计算机端口详解
一 摘要
端口是个网络应用中很重要的东西,相当于“门”了。
计算机“端口”是英文port的义译,可以认为是计算机与外界通讯交流的出口。其中硬件领域的端口又称接口,如:USB端口、串行端口等。软件领域的端口一般指网络中面向连接服务和无连接服务的通信协议端口,是一种抽象的软件结构,包括一些数据结构和I/O(基本输入输出)缓冲区。
可以先了解面向连接和无连接协议(Connection-Oriented
and Connectionless Protocols)
面向连接服务的主要特点有:面向连接服务要经过三个阶段:数据传数前,先建立连接,连接建立后再传输数据,数据传送完后,释放连接。面向连接服务,可确保数据传送的次序和传输的可靠性。
无连接服务的特点是:无连接服务只有传输数据阶段。消除了除数据通信外的其它开销。只要发送实体是活跃的,无须接收实体也是活跃的。它的优点是灵活方便、迅速,特别适合于传送少量零星的报文,但无连接服务不能防止报文的丢失、重复或失序。
区分“面向连接服务”和“无连接服务”的概念,特别简单、形象的例子是:打电话和写信。两个人如果要通电话,必须先建立连接——拨号,等待应答后才能相互传递信息,最后还要释放连接——挂电话。写信就没有那么复杂了,地址姓名填好以后直接往邮筒一扔,收信人就能收到。TCP/IP协议在网络层是无连接的(数据包只管往网上发,如何传输和到达以及是否到达由网络设备来管理)。而“端口”,是传输层的内容,是面向连接的。协议里面低于1024的端口都有确切的定义,它们对应着因特网上常见的一些服务。这些常见的服务可以划分为使用TCP端口(面向连接如打电话)和使用UDP端口(无连接如写信)两种。
网络中可以被命名和寻址的通信端口是操作系统的一种可分配资源。由网络OSI(开放系统互联参考模型,Open
System Interconnection Reference Model)七层协议可知,传输层与网络层最大的区别是传输层提供进程通信能力, 网络通信的最终地址不仅包括主机地址,还包括可描述进程的某种标识。所以TCP/IP协议提出的协议端口,可以认为是网络通信进程的一种标识符。
应用程序(调入内存运行后一般称为:进程)通过系统调用与某端口建立连接(binding,绑定)后,传输层传给该端口的数据都被相应的进程所接收,相应进程发给传输层的数据都从该端口输出。在TCP/IP协议的实现中,端口操作类似于一般的I/O操作,进程获取一个端口,相当于获取本地唯一的I/O文件,可以用一般的读写方式访问。
类似于文件描述符,每个端口都拥有一个叫端口号的整数描述符,用来区别不同的端口。由于TCP/IP传输层的TCP和UDP两个协议是两个完全独立的软件模块,因此各自的端口号也相互独立。如TCP有一个255号端口,UDP也可以有一个255号端口,两者并不冲突。
端口号有两种基本分配方式:第一种叫全局分配这是一种集中分配方式,由一个公认权威的中央机构根据用户需要进行统一分配,并将结果公布于众,第二种是本地分配,又称动态连接,即进程需要访问传输层服务时,向本地操作系统提出申请,操作系统返回本地唯一的端口号,进程再通过合适的系统调用,将自己和该端口连接起来(binding,绑定)。TCP/IP端口号的分配综合了以上两种方式,将端口号分为两部分,少量的作为保留端口,以全局方式分配给服务进程。每一个标准服务器都拥有一个全局公认的端口叫周知口,即使在不同的机器上,其端口号也相同。剩余的为自由端口,以本地方式进行分配。TCP和UDP规定,小于256的端口才能作为保留端口。
按端口号可分为3大类:
(1)公认端口(Well Known Ports):从0到1023,它们紧密绑定(binding)于一些服务。通常这些端口的通讯明确表明了某种服务的协议。例如:80端口实际上总是HTTP通讯。
(2)注册端口(Registered Ports):从1024到49151。它们松散地绑定于一些服务。也就是说有许多服务绑定于这些端口,这些端口同样用于许多其它目的。例如:许多系统处理动态端口从1024左右开始。
(3)动态和/或私有端口(Dynamic and/or Private Ports):从49152到65535。理论上,不应为服务分配这些端口。实际上,机器通常从1024起分配动态端口。但也有例外:SUN的RPC端口从32768开始。
系统管理员可以“重定向”端口:
一种常见的技术是把一个端口重定向到另一个地址。例如默认的HTTP端口是80,不少人将它重定向到另一个端口,如8080。如果是这样改了,要访问本文就应改用这个地址http://wwd.3322.NET:8080/net/port.htm(当然,这仅仅是理论上的举例)。
实现重定向是为了隐藏公认的默认端口,降低受破坏率。这样如果有人要对一个公认的默认端口进行攻击则必须先进行端口扫描。大多数端口重定向与原端口有相似之处,例如多数HTTP端口由80变化而来:81,88,8000,8080,8888。同样POP的端口原来在110,也常被重定向到1100。也有不少情况是选取统计上有特别意义的数,象1234,23456,34567等。许多人有其它原因选择奇怪的数,42,69,666,31337。近来,越来越多的远程控制木马( Remote Access Trojans, RATs
)采用相同的默认端口。如NetBus的默认端口是12345。Blake R. Swopes指出使用重定向端口还有一个原因,在UNIX系统上,如果你想侦听1024以下的端口需要有root权限。如果你没有root权限而又想开web服务,你就需要将其安装在较高的端口。此外,一些ISP的防火墙将阻挡低端口的通讯,这样的话即使你拥有整个机器你还是得重定向端口。
二 什么是端口
在 Internet上,各主机间通过TCP/TP协议发送和接收数据报,各个数据报根据其目的主机的ip地址来进行互联网络中的路由选择。可见,把数据报顺 利的传送到目的主机是没有问题的。问题出在哪里呢?我们知道大多数操作系统都支持多程序(进程)同时运行,那么目的主机应该把接收到的数据报传送给众多同
时运行的进程中的哪一个呢?显然这个问题有待解决,端口机制便由此被引入进来。
本地操作系统会给那些有需求的进程分配协议端口 (protocal port,即我们常说的端口),每个协议端口由一个正整数标识,如:80,139,445,等等。当目的主机接收到数据报后,将根据报文首部的目的端口 号,把数据发送到相应端口,而与此端口相对应的那个进程将会领取数据并等待下一组数据的到来。说到这里,端口的概念似乎仍然抽象,那么继续跟我来,别走 开。
端口其实就是队,操作系统为各个进程分配了不同的队,数据报按照目的端口被推入相应的队中,等待被进程取用,在极特殊的情况下,这个队也是有可能溢出的,不过操作系统允许各进程指定和调整自己的队的大小。
不光接受数据报的进程需要开启它自己的端口,发送数据报的进程也需要开启端口,这样,数据报中将会标识有源端口,以便接受方能顺利的回传数据报到这个端口。
三 端口的分类
在Internet上,按照协议类型分类,端口被分为TCP端口和UDP端口两类,虽然他们都用正整数标识,但这并不会引起歧义,比如TCP的80端口和UDP的80端口,因为数据报在标明端口的同时,还将标明端口的类型。
从端口的分配来看,端口被分为固定端口和动态端口两大类(一些教程还将极少被用到的高端口划分为第三类:私有端口):
固定端口(0-1023):
使用集中式管理机制,即服从一个管理机构对端口的指派,这个机构负责发布这些指派。由于这些端口紧绑于一些服务,所以我们会经常扫描这些端口来判断对方 是否开启了这些服务,如TCP的21(ftp),80(http),139(netbios),UDP的7(echo),69(tftp)等等一些大家熟 知的端口;
动态端口(1024-49151):
这些端口并不被固定捆绑某一服务,操作系统将这些端口动态的分配给各个进程, 同一进程两次分配有可能分配到不同的端口。不过一些应用程序并不愿意使用操作系统分配的动态端口,他们有其自己的‘商标性’端口,如oicq客户端的 4000端口,木马冰河的7626端口等都是固定而出名的。
四 端口在入侵中的作用
有人曾经把服务器比作房子,而把端口比作通向不同房间(服务)的门,如果不考虑细节的话,这是一个不错的比喻。入侵者要占领这间房子,势必要破门而入(物理入侵另说),那么对于入侵者来说,了解房子开了几扇门,都是什么样的门,门后面有什么东西就显得至关重要。
入侵者通常会用扫描器对目标主机的端口进行扫描,以确定哪些端口是开放的,从开放的端口,入侵者可以知道目标主机大致提供了哪些服务,进而猜测可能存在 的漏洞,因此对端口的扫描可以帮助我们更好的了解目标主机,而对于管理员,扫描本机的开放端口也是做好安全防范的第一步。
五 端口的相关工具
1 netstat -an
的确,这并不是一个工具,但他是查看自己所开放端口的最方便方法,在cmd中输入这个命令就可以了。如下:
C:/>netstat -an
Active Connections
Proto Local Address Foreign Address State
TCP 0.0.0.0:135 0.0.0.0:0 LISTENING
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1025 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1026 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1028 0.0.0.0:0 LISTENING
TCP 0.0.0.0:3372 0.0.0.0:0 LISTENING
UDP 0.0.0.0:135 *:*
UDP 0.0.0.0:445 *:*
UDP 0.0.0.0:1027 *:*
UDP 127.0.0.1:1029 *:*
UDP 127.0.0.1:1030 *:*
这是我没上网的时候机器所开的端口,两个135和445是固定端口,其余几个都是动态端口。
2 fport.exe和mport.exe
这也是两个命令行下查看本地机器开放端口的小程序,其实与netstat -an这个命令大同小异,只不过它能够显示打开端口的进程,信息更多一些而已,如果你怀疑自己的奇怪端口可能是木马,那就用他们查查吧。
3 activeport.exe(也称aports.exe)
还是用来查看本地机器开放端口的东东,除了具有上面两个程序的全部功能外,他还有两个更吸引人之处:图形界面以及可以关闭端口。这对菜鸟来说是个绝对好用的东西,推荐使用喔。
4 superscan3.0
它的大名你不会没听说过吧,纯端口扫描类软件中的NO.1,速度快而且可以指定扫描的端口,不多说了,绝对必备工具。
六 保护好自己的端口
刚接触网络的朋友一般都对自己的端口很敏感,总怕自己的电脑开放了过多端口,更怕其中就有后门程序的端口,但由于对端口不是很熟悉,所以也没有解决办法,上起网来提心吊胆。其实保护自己的端口并不是那么难,只要做好下面几点就行了:
1) 查看:经常用命令或软件查看本地所开放的端口,看是否有可疑端口;
2) 判断:如果开放端口中有你不熟悉的,应该马上查找端口大全或木马常见端口等资料(网上多的很),看看里面对你那个可疑端口的作用描述,或者通过软件查看开启此端口的进程来进行判断;
3) 关闭:如果真是木马端口或者资料中没有这个端口的描述,那么应该关闭此端口,你可以用防火墙来屏蔽此端口,也可以用本地连接-TCP/IP-高级-选项-TCP/IP筛选,启用筛选机制来筛选端口;
注意:判断时候要慎重,因为一些动态分配的端口也容易引起你多余的怀疑,这类端口一般比较低,且连续。还有,一些狡猾的后门软件,他们会借用80等一些常见端口来进行通信(穿透了防火墙),令人防不胜防,因此不轻易运行陌生程序才是关键。
常见端口表汇总
1 tcpmux TCP Port Service Multiplexer 传输控制协议端口服务多路开关选择器 2 compressnet Management Utility compressnet 管理实用程序 3 compressnet Compression Process 压缩进程 5 rje Remote Job Entry 远程作业登录 7 echo Echo 回显 9 discard Discard 丢弃 11 systat Active Users 在线用户 13 daytime Daytime 时间 17 qotd Quote of the Day 每日引用 18 msp Message Send Protocol 消息发送协议 19 chargen Character Generator 字符发生器 20 ftp-data File Transfer [Default Data] 文件传输协议(默认数据口) 21 ftp File Transfer [Control] 文件传输协议(控制) 22 ssh SSH Remote Login Protocol SSH远程登录协议 23 telnet Telnet 终端仿真协议 24 ? any private mail system 预留给个人用邮件系统 25 smtp Simple Mail Transfer 简单邮件发送协议 27 nsw-fe NSW User System FE NSW 用户系统现场工程师 29 msg-icp MSG ICP MSG ICP 31 msg-auth MSG Authentication MSG验证 33 dsp Display Support Protocol 显示支持协议 35 ? any private printer server 预留给个人打印机服务 37 time Time 时间 38 rap Route Access Protocol 路由访问协议 39 rlp Resource Location Protocol 资源定位协议 41 graphics Graphics 图形 42 nameserver WINS Host Name Server WINS 主机名服务 43 nicname Who Is "绰号" who is服务 44 mpm-flags MPM FLAGS Protocol MPM(消息处理模块)标志协议 45 mpm Message Processing Module [recv] 消息处理模块 46 mpm-snd MPM [default send] 消息处理模块(默认发送口) 47 ni-ftp NI FTP NI FTP 48 auditd Digital Audit Daemon 数码音频后台服务 49 tacacs Login Host Protocol (TACACS) TACACS登录主机协议 50 re-mail-ck Remote Mail Checking Protocol 远程邮件检查协议 51 la-maint IMP Logical Address Maintenance IMP(接口信息处理机)逻辑地址维护 52 xns-time XNS Time Protocol 施乐网络服务系统时间协议 53 domain Domain Name Server 域名服务器 54 xns-ch XNS Clearinghouse 施乐网络服务系统票据交换 55 isi-gl ISI Graphics Language ISI图形语言 56 xns-auth XNS Authentication 施乐网络服务系统验证 57 ? any private terminal access 预留个人用终端访问 58 xns-mail XNS Mail 施乐网络服务系统邮件 59 ? any private file service 预留个人文件服务 60 ? Unassigned 未定义 61 ni-mail NI MAIL NI邮件? 62 acas ACA Services 异步通讯适配器服务 63 whois+ whois+ WHOIS+ 64 covia Communications Integrator (CI) 通讯接口 65 tacacs-ds TACACS-Database Service TACACS数据库服务 66 sql*net Oracle SQL*NET Oracle SQL*NET 67 bootps Bootstrap Protocol Server 引导程序协议服务端 68 bootpc Bootstrap Protocol Client 引导程序协议客户端 69 tftp Trivial File Transfer 小型文件传输协议 70 gopher Gopher 信息检索协议 71 netrjs-1 Remote Job Service 远程作业服务 72 netrjs-2 Remote Job Service 远程作业服务 73 netrjs-3 Remote Job Service 远程作业服务 74 netrjs-4 Remote Job Service 远程作业服务 75 ? any private dial out service 预留给个人拨出服务 76 deos Distributed External Object Store 分布式外部对象存储 77 ? any private RJE service 预留给个人远程作业输入服务 78 vettcp vettcp 修正TCP? 79 finger Finger FINGER(查询远程主机在线用户等信息) 80 http World Wide Web HTTP 全球信息网超文本传输协议 81 hosts2-ns HOSTS2 Name Server HOST2名称服务 82 xfer XFER Utility 传输实用程序 83 mit-ml-dev MIT ML Device 模块化智能终端ML设备 84 ctf Common Trace Facility 公用追踪设备 85 mit-ml-dev MIT ML Device 模块化智能终端ML设备 86 mfcobol Micro Focus Cobol Micro Focus Cobol编程语言 87 ? any private terminal link 预留给个人终端连接 88 kerberos Kerberos Kerberros安全认证系统 89 su-mit-tg SU/MIT Telnet Gateway SU/MIT终端仿真网关 90 dnsix DNSIX Securit Attribute Token Map DNSIX 安全属性标记图 91 mit-dov MIT Dover Spooler MIT Dover假脱机 92 npp Network Printing Protocol 网络打印协议 93 dcp Device Control Protocol 设备控制协议 94 objcall Tivoli Object Dispatcher Tivoli对象调度 95 supdup SUPDUP 96 dixie DIXIE Protocol Specification DIXIE协议规范 97 Swift-rvf Swift Remote Virtural File Protocol 快速远程虚拟文件协议 98 tacnews TAC News TAC(东京大学自动计算机?)新闻协议 99 metagram Metagram Relay 101/tcp hostname NIC Host Name Server 102/tcp iso-tsap ISO-TSAP Class 0 103/tcp gppitnp Genesis Point-to-Point Trans Net 104/tcp acr-nema ACR-NEMA Digital Imag. & Comm. 300 105/tcp cso CCSO name server protocol 105/tcp csnet-ns Mailbox Name Nameserver 106/tcp 3com-tsmux 3COM-TSMUX 107/tcp rtelnet Remote Telnet Service 108/tcp snagas SNA Gateway Access Server 109/tcp pop2 Post Office Protocol - Version 2 110/tcp pop3 Post Office Protocol - Version 3 111/tcp sunrpc SUN Remote Procedure Call 112/tcp mcidas McIDAS Data Transmission Protocol 113/tcp ident 114/tcp audionews Audio News Multicast 115/tcp sftp Simple File Transfer Protocol 116/tcp ansanotify ANSA REX Notify 117/tcp uucp-path UUCP Path Service 118/tcp sqlserv SQL Services 119/tcp nntp Network News Transfer Protocol 120/tcp cfdptkt CFDPTKT 121/tcp erpc Encore Expedited Remote Pro.Call 122/tcp smakynet SMAKYNET 123/tcp ntp Network Time Protocol 124/tcp ansatrader ANSA REX Trader 125/tcp locus-map Locus PC-Interface Net Map Ser 126/tcp unitary Unisys Unitary Login 127/tcp locus-con Locus PC-Interface Conn Server 128/tcp gss-xlicen GSS X License Verification 129/tcp pwdgen Password Generator Protocol 130/tcp cisco-fna cisco FNATIVE 131/tcp cisco-tna cisco TNATIVE 132/tcp cisco-sys cisco SYSMAINT 133/tcp statsrv Statistics Service 134/tcp ingres-net INGRES-NET Service 135/tcp epmap DCE endpoint resolution 136/tcp profile PROFILE Naming System 137/tcp netbios-ns NETBIOS Name Service 138/tcp netbios-dgm NETBIOS Datagram Service 139/tcp netbios-ssn NETBIOS Session Service 140/tcp emfis-data EMFIS Data Service 141/tcp emfis-cntl EMFIS Control Service 142/tcp bl-idm Britton-Lee IDM 143/tcp imap Internet Message Access Protocol 144/tcp uma Universal Management Architecture 145/tcp uaac UAAC Protocol 146/tcp iso-tp0 ISO-IP0 147/tcp iso-ip ISO-IP 148/tcp jargon Jargon 149/tcp aed-512 AED 512 Emulation Service 150/tcp sql-net SQL-NET 151/tcp hems HEMS 152/tcp bftp Background File Transfer Program 153/tcp sgmp SGMP 154/tcp netsc-prod NETSC 155/tcp netsc-dev NETSC 156/tcp sqlsrv SQL Service 157/tcp knet-cmp KNET/VM Command/Message Protocol 158/tcp pcmail-srv PCMail Server 159/tcp nss-routing NSS-Routing 160/tcp sgmp-traps SGMP-TRAPS 161/tcp snmp SNMP 162/tcp snmptrap SNMPTRAP 163/tcp cmip-man CMIP/TCP Manager 164/tcp cmip-agent CMIP/TCP Agent 165/tcp xns-courier Xerox 166/tcp s-net Sirius Systems 167/tcp namp NAMP 168/tcp rsvd RSVD 169/tcp send SEND 170/tcp print-srv Network PostScript 171/tcp multiplex Network Innovations Multiplex 172/tcp cl/1 Network Innovations CL/1 173/tcp xyplex-mux Xyplex 174/tcp mailq MAILQ 175/tcp vmnet VMNET 176/tcp genrad-mux GENRAD-MUX 177/tcp xdmcp X Display Manager Control Protocol 178/tcp nextstep NextStep Window Server 179/tcp bgp Border Gateway Protocol 180/tcp ris Intergraph 181/tcp unify Unify 182/tcp audit Unisys Audit SITP 183/tcp ocbinder OCBinder 184/tcp ocserver OCServer 185/tcp remote-kis Remote-KIS 186/tcp kis KIS Protocol 187/tcp aci Application Communication Interface 188/tcp mumps Plus Five‘s MUMPS 189/tcp qft Queued File Transport 190/tcp gacp Gateway Access Control Protocol 191/tcp prospero Prospero Directory Service 192/tcp osu-nms OSU Network Monitoring System 193/tcp srmp Spider Remote Monitoring Protocol 194/tcp irc Internet Relay Chat Protocol 195/tcp dn6-nlm-aud DNSIX Network Level Module Audit 196/tcp dn6-smm-red DNSIX Session Mgt Module Audit Redir 197/tcp dls Directory Location Service 198/tcp dls-mon Directory Location Service Monitor 199/tcp smux SMUX 200/tcp src IBM System Resource Controller 201/tcp at-rtmp AppleTalk Routing Maintenance 202/tcp at-nbp AppleTalk Name Binding 203/tcp at-3 AppleTalk Unused 204/tcp at-echo AppleTalk Echo 205/tcp at-5 AppleTalk Unused 206/tcp at-zis AppleTalk Zone Information 207/tcp at-7 AppleTalk Unused 208/tcp at-8 AppleTalk Unused 209/tcp qmtp The Quick Mail Transfer Protocol 210/tcp z39.50 ANSI Z39.50 211/tcp 914c/g Texas Instruments 914C/G Terminal 212/tcp anet ATEXSSTR 214/tcp vmpwscs VM PWSCS 215/tcp softpc Insignia Solutions 216/tcp CAIlic Computer Associates Int‘l License Server 217/tcp dbase dBASE Unix 218/tcp mpp Netix Message Posting Protocol 219/tcp uarps Unisys ARPs 220/tcp imap3 Interactive Mail Access Protocol v3 221/tcp fln-spx Berkeley rlogind with SPX auth 222/tcp rsh-spx Berkeley rshd with SPX auth 223/tcp cdc Certificate Distribution Center 242/tcp direct Direct 243/tcp sur-meas Survey Measurement 244/tcp dayna Dayna 245/tcp link LINK 246/tcp dsp3270 Display Systems Protocol 247/tcp subntbcst_tftp SUBNTBCST_TFTP 248/tcp bhfhs bhfhs 256/tcp rap RAP 257/tcp set Secure Electronic Transaction 258/tcp yak-chat Yak Winsock Personal Chat 259/tcp esro-gen Efficient Short Remote Operations 260/tcp openport Openport 263/tcp hdap HDAP 264/tcp bgmp BGMP 280/tcp http-mgmt http-mgmt 309/tcp entrusttime EntrustTime 310/tcp bhmds bhmds 312/tcp vslmp VSLMP 315/tcp dpsi DPSI 316/tcp decauth decAuth 317/tcp zannet Zannet 321/tcp pip PIP 344/tcp pdap Prospero Data Access Protocol 345/tcp pawserv Perf Analysis Workbench 346/tcp zserv Zebra server 347/tcp fatserv Fatmen Server 348/tcp csi-sgwp Cabletron Management Protocol 349/tcp mftp mftp 351/tcp matip-type-b MATIP Type B 351/tcp bhoetty bhoetty (added 5/21/97) 353/tcp ndsauth NDSAUTH 354/tcp bh611 bh611 357/tcp bhevent bhevent 362/tcp srssend SRS Send 365/tcp dtk DTK 366/tcp odmr ODMR 368/tcp qbikgdp QbikGDP 371/tcp clearcase Clearcase 372/tcp ulistproc ListProcessor 373/tcp legent-1 Legent Corporation 374/tcp legent-2 374/tcp legent-2 Legent Corporation 375/tcp hassle Hassle 376/tcp nip Amiga Envoy Network Inquiry Proto 377/tcp tnETOS NEC Corporation 378/tcp dsETOS NEC Corporation 379/tcp is99c TIA/EIA/IS-99 modem client 380/tcp is99s TIA/EIA/IS-99 modem server 381/tcp hp-collector hp performance data collector 383/tcp hp-alarm-mgr hp performance data alarm manager 384/tcp arns A Remote Network Server System 385/tcp ibm-app IBM Application 386/tcp asa ASA Message Router Object Def. 387/tcp aurp Appletalk Update-Based Routing Pro. 388/tcp unidata-ldm Unidata LDM Version 4 389/tcp ldap Lightweight Directory Access Protocol 390/tcp uis UIS 391/tcp synotics-relay SynOptics SNMP Relay Port 393/tcp dis Data Interpretation System 394/tcp embl-ndt EMBL Nucleic Data Transfer 395/tcp netcp NETscout Control Protocol 396/tcp netware-ip Novell Netware over IP 397/tcp mptn Multi Protocol Trans. Net. 398/tcp kryptolan Kryptolan 399/tcp iso-tsap-c2 ISO Transport Class 2 Non-Control over TCP 400/tcp work-sol Workstation Solutions 401/tcp ups Uninterruptible Power Supply 402/tcp genie Genie Protocol 403/tcp decap decap 404/tcp nced nced 405/tcp ncld ncld 406/tcp imsp Interactive Mail Support Protocol 407/tcp timbuktu Timbuktu 408/tcp prm-sm Prospero Resource Manager Sys. Man. 409/tcp prm-nm Prospero Resource Manager Node Man. 410/tcp decladebug DECLadebug Remote Debug Protocol 411/tcp rmt Remote MT Protocol 412/tcp synoptics-trap Trap Convention Port 413/tcp smsp SMSP 414/tcp infoseek InfoSeek 415/tcp bnet BNet 416/tcp silverplatter Silverplatter 417/tcp onmux Onmux 418/tcp hyper-g Hyper-G 419/tcp ariel1 Ariel 420/tcp smpte SMPTE 421/tcp ariel2 Ariel 422/tcp ariel3 Ariel 423/tcp opc-job-start IBM Operations Planning and Control Start 424/tcp opc-job-track IBM Operations Planning and Control Track 425/tcp icad-el ICAD 426/tcp smartsdp smartsdp 427/tcp svrloc Server Location 428/tcp ocs_cmu OCS_CMU 429/tcp ocs_amu OCS_AMU 430/tcp utmpsd UTMPSD 431/tcp utmpcd UTMPCD 432/tcp iasd IASD 433/tcp nnsp NNSP 434/tcp mobileip-agent MobileIP-Agent 435/tcp mobilip-mn MobilIP-MN 436/tcp dna-cml DNA-CML 437/tcp comscm comscm 438/tcp dsfgw dsfgw 439/tcp dasp dasp Thomas Obermair 440/tcp sgcp sgcp 441/tcp decvms-sysmgt decvms-sysmgt 442/tcp cvc_hostd cvc_hostd 443/tcp https http protocol over TLS/SSL 444/tcp snpp Simple Network Paging Protocol 445/tcp microsoft-ds Microsoft-DS 446/tcp ddm-rdb DDM-RDB 447/tcp ddm-dfm DDM-RFM 448/tcp ddm-ssl DDM-SSL 449/tcp as-servermap AS Server Mapper 450/tcp tserver TServer 451/tcp sfs-smp-net Cray Network Semaphore server 453/tcp creativeserver CreativeServer 454/tcp contentserver ContentServer 455/tcp creativepartnr CreativePartnr 456/tcp macon-tcp macon-tcp 457/tcp scohelp scohelp 458/tcp appleqtc apple quick time 459/tcp ampr-rcmd ampr-rcmd 460/tcp skronk skronk 461/tcp datasurfsrv DataRampSrv 462/tcp datasurfsrvsec DataRampSrvSec 463/tcp alpes alpes 464/tcp kpasswd kpasswd 465/tcp smtps smtp protocol over TLS/SSL (was ssmtp) 466/tcp digital-vrc digital-vrc 467/tcp mylex-mapd mylex-mapd 468/tcp photuris proturis 469/tcp rcp Radio Control Protocol 470/tcp scx-proxy scx-proxy 471/tcp mondex Mondex 472/tcp ljk-login ljk-login 473/tcp hybrid-pop hybrid-pop 474/tcp tn-tl-w1 tn-tl-w1 475/tcp tcpnethaspsrv tcpnethaspsrv 476/tcp tn-tl-fd1 tn-tl-fd1 477/tcp ss7ns ss7ns 478/tcp spsc spsc 479/tcp iafserver iafserver 480/tcp iafdbase iafdbase 481/tcp ph Ph service 482/tcp bgs-nsi bgs-nsi 483/tcp ulpnet ulpnet 484/tcp integra-sme Integra Software Management Environment 485/tcp powerburst Air Soft Power Burst 486/tcp avian avian 487/tcp saft saft Simple Asynchronous File Transfer 488/tcp gss-http gss-http 489/tcp nest-protocol nest-protocol 490/tcp micom-pfs micom-pfs 491/tcp Go-login go-login 492/tcp ticf-1 Transport Independent Convergence for FNA 493/tcp ticf-2 Transport Independent Convergence for FNA 494/tcp pov-ray POV-Ray 495/tcp intecourier intecourier 496/tcp pim-rp-disc PIM-RP-DISC 497/tcp dantz dantz 498/tcp siam siam 499/tcp iso-ill ISO ILL Protocol 500/tcp isakmp isakmp 501/tcp stmf STMF 502/tcp asa-appl-proto asa-appl-proto 503/tcp intrinsa Intrinsa 504/tcp citadel citadel 505/tcp mailbox-lm mailbox-lm 506/tcp ohimsrv ohimsrv 507/tcp crs crs 508/tcp xvttp xvttp 509/tcp snare snare 510/tcp fcp FirstClass Protocol 511/tcp passgo PassGo 512/tcp exec remote process execution; 513/tcp login remote login a la telnet; 514/tcp shell cmd 515/tcp printer spooler 516/tcp videotex videotex 517/tcp talk like tenex link, but across 518/tcp ntalk 519/tcp utime unixtime 520/tcp efs extended file name server 521/tcp ripng ripng 522/tcp ulp ULP 523/tcp ibm-db2 IBM-DB2 524/tcp ncp NCP 525/tcp timed timeserver 526/tcp tempo newdate 527/tcp stx Stock IXChange 528/tcp custix Customer IXChange 529/tcp irc-serv IRC-SERV 530/tcp courier rpc 531/tcp conference chat 532/tcp netnews readnews 533/tcp netwall for emergency broadcasts 534/tcp mm-admin MegaMedia Admin 535/tcp iiop iiop 536/tcp opalis-rdv opalis-rdv 537/tcp nmsp Networked Media Streaming Protocol 538/tcp gdomap gdomap 539/tcp apertus-ldp Apertus Technologies Load Determination 540/tcp uucp uucpd 541/tcp uucp-rlogin uucp-rlogin 542/tcp commerce commerce 543/tcp klogin 544/tcp kshell krcmd 545/tcp appleqtcsrvr appleqtcsrvr 546/tcp dhcpv6-client DHCPv6 Client 547/tcp dhcpv6-server DHCPv6 Server 548/tcp afpovertcp AFP over TCP 549/tcp idfp IDFP 550/tcp new-rwho new-who 551/tcp cybercash cybercash 552/tcp deviceshare deviceshare 553/tcp pirp pirp 554/tcp rtsp Real Time Stream Control Protocol 555/tcp dsf 556/tcp remotefs rfs server 557/tcp openvms-sysipc openvms-sysipc 558/tcp sdnskmp SDNSKMP 559/tcp teedtap TEEDTAP 560/tcp rmonitor rmonitord 561/tcp monitor 562/tcp chshell chcmd 563/tcp nntps nntp protocol over TLS/SSL (was snntp) 564/tcp 9pfs plan 9 file service 565/tcp whoami whoami 566/tcp streettalk streettalk 567/tcp banyan-rpc banyan-rpc 568/tcp ms-shuttle microsoft shuttle 569/tcp ms-rome microsoft rome 570/tcp meter demon 571/tcp meter udemon 572/tcp sonar sonar 573/tcp banyan-vip banyan-vip 574/tcp ftp-agent FTP Software Agent System 575/tcp vemmi VEMMI 576/tcp ipcd ipcd 577/tcp vnas vnas 578/tcp ipdd ipdd 579/tcp decbsrv decbsrv 581/tcp bdp Bundle Discovery Protocol 588/tcp cal CAL 589/tcp eyelink EyeLink 590/tcp tns-cml TNS CML 593/tcp http-rpc-epmap HTTP RPC Ep Map 594/tcp tpip TPIP 596/tcp smsd SMSD 599/tcp acp Aeolon Core Protocol 600/tcp ipcserver Sun IPC server 606/tcp urm Cray Unified Resource Manager 607/tcp nqs nqs 608/tcp sift-uft Sender-Initiated/Unsolicited File Transfer 609/tcp npmp-trap npmp-trap 610/tcp npmp-local npmp-local 611/tcp npmp-gui npmp-gui 613/tcp hmmp-op HMMP Operation 620/tcp sco-websrvrmgr SCO WebServer Manager 621/tcp escp-ip ESCP 625/tcp dec_dlm DEC DLM 626/tcp asia ASIA 628/tcp qmqp QMQP 630/tcp rda RDA 631/tcp ipp IPP (Internet Printing Protocol) 632/tcp bmpp bmpp 634/tcp ginad ginad 635/tcp rlzdbase RLZ DBase 636/tcp ldaps ldap protocol over TLS/SSL (was sldap) 637/tcp lanserver lanserver 639/tcp msdp MSDP 666/tcp doom doom Id Software 667/tcp disclose campaign contribution disclosures - SDR Technologies 668/tcp mecomm MeComm 669/tcp meregister MeRegister 670/tcp vacdsm-sws VACDSM-SWS 671/tcp vacdsm-app VACDSM-APP 672/tcp vpps-qua VPPS-QUA 673/tcp cimplex CIMPLEX 674/tcp acap ACAP 675/tcp dctp DCTP 704/tcp elcsd errlog copy/server daemon 705/tcp agentx AgentX 709/tcp entrust-kmsh Entrust Key Management Service Handler 710/tcp entrust-ash Entrust Administration Service Handler 729/tcp netviewdm1 IBM NetView DM/6000 Server/Client 730/tcp netviewdm2 IBM NetView DM/6000 send/tcp 731/tcp netviewdm3 IBM NetView DM/6000 receive/tcp 741/tcp netgw netGW 742/tcp netrcs Network based Rev. Cont. Sys. 744/tcp flexlm Flexible License Manager 747/tcp fujitsu-dev Fujitsu Device Control 748/tcp ris-cm Russell Info Sci Calendar Manager 749/tcp kerberos-adm kerberos administration 750/tcp rfile 751/tcp pump 752/tcp qrh 753/tcp rrh 754/tcp tell send 758/tcp nlogin 759/tcp con 760/tcp ns 761/tcp rxe 762/tcp quotad 763/tcp cycleserv 764/tcp omserv 765/tcp webster 769/tcp vid 770/tcp cadlock 771/tcp rtip 772/tcp cycleserv2 773/tcp submit 774/tcp rpasswd 776/tcp wpages 780/tcp wpgs 786/tcp concert Concert 787/tcp qsc QSC 801/tcp device 873/tcp rsync rsync 886/tcp iclcnet-locate ICL coNETion locate server 887/tcp iclcnet_svinfo ICL coNETion server info 888/tcp accessbuilder AccessBuilder 900/tcp omginitialrefs OMG Initial Refs 911/tcp xact-backup xact-backup 990/tcp ftps ftp protocol, control, over TLS/SSL 991/tcp nas Netnews Administration System 992/tcp telnets telnet protocol over TLS/SSL 993/tcp imaps imap4 protocol over TLS/SSL 994/tcp ircs irc protocol over TLS/SSL 995/tcp pop3s pop3 protocol over TLS/SSL (was spop3) 996/tcp vsinet vsinet 997/tcp maitrd 998/tcp busboy 999/tcp garcon 1000/tcp cadlock 1010/tcp surf surf 1023/tcp Reserved Reserved 1030/tcp iad1 BBN IAD 1031/tcp iad2 BBN IAD 1032/tcp iad3 BBN IAD 1047/tcp neod1 Sun‘s NEO Object Request Broker 1048/tcp neod2 Sun‘s NEO Object Request Broker 1058/tcp nim nim 1059/tcp nimreg nimreg 1067/tcp instl_boots Installation Bootstrap Proto. Serv. 1068/tcp instl_bootc Installation Bootstrap Proto. Cli. 1080/tcp socks Socks 1083/tcp ansoft-lm-1 Anasoft License Manager 1084/tcp ansoft-lm-2 Anasoft License Manager 1123/tcp murray Murray 1155/tcp nfa Network File Access 1212/tcp lupa lupa 1222/tcp nerv SNI R&D network 1239/tcp nmsd NMSD 1248/tcp hermes 1313/tcp bmc_patroldb BMC_PATROLDB 1314/tcp pdps Photoscript Distributed Printing System 1321/tcp pip PIP 1345/tcp vpjp VPJP 1346/tcp alta-ana-lm Alta Analytics License Manager 1347/tcp bbn-mmc multi media conferencing 1348/tcp bbn-mmx multi media conferencing 1349/tcp sbook Registration Network Protocol 1350/tcp editbench Registration Network Protocol 1352/tcp lotusnote Lotus Note 1353/tcp relief Relief Consulting 1354/tcp rightbrain RightBrain Software 1355/tcp intuitive-edge Intuitive Edge 1356/tcp cuillamartin CuillaMartin Company 1357/tcp pegboard Electronic PegBoard 1358/tcp connlcli CONNLCLI 1359/tcp ftsrv FTSRV 1360/tcp mimer MIMER 1361/tcp linx LinX 1362/tcp timeflies TimeFlies 1363/tcp ndm-requester Network DataMover Requester 1364/tcp ndm-server Network DataMover Server 1365/tcp adapt-sna Network Software Associates 1366/tcp netware-csp Novell NetWare Comm Service Platform 1367/tcp dcs DCS 1368/tcp screencast ScreenCast 1369/tcp gv-us GlobalView to Unix Shell 1370/tcp us-gv Unix Shell to GlobalView 1371/tcp fc-cli Fujitsu Config Protocol 1372/tcp fc-ser Fujitsu Config Protocol 1373/tcp chromagrafx Chromagrafx 1374/tcp molly EPI Software Systems 1375/tcp bytex Bytex 1376/tcp ibm-pps IBM Person to Person Software 1377/tcp cichlid Cichlid License Manager 1378/tcp elan Elan License Manager 1379/tcp dbreporter Integrity Solutions 1380/tcp telesis-licman Telesis Network License Manager 1381/tcp apple-licman Apple Network License Manager 1382/tcp udt_os 1383/tcp gwha GW Hannaway Network License Manager 1384/tcp os-licman Objective Solutions License Manager 1385/tcp atex_elmd Atex Publishing License Manager 1386/tcp checksum CheckSum License Manager 1387/tcp cadsi-lm Computer Aided Design Software Inc LM 1388/tcp objective-dbc Objective Solutions DataBase Cache 1389/tcp iclpv-dm Document Manager 1390/tcp iclpv-sc Storage Controller 1391/tcp iclpv-sas Storage Access Server 1392/tcp iclpv-pm Print Manager 1393/tcp iclpv-nls Network Log Server 1394/tcp iclpv-nlc Network Log Client 1395/tcp iclpv-wsm PC Workstation Manager software 1396/tcp dvl-activemail DVL Active Mail 1399/tcp cadkey-licman Cadkey License Manager 1400/tcp cadkey-tablet Cadkey Tablet Daemon 1402/tcp prm-sm-np Prospero Resource Manager 1403/tcp prm-nm-np Prospero Resource Manager 1404/tcp igi-lm Infinite Graphics License Manager 1405/tcp ibm-res IBM Remote Execution Starter 1406/tcp netlabs-lm NetLabs License Manager 1407/tcp dbsa-lm DBSA License Manager 1408/tcp sophia-lm Sophia License Manager 1409/tcp here-lm Here License Manager 1410/tcp hiq HiQ License Manager 1411/tcp af AudioFile 1412/tcp innosys InnoSys 1413/tcp innosys-acl Innosys-ACL 1414/tcp ibm-mqseries IBM MQSeries 1415/tcp dbstar DBStar 1416/tcp novell-lu6.2 Novell LU6.2 1417/tcp timbuktu-srv1 Timbuktu Service 1 Port 1418/tcp timbuktu-srv2 Timbuktu Service 2 Port 1419/tcp timbuktu-srv3 Timbuktu Service 3 Port 1420/tcp timbuktu-srv4 Timbuktu Service 4 Port 1421/tcp gandalf-lm Gandalf License Manager 1422/tcp autodesk-lm Autodesk License Manager 1423/tcp essbase Essbase Arbor Software 1424/tcp hybrid Hybrid Encryption Protocol 1425/tcp zion-lm Zion Software License Manager 1426/tcp sais Satellite-data Acquisition System 1 1427/tcp mloadd mloadd monitoring tool 1428/tcp informatik-lm Informatik License Manager 1429/tcp nms Hypercom NMS 1430/tcp tpdu Hypercom TPDU 1431/tcp rgtp Reverse Gossip Transport 1432/tcp blueberry-lm Blueberry Software License Manager 1433/tcp ms-sql-s Microsoft-SQL-Server 1434/tcp ms-sql-m Microsoft-SQL-Monitor 1435/tcp ibm-cics IBM CICS 1436/tcp saism Satellite-data Acquisition System 2 1437/tcp tabula Tabula 1438/tcp eicon-server Eicon Security Agent/Server 1439/tcp eicon-x25 Eicon X25/SNA Gateway 1440/tcp eicon-slp Eicon Service Location Protocol 1441/tcp cadis-1 Cadis License Management 1442/tcp cadis-2 Cadis License Management 1443/tcp ies-lm Integrated Engineering Software 1444/tcp marcam-lm Marcam License Management 1445/tcp proxima-lm Proxima License Manager 1446/tcp ora-lm Optical Research Associates License Manager 1447/tcp apri-lm Applied Parallel Research LM 1448/tcp oc-lm OpenConnect License Manager 1449/tcp peport PEport 1450/tcp dwf Tandem Distributed Workbench Facility 1451/tcp infoman IBM Information Management 1452/tcp gtegsc-lm GTE Government Systems License Man 1453/tcp genie-lm Genie License Manager 1454/tcp interhdl_elmd interHDL License Manager 1455/tcp esl-lm ESL License Manager 1456/tcp dca DCA 1457/tcp valisys-lm Valisys License Manager 1458/tcp nrcabq-lm Nichols Research Corp. 1459/tcp proshare1 Proshare Notebook Application 1460/tcp proshare2 Proshare Notebook Application 1461/tcp ibm_wrless_lan IBM Wireless LAN 1462/tcp world-lm World License Manager 1463/tcp nucleus Nucleus 1464/tcp msl_lmd MSL License Manager 1465/tcp pipes Pipes Platform 1466/tcp oceansoft-lm Ocean Software License Manager 1467/tcp csdmbase CSDMBASE 1468/tcp csdm CSDM 1469/tcp aal-lm Active Analysis Limited License Manager 1470/tcp uaiact Universal Analytics 1471/tcp csdmbase csdmbase 1472/tcp csdm csdm 1473/tcp openmath OpenMath 1474/tcp telefinder Telefinder 1475/tcp taligent-lm Taligent License Manager 1476/tcp clvm-cfg clvm-cfg 1477/tcp ms-sna-server ms-sna-server 1478/tcp ms-sna-base ms-sna-base 1479/tcp dberegister dberegister 1480/tcp pacerforum PacerForum 1481/tcp airs AIRS 1482/tcp miteksys-lm Miteksys License Manager 1483/tcp afs AFS License Manager 1484/tcp confluent Confluent License Manager 1485/tcp lansource LANSource 1486/tcp nms_topo_serv nms_topo_serv 1487/tcp localinfosrvr LocalInfoSrvr 1488/tcp docstor DocStor 1489/tcp dmdocbroker dmdocbroker 1490/tcp insitu-conf insitu-conf 1491/tcp anynetgateway anynetgateway 1492/tcp stone-design-1 stone-design-1 1493/tcp netmap_lm netmap_lm 1494/tcp ica ica 1495/tcp cvc cvc 1496/tcp liberty-lm liberty-lm 1497/tcp rfx-lm rfx-lm 1498/tcp sybase-sqlany Sybase SQL Any 1499/tcp fhc Federico Heinz Consultora 1500/tcp vlsi-lm VLSI License Manager 1501/tcp saiscm Satellite-data Acquisition System 3 1502/tcp shivadiscovery Shiva 1503/tcp imtc-mcs Databeam 1504/tcp evb-elm EVB Software Engineering License Manager 1505/tcp funkproxy Funk Software, Inc. 1506/tcp utcd Universal Time daemon (utcd) 1507/tcp symplex symplex 1508/tcp diagmond diagmond 1509/tcp robcad-lm Robcad, Ltd. License Manager 1510/tcp mvx-lm Midland Valley Exploration Ltd. Lic. Man. 1511/tcp 3l-l1 3l-l1 1512/tcp wins Microsoft‘s Windows Internet Name Service 1513/tcp fujitsu-dtc Fujitsu Systems Business of America, Inc 1514/tcp fujitsu-dtcns Fujitsu Systems Business of America, Inc 1515/tcp ifor-protocol ifor-protocol 1516/tcp vpad Virtual Places Audio data 1517/tcp vpac Virtual Places Audio control 1518/tcp vpvd Virtual Places Video data 1519/tcp vpvc Virtual Places Video control 1520/tcp atm-zip-office atm zip office 1521/tcp ncube-lm nCube License Manager 1522/tcp ricardo-lm Ricardo North America License Manager 1523/tcp cichild-lm cichild 1525/tcp orasrv oracle 1525/tcp prospero-np Prospero Directory Service non-priv 1526/tcp pdap-np Prospero Data Access Prot non-priv 1527/tcp tlisrv oracle 1528/tcp mciautoreg micautoreg 1529/tcp coauthor oracle 1530/tcp rap-service rap-service 1531/tcp rap-listen rap-listen 1532/tcp miroconnect miroconnect 1533/tcp virtual-places Virtual Places Software 1534/tcp micromuse-lm micromuse-lm 1535/tcp ampr-info ampr-info 1536/tcp ampr-inter ampr-inter 1537/tcp sdsc-lm isi-lm 1538/tcp 3ds-lm 3ds-lm 1539/tcp intellistor-lm Intellistor License Manager 1540/tcp rds rds 1541/tcp rds2 rds2 1542/tcp gridgen-elmd gridgen-elmd 1543/tcp simba-cs simba-cs 1544/tcp aspeclmd aspeclmd 1545/tcp vistium-share vistium-share 1546/tcp abbaccuray abbaccuray 1547/tcp laplink laplink 1548/tcp axon-lm Axon License Manager 1549/tcp shivahose Shiva Hose 1550/tcp 3m-image-lm Image Storage license manager 3M Company 1551/tcp hecmtl-db HECMTL-DB 1552/tcp pciarray pciarray 1553/tcp sna-cs sna-cs 1554/tcp caci-lm CACI Products Company License Manager 1555/tcp livelan livelan 1556/tcp ashwin AshWin CI Tecnologies 1557/tcp arbortext-lm ArborText License Manager 1558/tcp xingmpeg xingmpeg 1559/tcp web2host web2host 1560/tcp asci-val asci-val 1561/tcp facilityview facilityview 1562/tcp pconnectmgr pconnectmgr 1563/tcp cadabra-lm Cadabra License Manager 1564/tcp pay-per-view Pay-Per-View 1565/tcp winddlb WinDD 1566/tcp corelvideo CORELVIDEO 1567/tcp jlicelmd jlicelmd 1568/tcp tsspmap tsspmap 1569/tcp ets ets 1570/tcp orbixd orbixd 1571/tcp rdb-dbs-disp Oracle Remote Data Base 1572/tcp chip-lm Chipcom License Manager 1573/tcp itscomm-ns itscomm-ns 1574/tcp mvel-lm mvel-lm 1575/tcp oraclenames oraclenames 1576/tcp moldflow-lm moldflow-lm 1577/tcp hypercube-lm hypercube-lm 1578/tcp jacobus-lm Jacobus License Manager 1579/tcp ioc-sea-lm ioc-sea-lm 1580/tcp tn-tl-r1 tn-tl-r1 1581/tcp mil-2045-47001 MIL-2045-47001 1582/tcp msims MSIMS 1583/tcp simbaexpress simbaexpress 1584/tcp tn-tl-fd2 tn-tl-fd2 1585/tcp intv intv 1586/tcp ibm-abtact ibm-abtact 1587/tcp pra_elmd pra_elmd 1588/tcp triquest-lm triquest-lm 1589/tcp vqp VQP 1590/tcp gemini-lm gemini-lm 1591/tcp ncpm-pm ncpm-pm 1592/tcp commonspace commonspace 1593/tcp mainsoft-lm mainsoft-lm 1594/tcp sixtrak sixtrak 1595/tcp radio radio 1596/tcp radio-sm radio-sm 1597/tcp orbplus-iiop orbplus-iiop 1598/tcp picknfs picknfs 1599/tcp simbaservices simbaservices 1600/tcp issd 1601/tcp aas aas 1602/tcp inspect inspect 1603/tcp picodbc pickodbc 1604/tcp icabrowser icabrowser 1605/tcp slp Salutation Manager (Salutation Protocol) 1606/tcp slm-api Salutation Manager (SLM-API) 1607/tcp stt stt 1608/tcp smart-lm Smart Corp. License Manager 1609/tcp isysg-lm isysg-lm 1610/tcp taurus-wh taurus-wh 1611/tcp ill Inter Library Loan 1612/tcp netbill-trans NetBill Transaction Server 1613/tcp netbill-keyrep NetBill Key Repository 1614/tcp netbill-cred NetBill Credential Server 1615/tcp netbill-auth NetBill Authorization Server 1616/tcp netbill-prod NetBill Product Server 1617/tcp nimrod-agent Nimrod Inter-Agent Communication 1618/tcp skytelnet skytelnet 1619/tcp xs-openstorage xs-openstorage 1620/tcp faxportwinport faxportwinport 1621/tcp softdataphone softdataphone 1622/tcp ontime ontime 1623/tcp jaleosnd jaleosnd 1624/tcp udp-sr-port udp-sr-port 1625/tcp svs-omagent svs-omagent 1636/tcp cncp CableNet Control Protocol 1637/tcp cnap CableNet Admin Protocol 1638/tcp cnip CableNet Info Protocol 1639/tcp cert-initiator cert-initiator 1640/tcp cert-responder cert-responder 1641/tcp invision InVision 1642/tcp isis-am isis-am 1643/tcp isis-ambc isis-ambc 1645/tcp datametrics datametrics 1646/tcp sa-msg-port sa-msg-port 1647/tcp rsap rsap 1648/tcp concurrent-lm concurrent-lm 1649/tcp inspect inspect 1650/tcp nkd nkd 1651/tcp shiva_confsrvr shiva_confsrvr 1652/tcp xnmp xnmp 1653/tcp alphatech-lm alphatech-lm 1654/tcp stargatealerts stargatealerts 1655/tcp dec-mbadmin dec-mbadmin 1656/tcp dec-mbadmin-h dec-mbadmin-h 1657/tcp fujitsu-mmpdc fujitsu-mmpdc 1658/tcp sixnetudr sixnetudr 1659/tcp sg-lm Silicon Grail License Manager 1660/tcp skip-mc-gikreq skip-mc-gikreq 1661/tcp netview-aix-1 netview-aix-1 1662/tcp netview-aix-2 netview-aix-2 1663/tcp netview-aix-3 netview-aix-3 1664/tcp netview-aix-4 netview-aix-4 1665/tcp netview-aix-5 netview-aix-5 1666/tcp netview-aix-6 netview-aix-6 1667/tcp netview-aix-7 netview-aix-7 1668/tcp netview-aix-8 netview-aix-8 1669/tcp netview-aix-9 netview-aix-9 1670/tcp netview-aix-10 netview-aix-10 1671/tcp netview-aix-11 netview-aix-11 1672/tcp netview-aix-12 netview-aix-12 1673/tcp proshare-mc-1 Intel Proshare Multicast 1674/tcp proshare-mc-2 Intel Proshare Multicast 1675/tcp pdp Pacific Data Products 1676/tcp netcomm1 netcomm1 1677/tcp groupwise groupwise 1678/tcp prolink prolink 1679/tcp darcorp-lm darcorp-lm 1681/tcp sd-elmd sd-elmd 1682/tcp lanyon-lantern lanyon-lantern 1683/tcp ncpm-hip ncpm-hip 1684/tcp snaresecure SnareSecure 1685/tcp n2nremote n2nremote 1686/tcp cvmon cvmon 1687/tcp nsjtp-ctrl nsjtp-ctrl 1688/tcp nsjtp-data nsjtp-data 1689/tcp firefox firefox 1690/tcp ng-umds ng-umds 1691/tcp empire-empuma empire-empuma 1692/tcp sstsys-lm sstsys-lm 1693/tcp rrirtr rrirtr 1694/tcp rrimwm rrimwm 1695/tcp rrilwm rrilwm 1696/tcp rrifmm rrifmm 1697/tcp rrisat rrisat 1698/tcp rsvp-encap-1 RSVP-ENCAPSULATION-1 1699/tcp rsvp-encap-2 RSVP-ENCAPSULATION-2 1700/tcp mps-raft mps-raft 1701/tcp l2f,l2tp l2f,l2tp 1702/tcp deskshare deskshare 1703/tcp hb-engine hb-engine 1704/tcp bcs-broker bcs-broker 1705/tcp slingshot slingshot 1706/tcp jetform jetform 1707/tcp vdmplay vdmplay 1708/tcp gat-lmd gat-lmd 1709/tcp centra centra 1710/tcp impera impera 1711/tcp pptconference pptconference 1712/tcp registrar resource monitoring service 1713/tcp conferencetalk ConferenceTalk 1714/tcp sesi-lm sesi-lm 1715/tcp houdini-lm houdini-lm 1716/tcp xmsg xmsg 1717/tcp fj-hdnet fj-hdnet 1718/tcp h323gatedisc h323gatedisc 1719/tcp h323gatestat h323gatestat 1720/tcp h323hostcall h323hostcall 1721/tcp caicci caicci 1722/tcp hks-lm HKS License Manager 1723/tcp pptp pptp 1724/tcp csbphonemaster csbphonemaster 1725/tcp iden-ralp iden-ralp 1726/tcp iberiagames IBERIAGAMES 1727/tcp winddx winddx 1728/tcp telindus TELINDUS 1729/tcp citynl CityNL License Management 1730/tcp roketz roketz 1731/tcp msiccp MSICCP 1732/tcp proxim proxim 1733/tcp siipat SIMS - SIIPAT Protocol for Alarm Transmission 1734/tcp cambertx-lm Camber Corporation License Management 1735/tcp privatechat PrivateChat 1736/tcp street-stream street-stream 1737/tcp ultimad ultimad 1738/tcp gamegen1 GameGen1 1739/tcp webaccess webaccess 1740/tcp encore encore 1741/tcp cisco-net-mgmt cisco-net-mgmt 1742/tcp 3Com-nsd 3Com-nsd 1743/tcp cinegrfx-lm Cinema Graphics License Manager 1744/tcp ncpm-ft ncpm-ft 1745/tcp remote-winsock remote-winsock 1746/tcp ftrapid-1 ftrapid-1 1747/tcp ftrapid-2 ftrapid-2 1748/tcp oracle-em1 oracle-em1 1749/tcp aspen-services aspen-services 1750/tcp sslp Simple Socket Library‘s PortMaster 1751/tcp swiftnet SwiftNet 1752/tcp lofr-lm Leap of Faith Research License Manager 1753/tcp translogic-lm Translogic License Manager 1754/tcp oracle-em2 oracle-em2 1755/tcp ms-streaming ms-streaming 1756/tcp capfast-lmd capfast-lmd 1757/tcp cnhrp cnhrp 1758/tcp tftp-mcast tftp-mcast 1759/tcp spss-lm SPSS License Manager 1760/tcp www-ldap-gw www-ldap-gw 1761/tcp cft-0 cft-0 1762/tcp cft-1 cft-1 1763/tcp cft-2 cft-2 1764/tcp cft-3 cft-3 1765/tcp cft-4 cft-4 1766/tcp cft-5 cft-5 1767/tcp cft-6 cft-6 1768/tcp cft-7 cft-7 1769/tcp bmc-net-adm bmc-net-adm 1770/tcp bmc-net-svc bmc-net-svc 1771/tcp vaultbase vaultbase 1772/tcp essweb-gw EssWeb Gateway 1773/tcp kmscontrol KMSControl 1774/tcp global-dtserv global-dtserv 1776/tcp femis Federal Emergency Management Information System 1777/tcp powerguardian powerguardian 1779/tcp pharmasoft pharmasoft 1780/tcp dpkeyserv dpkeyserv 1781/tcp answersoft-lm answersoft-lm 1782/tcp hp-hcip hp-hcip 1783/tcp fjris Fujitsu Remote Install Service 1784/tcp finle-lm Finle License Manager 1785/tcp windlm Wind River Systems License Manager 1786/tcp funk-logger funk-logger 1787/tcp funk-license funk-license 1788/tcp psmond psmond 1789/tcp hello hello 1790/tcp nmsp Narrative Media Streaming Protocol 1791/tcp ea1 EA1 1792/tcp ibm-dt-2 ibm-dt-2 1793/tcp rsc-robot rsc-robot 1794/tcp cera-bcm cera-bcm 1795/tcp dpi-proxy dpi-proxy 1796/tcp vocaltec-admin Vocaltec Server Administration 1797/tcp uma UMA 1798/tcp etp Event Transfer Protocol 1799/tcp netrisk NETRISK 1801/tcp msmq Microsoft Message Que 1804/tcp enl ENL 1807/tcp fhsp Fujitsu Hot Standby Protocol 1812/tcp radius RADIUS 1813/tcp radius-acct RADIUS Accounting 1814/tcp tdp-suite TDP Suite 1815/tcp mmpft MMPFT 1816/tcp harp HARP 1818/tcp etftp Enhanced Trivial File Transfer Protocol 1819/tcp plato-lm Plato License Manager 1820/tcp mcagent mcagent 1821/tcp donnyworld donnyworld 1822/tcp es-elmd es-elmd 1823/tcp unisys-lm Unisys Natural Language License Manager 1824/tcp metrics-pas metrics-pas 1850/tcp gsi GSI 1863/tcp msnp MSNP 1865/tcp entp ENTP 1901/tcp fjicl-tep-a Fujitsu ICL Terminal Emulator Program A 1902/tcp fjicl-tep-b Fujitsu ICL Terminal Emulator Program B 1903/tcp linkname Local Link Name Resolution 1904/tcp fjicl-tep-c Fujitsu ICL Terminal Emulator Program C 1905/tcp sugp Secure UP.Link Gateway Protocol 1906/tcp tpmd TPortMapperReq 1908/tcp dawn Dawn 1911/tcp mtp Starlight Networks Multimedia Transport Protocol 1913/tcp armadp armadp 1914/tcp elm-momentum Elm-Momentum 1915/tcp facelink FACELINK 1916/tcp persona Persoft Persona 1917/tcp noagent nOAgent 1921/tcp noadmin NoAdmin 1944/tcp close-combat close-combat 1945/tcp dialogic-elmd dialogic-elmd 1946/tcp tekpls tekpls 1947/tcp hlserver hlserver 1948/tcp eye2eye eye2eye 1949/tcp ismaeasdaqlive ISMA Easdaq Live 1950/tcp ismaeasdaqtest ISMA Easdaq Test 1951/tcp bcs-lmserver bcs-lmserver 1973/tcp dlsrap Data Link Switching Remote Access Protocol 1985/tcp hsrp Hot Standby Router Protocol 1986/tcp licensedaemon cisco license management 1987/tcp tr-rsrb-p1 cisco RSRB Priority 1 port 1988/tcp tr-rsrb-p2 cisco RSRB Priority 2 port 1989/tcp tr-rsrb-p3 cisco RSRB Priority 3 port 1989/tcp mshnet MHSnet system 1990/tcp stun-p1 cisco STUN Priority 1 port 1991/tcp stun-p2 cisco STUN Priority 2 port 1992/tcp stun-p3 cisco STUN Priority 3 port 1992/tcp ipsendmsg IPsendmsg 1993/tcp snmp-tcp-port cisco SNMP TCP port 1994/tcp stun-port cisco serial tunnel port 1995/tcp perf-port cisco perf port 1996/tcp tr-rsrb-port cisco Remote SRB port 1997/tcp gdp-port cisco Gateway Discovery Protocol 1998/tcp x25-svc-port cisco X.25 service (XOT) 1999/tcp tcp-id-port cisco identification port 2000/tcp callbook 2001/tcp dc 2002/tcp globe 2004/tcp mailbox 2005/tcp berknet 2007/tcp dectalk 2012/tcp ttyinfo 2013/tcp raid-am 2014/tcp troff 2015/tcp cypress 2025/tcp ellpack 2030/tcp device2 2032/tcp blackboard 2033/tcp glogger 2035/tcp imsldoc 2040/tcp lam 2042/tcp isis isis 2044/tcp rimsl 2045/tcp cdfunc 2046/tcp sdfunc 2047/tcp dls 2049/tcp shilp 2049/tcp nfs Network File System - Sun Microsystems 2065/tcp dlsrpn Data Link Switch Read Port Number 2067/tcp dlswpn Data Link Switch Write Port Number 2090/tcp lrp Load Report Protocol 2091/tcp prp PRP 2102/tcp zephyr-srv Zephyr server 2103/tcp zephyr-clt Zephyr serv-hm connection 2104/tcp zephyr-hm Zephyr hostmanager 2105/tcp minipay MiniPay 2200/tcp ici ICI 2201/tcp ats Advanced Training System Program 2213/tcp kali Kali 2222/tcp unreg-ab2 Allen-Bradley unregistered port 2232/tcp ivs-video IVS Video default 2234/tcp directplay DirectPlay 2236/tcp nani Nani 2240/tcp recipe RECIPe 2241/tcp ivsd IVS Daemon 2242/tcp foliocorp Folio Remote Server 2279/tcp xmquery xmquery 2280/tcp lnvpoller LNVPOLLER 2281/tcp lnvconsole LNVCONSOLE 2282/tcp lnvalarm LNVALARM 2283/tcp lnvstatus LNVSTATUS 2284/tcp lnvmaps LNVMAPS 2285/tcp lnvmailmon LNVMAILMON 2286/tcp nas-metering NAS-Metering 2287/tcp dna DNA 2288/tcp netml NETML 2300/tcp cvmmon CVMMON 2307/tcp pehelp pehelp 2308/tcp sdhelp sdhelp 2313/tcp iapp IAPP (Inter Access Point Protocol) 2316/tcp sent-lm SENT License Manager 2321/tcp rdlap RDLAP over UDP 2322/tcp ofsd ofsd 2323/tcp 3d-nfsd 3d-nfsd 2326/tcp idcp IDCP 2327/tcp xingcsm xingcsm 2329/tcp nvd NVD 2330/tcp tscchat TSCCHAT 2333/tcp snapp SNAPP 2337/tcp ideesrv ideesrv 2344/tcp fcmsys fcmsys 2345/tcp dbm dbm 2356/tcp gxtelmd GXT License Managemant 2358/tcp futrix Futrix 2390/tcp rsmtp RSMTP 2396/tcp wusage Wusage 2397/tcp ncl NCL 2398/tcp orbiter Orbiter 2401/tcp cvspserver cvspserver 2407/tcp orion Orion 2412/tcp cdn CDN 2415/tcp comtest COMTEST 2418/tcp cas cas 2421/tcp g-talk G-Talk 2423/tcp rnrp RNRP 2427/tcp stgcp Simple telephony Gateway Control Protocol 2428/tcp ott One Way Trip Time 2429/tcp ft-role FT-ROLE 2430/tcp venus venus 2432/tcp codasrv codasrv 2436/tcp topx TOP/X 2438/tcp msp MSP 2443/tcp powerclientcsf PowerClient Central Storage Facility 2445/tcp dtn1 DTN1 2447/tcp ovwdb OpenView NNM daemon 2449/tcp ratl RATL 2451/tcp netchat netchat 2458/tcp griffin griffin 2500/tcp rtsserv Resource Tracking system server 2501/tcp rtsclient Resource Tracking system client 2528/tcp ncr_ccl NCR CCL 2529/tcp utsftp UTS FTP 2532/tcp ovtopmd OVTOPMD 2592/tcp netrek netrek 2628/tcp dict DICT 2634/tcp pk-electronics PK Electronics 2636/tcp solve Solve 2639/tcp aminet AMInet 2641/tcp hdl-srv HDL Server 2642/tcp tragic Tragic 2646/tcp and-lm AND Licence Manager 2653/tcp sonus Sonus 2655/tcp unglue UNIX Nt Glue 2656/tcp kana Kana 2700/tcp tqdata tqdata 2784/tcp www-dev world wide web - development 2785/tcp aic-np aic-np 2786/tcp aic-oncrpc aic-oncrpc - Destiny MCD database 2787/tcp piccolo piccolo - Cornerstone Software 2788/tcp fryeserv NetWare Loadable Module - Seagate Software 2789/tcp media-agent Media Agent 2908/tcp mao mao 2912/tcp epicon Epicon 2971/tcp netclip Net Clip 2974/tcp signal Signal 2975/tcp fjmpcm Fujitsu Configuration Management Service 3000/tcp hbci HBCI 3001/tcp redwood-broker Redwood Broker 3003/tcp cgms CGMS 3010/tcp gw Telerate Workstation 3012/tcp twsdss Trusted Web Client 3020/tcp cifs CIFS 3047/tcp hlserver Fast Security HL Server 3048/tcp pctrader Sierra Net PC Trader 3049/tcp nsws NSWS 3105/tcp cardbox Cardbox 3130/tcp icpv2 ICPv2 3141/tcp vmodem VMODEM 3143/tcp seaview Sea View 3147/tcp rfio RFIO 3264/tcp ccmail cc:mail/lotus 3266/tcp ns-cfg-server NS CFG Server 3267/tcp ibm-dial-out IBM Dial Out 3268/tcp msft-gc Microsoft Global Catalog 3273/tcp sxmp Simple Extensible Multiplexed Protocol 3275/tcp samd SAMD 3279/tcp admind admind 3281/tcp sysopt SYSOPT 3284/tcp 4talk 4Talk 3285/tcp plato Plato 3286/tcp e-net E-Net 3288/tcp cops COPS 3289/tcp enpc ENPC 3290/tcp caps-lm CAPS LOGISTICS TOOLKIT - LM 3291/tcp sah-lm S A Holditch & Associates - LM 3293/tcp fg-fps fg-fps 3294/tcp fg-gip fg-gip 3296/tcp rib-slm Rib License Manager 3299/tcp pdrncs pdrncs 3304/tcp opsession-srvr OP Session Server 3306/tcp MySQL MySQL 3309/tcp tns-adv TNS ADV 3313/tcp uorb Unify Object Broker 3314/tcp uohost Unify Object Host 3315/tcp cdid CDID 3318/tcp ssrip Swith to Swith Routing Information Protocol 3319/tcp sdt-lmd SDT License Manager 3321/tcp vnsstr VNSSTR 3326/tcp sftu SFTU 3327/tcp bbars BBARS 3328/tcp egptlm Eaglepoint License Manager 3329/tcp hp-device-disc HP Device Disc 3330/tcp mcs-calypsoicf MCS Calypso ICF 3333/tcp dec-notes DEC Notes 3338/tcp anet-b OMF data b 3339/tcp anet-l OMF data l 3340/tcp anet-m OMF data m 3341/tcp anet-h OMF data h 3342/tcp webtie WebTIE 3351/tcp btrieve BTRIEVE 3352/tcp ssql SSQL 3353/tcp fatpipe FATPIPE 3354/tcp suitjd SUITJD 3362/tcp dj-ilm DJ ILM 3372/tcp tip2 TIP 2 3378/tcp wsicopy WSICOPY 3379/tcp socorfs SOCORFS 3381/tcp geneous Geneous 3383/tcp esp-lm Enterprise Software Products License Manager 3390/tcp dsc Distributed Service Coordinator 3391/tcp savant SAVANT 3392/tcp efi-lm EFI License Management 3395/tcp dyna-lm Dyna License Manager (Elam) 3421/tcp bmap Bull Apprise portmapper 3455/tcp prsvp RSVP Port 3456/tcp vat VAT default data 3457/tcp vat-control VAT default control 3900/tcp udt_os Unidata UDT OS 3984/tcp mapper-nodemgr MAPPER network node manager 3985/tcp mapper-mapethd MAPPER TCP/IP server 3986/tcp mapper-ws_ethd MAPPER workstation server 4001/tcp newoak NewOak 4008/tcp netcheque NetCheque accounting 4096/tcp bre BRE (Bridge Relay Element) 4132/tcp nuts_dem NUTS Daemon 4133/tcp nuts_bootp NUTS Bootp Server 4143/tcp oidsr Document Replication 4321/tcp rwhois Remote Who Is 4343/tcp unicall UNICALL 4346/tcp elanlm ELAN LM 4348/tcp itose ITOSE 4444/tcp krb524 KRB524 4444/tcp nv-video NV Video default 4446/tcp n1-fwp N1-FWP 4449/tcp privatewire PrivateWire 4450/tcp camp Camp 4451/tcp ctisystemmsg CTI System Msg 4452/tcp ctiprogramload CTI Program Load 4500/tcp sae-urn sae-urn 4501/tcp urn-x-cdchoice urn-x-cdchoice 4546/tcp sf-lm SF License Manager (Sentinel) 4672/tcp rfa remote file access server 4800/tcp iims Icona Instant Messenging System 4801/tcp iwec Icona Web Embedded Chat 4802/tcp ilss Icona License System Server 4827/tcp htcp HTCP 4868/tcp phrelay Photon Relay 4885/tcp abbs ABBS 5002/tcp rfe radio free ethernet 5003/tcp fmpro-internal FileMaker, Inc. - Proprietary transport 5004/tcp avt-profile-1 avt-profile-1 5005/tcp avt-profile-2 avt-profile-2 5010/tcp telelpathstart TelepathStart 5020/tcp zenginkyo-1 zenginkyo-1 5021/tcp zenginkyo-2 zenginkyo-2 5050/tcp mmcc multimedia conference control tool 5060/tcp sip SIP 5150/tcp atmp Ascend Tunnel Management Protocol 5190/tcp aol America-Online 5191/tcp aol-1 AmericaOnline1 5192/tcp aol-2 AmericaOnline2 5193/tcp aol-3 AmericaOnline3 5272/tcp pk PK 5300/tcp hacl-hb # HA cluster heartbeat 5301/tcp hacl-gs # HA cluster general services 5304/tcp hacl-local # HA Cluster Commands 5305/tcp hacl-test # HA Cluster Test 5307/tcp sco-aip SCO AIP 5310/tcp outlaws Outlaws 5311/tcp tmlogin TM Login 5400/tcp excerpt Excerpt Search 5402/tcp mftp MFTP 5404/tcp hpoms-dps-lstn HPOMS-DPS-LSTN 5407/tcp foresyte-clear Foresyte-Clear 5409/tcp salient-dtasrv Salient Data Server 5410/tcp salient-usrmgr Salient User Manager 5411/tcp actnet ActNet 5414/tcp statusd StatusD 5418/tcp mcntp MCNTP 5419/tcp dj-ice DJ-ICE 5500/tcp fcp-addr-srvr1 fcp-addr-srvr1 5501/tcp fcp-addr-srvr2 fcp-addr-srvr2 5502/tcp fcp-srvr-inst1 fcp-srvr-inst1 5503/tcp fcp-srvr-inst2 fcp-srvr-inst2 5504/tcp fcp-cics-gw1 fcp-cics-gw1 5555/tcp personal-agent Personal Agent 5602/tcp a1-msc A1-MSC 5603/tcp a1-bs A1-BS 5631/tcp pcanywheredata pcANYWHEREdata 5632/tcp pcanywherestat pcANYWHEREstat 5678/tcp rrac Remote Replication Agent Connection 5679/tcp dccm Direct Cable Connect Manager 5713/tcp proshareaudio proshare conf audio 5714/tcp prosharevideo proshare conf video 5715/tcp prosharedata proshare conf data 5717/tcp prosharenotify proshare conf notify 5729/tcp openmail Openmail User Agent Layer 5741/tcp ida-discover1 IDA Discover Port 1 5742/tcp ida-discover2 IDA Discover Port 2 5745/tcp fcopy-server fcopy-server 5746/tcp fcopys-server fcopys-server 5755/tcp openmailg OpenMail Desk Gateway server 5757/tcp x500ms OpenMail X.500 Directory Server 5766/tcp openmailns OpenMail NewMail Server 5767/tcp s-openmail OpenMail Suer Agent Layer (Secure) 6000/tcp x11 X Window System 6110/tcp softcm HP SoftBench CM 6111/tcp spc HP SoftBench Sub-Process Control 6112/tcp dtspcd dtspcd 6123/tcp backup-express Backup Express 6141/tcp meta-corp Meta Corporation License Manager 6142/tcp aspentec-lm Aspen Technology License Manager 6143/tcp watershed-lm Watershed License Manager 6144/tcp statsci1-lm StatSci License Manager - 1 6145/tcp statsci2-lm StatSci License Manager - 2 6146/tcp lonewolf-lm Lone Wolf Systems License Manager 6147/tcp montage-lm Montage License Manager 6148/tcp ricardo-lm Ricardo North America License Manager 6149/tcp tal-pod tal-pod 6253/tcp crip CRIP 6389/tcp clariion-evr01 clariion-evr01 6500/tcp boks BoKS Master 6558/tcp xdsxdm 6665/tcp ircu IRCU 6670/tcp vocaltec-gold Vocaltec Global Online Directory 6672/tcp vision_server vision_server 6673/tcp vision_elmd vision_elmd 6790/tcp hnmp HNMP 6831/tcp ambit-lm ambit-lm 6969/tcp acmsoda acmsoda 7010/tcp ups-onlinet onlinet uninterruptable power supplies 7020/tcp dpserve DP Serve 7070/tcp arcp ARCP 7099/tcp lazy-ptop lazy-ptop 7100/tcp font-service X Font Service 7121/tcp virprot-lm Virtual Prototypes License Manager 7174/tcp clutild Clutild 7200/tcp fodms FODMS FLIP 7201/tcp dlip DLIP 7395/tcp winqedit winqedit 7426/tcp pmdmgr OpenView DM Postmaster Manager 7430/tcp xmpv7 OpenView DM xmpv7 api pipe 7431/tcp pmd OpenView DM ovc/xmpv3 api pipe 7491/tcp telops-lmd telops-lmd 7511/tcp pafec-lm pafec-lm 7544/tcp nta-ds FlowAnalyzer DisplayServer 7545/tcp nta-us FlowAnalyzer UtilityServer 7588/tcp sun-lm Sun License Manager 7777/tcp cbt cbt 7781/tcp accu-lmgr accu-lmgr 7932/tcp t2-drm Tier 2 Data Resource Manager 7933/tcp t2-brm Tier 2 Business Rules Manager 7999/tcp irdmi2 iRDMI2 8000/tcp irdmi iRDMI 8032/tcp pro-ed ProEd 8400/tcp cvd cvd 8401/tcp sabarsd sabarsd 8402/tcp abarsd abarsd 8403/tcp admind admind 8450/tcp npmp npmp 8473/tcp vp2p Vitual Point to Point 8888/tcp ddi-tcp-1 NewsEDGE server TCP (TCP 1) 8889/tcp ddi-tcp-2 Desktop Data TCP 1 8890/tcp ddi-tcp-3 Desktop Data TCP 2 8891/tcp ddi-tcp-4 Desktop Data TCP 3: NESS application 8892/tcp ddi-tcp-5 Desktop Data TCP 4: FARM product 8893/tcp ddi-tcp-6 Desktop Data TCP 5: NewsEDGE/Web application 8894/tcp ddi-tcp-7 Desktop Data TCP 6: COAL application 9000/tcp cslistener CSlistener 9006/tcp sctp SCTP 9090/tcp websm WebSM 9535/tcp man 9594/tcp msgsys Message System 9595/tcp pds Ping Discovery Service 9876/tcp sd Session Director 9992/tcp palace Palace 9993/tcp palace Palace 9994/tcp palace Palace 9995/tcp palace Palace 9996/tcp palace Palace 9997/tcp palace Palace 9998/tcp distinct32 Distinct32 9999/tcp distinct distinct 10000/tcp ndmp Network Data Management Protocol 11000/tcp irisa IRISA 11001/tcp metasys Metasys 12753/tcp tsaf tsaf port 13160/tcp i-zipqd I-ZIPQD 13720/tcp bprd BPRD Protocol (VERITAS NetBackup) 13721/tcp bpbrm BPBRM Protocol (VERITAS NetBackup) 13782/tcp bpcd VERITAS NetBackup 17219/tcp chipper Chipper 18000/tcp biimenu Beckman Instruments, Inc. 19410/tcp hp-sco hp-sco 19411/tcp hp-sca hp-sca 19541/tcp jcp JCP Client 21845/tcp webphone webphone 21846/tcp netspeak-is NetSpeak Corp. Directory Services 21847/tcp netspeak-cs NetSpeak Corp. Connection Services 21848/tcp netspeak-acd NetSpeak Corp. Automatic Call Distribution 21849/tcp netspeak-cps NetSpeak Corp. Credit Processing System 22273/tcp wnn6 wnn6 22555/tcp vocaltec-wconf Vocaltec Web Conference 22800/tcp aws-brf Telerate Information Platform LAN 22951/tcp brf-gw Telerate Information Platform WAN 24000/tcp med-ltp med-ltp 24004/tcp med-ovw med-ovw 24005/tcp med-ci med-ci 25000/tcp icl-twobase1 icl-twobase1 25001/tcp icl-twobase2 icl-twobase2 25002/tcp icl-twobase3 icl-twobase3 25003/tcp icl-twobase4 icl-twobase4 25004/tcp icl-twobase5 icl-twobase5 25005/tcp icl-twobase6 icl-twobase6 25006/tcp icl-twobase7 icl-twobase7 25007/tcp icl-twobase8 icl-twobase8 25008/tcp icl-twobase9 icl-twobase9 25009/tcp icl-twobase10 icl-twobase10 25793/tcp vocaltec-hos Vocaltec Address Server 26000/tcp quake quake 26208/tcp wnn6-ds wnn6-ds 45678/tcp eba EBA PRISE 47557/tcp dbbrowse Databeam Corporation 47806/tcp ap ALC Protocol 47808/tcp bacnet Building Automation and Control Networks
0 通常用于分析操作系统。这一方法能够工作是因为在一些系统中“0”是无效端口,当你试图使用一种通常的闭合端口连接它时将产生不同的结果。一种典型的扫描:使用IP地址为0.0.0.0,设置ACK位并在以太网层广播。
1 tcpmux TCP Port Service Multiplexer 传输控制协议端口服务多路开关选择器 2 compressnet Management Utility compressnet 管理实用程序 3 compressnet Compression Process 压缩进程 5 rje Remote Job Entry 远程作业登录 7 echo Echo 回显 9 discard Discard 丢弃 11 systat Active Users 在线用户 13 daytime Daytime 时间 17 qotd Quote of the Day 每日引用 18 msp Message Send Protocol 消息发送协议 19 chargen Character Generator 字符发生器 20 ftp-data File Transfer[Default Data] 文件传输协议(默认数据口) 21 ftp File Transfer[Control] 文件传输协议(控制) 22 ssh SSH Remote Login Protocol SSH远程登录协议 23 telnet Telnet 终端仿真协议 24 any private mail system 预留给个人用邮件系统 25 smtp Simple Mail Transfer 简单邮件发送协议 27 nsw-fe NSW User System FE NSW 用户系统现场工程师 29 msg-icp MSG ICP MSG ICP 31 msg-auth MSG Authentication MSG验证 33 dsp Display Support Protocol 显示支持协议 35 any private printer server 预留给个人打印机服务 37 time Time 时间 38 rap Route Access Protocol 路由访问协议 39 rlp Resource Location Protocol 资源定位协议 41 graphics Graphics 图形 42 nameserver WINS Host Name Server WINS 主机名服务 43 nicname Who Is "绰号" who is服务 44 mpm-flags MPM FLAGS Protocol MPM(消息处理模块)标志协议 45 mpm Message Processing Module [recv] 消息处理模块 46 mpm-snd MPM [default send] 消息处理模块(默认发送口) 47 ni-ftp NI FTP NI FTP 48 auditd Digital Audit Daemon 数码音频后台服务49 tacacs Login Host Protocol (TACACS) TACACS登录主机协议50 re-mail-ck Remote Mail Checking Protocol 远程邮件检查协议[未结束] 51 la-maint IMP Logical Address Maintenance IMP(接口信息处理机)逻辑地址维护 52 xns-time XNS Time Protocol 施乐网络服务系统时间协议 53 domain Domain Name Server 域名服务器 54 xns-ch XNS Clearinghouse 施乐网络服务系统票据交换 55 isi-gl ISI Graphics Language ISI图形语言 56 xns-auth XNS Authentication 施乐网络服务系统验证 57 ? any private terminal access 预留个人用终端访问 58 xns-mail XNS Mail 施乐网络服务系统邮件 59 any private file service 预留个人文件服务 60 Unassigned 未定义 61 ni-mail NI MAIL NI邮件? 62 acas ACA Services 异步通讯适配器服务 63 whois+ whois+ WHOIS+ 64 covia Communications Integrator (CI) 通讯接口 65 tacacs-ds TACACS-Database Service TACACS数据库服务 66 sql*net Oracle SQL*NET Oracle SQL*NET 67 bootps Bootstrap Protocol Server 引导程序协议服务端 68 bootpc Bootstrap Protocol Client 引导程序协议客户端 69 tftp Trivial File Transfer 小型文件传输协议 70 gopher Gopher 信息检索协议 71 netrjs-1 Remote Job Service 远程作业服务 72 netrjs-2 Remote Job Service 远程作业服务 73 netrjs-3 Remote Job Service 远程作业服务 74 netrjs-4 Remote Job Service 远程作业服务 75 any private dial out service 预留给个人拨出服务 76 deos Distributed External Object Store 分布式外部对象存储 77 any private RJE service 预留给个人远程作业输入服务 78 vettcp vettcp 修正TCP? 79 finger Finger 查询远程主机在线用户等信息 80 http World Wide Web HTTP 全球信息网超文本传输协议 81 hosts2-ns HOSTS2 Name Server HOST2名称服务 82 xfer XFER Utility 传输实用程序 83 mit-ml-dev MIT ML Device 模块化智能终端ML设备 84 ctf Common Trace Facility 公用追踪设备 85 mit-ml-dev MIT ML Device 模块化智能终端ML设备 86 mfcobol Micro Focus Cobol Micro Focus Cobol编程语言 87 any private terminal link 预留给个人终端连接 88 kerberos Kerberos Kerberros安全认证系统 89 su-mit-tg SU/MIT Telnet Gateway SU/MIT终端仿真网关 90 dnsix DNSIX Securit Attribute Token Map DNSIX 安全属性标记图91 mit-dov MIT Dover Spooler MIT Dover假脱机 92 npp Network Printing Protocol 网络打印协议 93 dcp Device Control Protocol 设备控制协议 94 objcall Tivoli Object Dispatcher Tivoli对象调度 95 supdup SUPDUP 96 dixie DIXIE Protocol Specification DIXIE协议规范 97 swift-rvf(Swift Remote Virtural File Protocol)快速远程虚拟文件协议98 tacnews TAC News TAC新闻协议
限制端口防非法入侵
一般来说,我们采用一些功能强大的反黑软件和防火墙来保证我们的系统安全,本文拟用一种简易的办法——通过限制端口来帮助大家防止非法入侵。
非法入侵的方式
简单说来,非法入侵的方式可粗略分为4种:
1、扫描端口,通过已知的系统Bug攻入主机。
2、种植木马,利用木马开辟的后门进入主机。
3、采用数据溢出的手段,迫使主机提供后门进入主机。
4、利用某些软件设计的漏洞,直接或间接控制主机。
非法入侵的主要方式是前两种,尤其是利用一些流行的黑客工具,通过第一种方式攻击主机的情况最多、也最普遍;而对后两种方式来说,只有一些手段高超的黑客才利用,波及面并不广泛,而且只要这两种问题一出现,软件服务商很快就会提供补丁,及时修复系统。
因此,如果能限制前两种非法入侵方式,就能有效防止利用黑客工具的非法入侵。而且前两种非法入侵方式有一个共同点,就是通过端口进入主机。
端口就像一所房子(服务器)的几个门一样,不同的门通向不同的房间(服务器提供的不同服务)。我们常用的FTP默认端口为21,而WWW网页一般默认端 口是80。但是有些马虎的网络管理员常常打开一些容易被侵入的端口服务,比如139等;还有一些木马程序,比如冰河、BO、广外等都是自动开辟一个您不察 觉的端口。那么,只要我们把自己用不到的端口全部封锁起来,不就杜绝了这两种非法入侵吗?
限制端口的方法
对于个人用户来说,您可以限制所有的端口,因为您根本不必让您的机器对外提供任何服务;而对于对外提供网络服务的服务器,我们需把必须利用的端口(比如WWW端口80、FTP端口21、邮件服务端口25、110等)开放,其他的端口则全部关闭。
这里,对于采用Windows 2000或者Windows XP的用户来说,不需要安装任何其他软件,可以利用“TCP/IP筛选”功能限制服务器的端口。具体设置如下:
1、右键点击“网上邻居”,选择“属性”,然后双击“本地连接”(如果是拨号上网用户,选择“我的连接”图标),弹出“本地连接状态”对话框。
2、点击[属性]按钮,弹出“本地连接 属性”,选择“此连接使用下列项目”中的“Internet协议(TCP/IP)”,然后点击[属性]按钮。
3、在弹出的“Internet协议(TCP/IP)”对话框中点击[高级]按钮。在弹出的“高级TCP/IP 设置”中,选择“选项”标签,选中“TCP/IP筛选”,然后点击[属性]按钮。
4、在弹出的“TCP/IP筛选”对话框里选择“启用TCP/IP筛选”的复选框,然后把左边“TCP端口”上的“只允许”选上。
每一项服务都对应相应的端口,比如众如周知的WWW服务的端口是80,smtp是25,ftp是21,win2000安装中默认的都是这些服务开启的。对于个人用户来说确实没有必要,关掉端口也就是关闭无用的服务。
“控制面板”的“管理工具”中的“服务”中来配置。
1、关闭7.9等等端口:关闭Simple TCP/IP Service,支持以下TCP/IP服务:Character Generator,Daytime, Discard, Echo, 以及 Quote of the Day。
2、关闭80口:关掉WWW服务。在“服务”中显示名称为"World Wide Web Publishing Service",通过 Internet 信息服务的管理单元提供 Web 连接和管理。
3、关掉25端口:关闭Simple Mail Transport Protocol (SMTP)服务,它提供的功能是跨网传送电子邮件。
4、关掉21端口:关闭FTP Publishing Service,它提供的服务是通过 Internet 信息服务的管理单元提供 FTP 连接和管理。
5、关掉23端口:关闭Telnet服务,它允许远程用户登录到系统并且使用命令行运行控制台程序。
6、还有一个很重要的就是关闭server服务,此服务提供RPC支持、文件、打印以及命名管道共享。关掉它就关掉了win2k的默认共享,比如ipc$、c$、admin$等等,此服务关闭不影响您的其他操作。
7、还有一个就是139端口,139端口是NetBIOS Session端口,用来文件和打印共享,注意的是运行samba的unix机器也开放了139端口,功能一样。以前流光2000用来判断对方主机类型不太准确,估计就是139端口开放既认为是NT机,现在好了。
关闭139口听方法是在“网络和拨号连接”中“本地连接”中选取“Internet协议(TCP/IP)”属性,进入“高级TCP/IP设置”“WINS设置”里面有一项“禁用TCP/IP的NETBIOS”,打勾就关闭了139端口。
对于个人用户来说,可以在各项服务属性设置中设为“禁用”,以免下次重启服务也重新启动,端口也开放了。
谨防黑客通过“端口扫描”进行攻击
黑客的探测方式里除了侦察IP,还有一项——端口扫描。通过“端口扫描”可以知道被扫描的计算机哪些服务、端口是打开而没有被使用的(可以理解为寻找通往计算机的通道)。
一、端口扫描
网上很容易找到远程端口扫描的工具,如Superscan、IP Scanner、Fluxay(流光)等(
如图1),这就是用“流光”对试验主机192.168.1.8进行端口扫描后的结果。从中我们可以清楚地了解,该主机的哪些非常用端口是打开的;是否支持FTP、Web服务;且FTP服务是否支持“匿名”,以及IIS版本,是否有可以被成功攻破的IIS漏洞也显示出来。
二、阻止端口扫描
防范端口扫描的方法有两个:
1.关闭闲置和有潜在危险的端口
这个方法有些“死板”,它的本质是——将所有用户需要用到的正常计算机端口外的其他端口都关闭掉。因为就黑客而言,所有的端口都可能成为攻击的目标。换 句话说“计算机的所有对外通讯的端口都存在潜在的危险”,而一些系统必要的通讯端口,如访问网页需要的HTTP(80端口);QQ(4000端口)等不能 被关闭。
在Windows NT核心系统(Windows 2000/XP/ 2003)中要关闭掉一些闲置端口是比较方便的,可以采用“定向关闭指定服务的端口”和“只开放允许端口的方式”。计算机的一些网络服务会有系统分配默认 的端口,将一些闲置的服务关闭掉,其对应的端口也会被关闭了(如图2)。进入“控制面板”、“管理工具”、“服务”项内,关闭掉计算机的一些没有使用的服 务(如FTP服务、DNS服务、IIS
Admin服务等等),它们对应的端口也被停用了。至于“只开放允许端口的方式”,可以利用系统的“TCP/IP筛选”功能实现,设置的时候,“只允许” 系统的一些基本网络通讯需要的端口即可。
2.检查各端口,有端口扫描的症状时,立即屏蔽该端口
这种预防端口扫描的方式显然用户自己手工是不可能完成的,或者说完成起来相当困难,需要借助软件。这些软件就是我们常用的网络防火墙。
防火墙的工作原理是:首先检查每个到达你的电脑的数据包,在这个包被你机上运行的任何软件看到之前,防火墙有完全的否决权,可以禁止你的电脑接收 Internet上的任何东西。当第一个请求建立连接的包被你的电脑回应后,一个“TCP/IP端口”被打开;端口扫描时,对方计算机不断和本地计算机建 立连接,并逐渐打开各个服务所对应的“TCP/IP端口”及闲置端口,防火墙经过自带的拦截规则判断,就能够知道对方是否正进行端口扫描,并拦截掉对方发
送过来的所有扫描需要的数据包。
现在市面上几乎所有网络防火墙都能够抵御端口扫描,在默认安装后,应该检查一些防火墙所拦截的端口扫描规则是否被选中,否则它会放行端口扫描,而只是在日志中留下信息而已。