计算机端口是英语port义译可视为计算机与外部通信交流的出口。硬件领域的端口也被称为接口，如：USB端口、串行端口等。软件领域的端口一般是指网络中面向连接服务和无连接服务的通信协议端口，包括一些数据结构和I/O缓冲区(基本输入输出)。 可以先了解面向连接和无连接协议（Connection－OrientedandConnectionlessProtocols） 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：无连接服务只在数据传输阶段。消除除数据通信以外的其他费用。只要发送实体是活跃的，就不需要接收实体。其优点是灵活、方便、快速，特别适合传输少量零星的报纸，但无连接服务不能防止报纸丢失、重复或混乱。 区分面向连接服务和无连接服务的概念，特别简单和生动的例子是：打电话和写信。如果两个人想打电话，他们必须先建立连接拨号，等待响应才能相互传递信息，最后释放连接挂电话。写信没那么复杂。填写地址姓名后，直接扔到邮箱，收件人就能收到。TCP/IP该协议在网络层中没有连接（数据包只发送到互联网上，如何传输和到达，以及是否到达由网络设备管理）。而端口是传输层的内容，面向连接。该协议中不到1024的端口有一个准确的定义，它们对应于一些常见的互联网服务。这些常见的服务可以分为使用TCP端口(面向连接，如电话)和使用UDP两种端口(写信等无连接)。 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，OpenSystemInterconnectionReferenceModel）七层协议显示，传输层与网络层最大的区别在于传输层提供过程通信能力，网络通信的最终地址不仅包括主机地址，它还包一些可描述过程的标志。所以TCP/IP协议提出的协议端口可视为网络通信过程的标识符。所以TCP/IP协议提出的协议端口可视为网络通信过程的标识符。 应用程序(转入内存运行后一般称为:过程)通过系统调用与端口建立连接（binding，绑定)后，传输层传输到端口的数据被相应的过程接收，传输层的数据从端口输出。在TCP/IP在协议的实现中，端口操作与一般操作相似I/O在操作过程中获得端口相当于获得当地唯一的端口I/O一般读写方式可以访问文件。 与文件描述符类似，每个端口都有一个叫做端口号的整数描述符来区分不同的端口。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，所以各自的端口号是独立的。TCP有一个255号端口，UDP也可以有255号端口，两者不冲突。 端口号有两种基本分配方式：第一种称为全球分配，这是一种集中分配方式，由公认的权威中央机构根据用户需要统一分配，并公布结果，第二种是本地分配，也称为动态连接，即当过程需要访问传输层服务时，向当地操作系统申请，操作系统返回当地唯一的端口号，然后通过适当的系统呼叫，将自己与端口连接起来（binding，绑定）。TCP/IP端口号的分配结合了以上两种方式，将端口号分为两部分，少量作为保留端口，全局分配给服务流程。TCP/IP端口号的分配结合了上述两种方式，将端口号分为两部分，少量作为保留端口，并以整体方式分配给服务流程。每个标准服务器都有一个全球公认的端口，即使在不同的机器上。剩下的是自由端口，当地分配。TCP和UDP不到256的端口可作为保留端口。按端口号可分为三类：(1)公认端口（WellKnownPorts）：从0到1023，它们紧密绑定（binding）在某些服务中。通常，这些端口的通信清楚地显示了某些服务协议。例如，80个端口实际上总是HTTP通讯。(2)注册端口（RegisteredPorts）：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（Dynamicand/orPrivatePorts）：从49152到65535。理论上，这些端口不应该分配给服务。事实上，动态端口通常从1024开始分配。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： 一种常见的技术是将一个端口重定向另一个地址。例如默认的HTTP端口是80，很多人把它重定向另一个端口，比如8080。如果是这样的话，如果你想访问这篇文章，你应该改用这个地址http://wwd.3322.net:8080/net/port.htm(当然，这只是理论上的例子)。 实现重定向是隐藏公认的默认端口，降低破坏率。这样，如果有人想攻击公认的默认端口，必须先扫描端口。大多数端口的重定向与原端口相似，如大多数端口HTTP端口由80变化而来：81、88、8000、8080、88888。同样POP端口原本在110，也常被重定向到1100。还有很多情况是选择统计上有特殊意义的数字，如1234、23456、34567等。42、69、666选择奇怪的数字，42、69、666、3137。近年来，越来越多的远程控制木马(RemoteAccessTrojans,RATs)使用相同的默认端口。如NetBus默认端口为12345。BlakeR.Swopes还有向端口的使用还有另一个原因UNIX在系统上，如果你想听1024以下的端口，你需要有一个root权限。如果你没有root权限又想开web服务，你就需要将其安装在较高的端口。此外，一些ISP防火墙会阻挡低端口的通信，所以即使你有整个机器，你仍然需要重定向端口。端口 ??????????英文注释的功能 ????????????中文注释的功能1 tcpmux TCPPortServiceMultiplexer 多路开关选择传输控制协议端口服务2 compressnet ManagementUtility compressnet管理实用程序3 compressnet CompressionProcess 压缩进程5 rje RemoteJobEntry 远程作业登录7 echo Echo 回显9 discard Discard 丢弃11 systat ActiveUsers 在线用户13 daytime Daytime 时间17 qotd QuoteoftheDay 每日引用18 msp MessageSendProtocol 发送消息协议19 chargen CharacterGenerator 字符发生器20 ftp-data FileTransfer[DefaultData] 文件传输协议(默认数据口) 21 ftp FileTransfer[Control] 文件传输协议(控制)22 ssh SSHRemoteLoginProtocol SSH远程登录协议23 telnet Telnet 终端仿真协议24 ? anyprivatemailsystem 预留个人邮件系统25 smtp SimpleMailTransfer 简单邮件发送协议27 nsw-fe NSWUserSystemFE NSW现场工程师用户系统29 msg-icp MSGICP MSG ICP31 msg-auth MSGAuthentication MSG验证33 dsp DisplaySupportProtocol 显示支持协议35 ? anyprivateprinterserver 预留个人打印机服务37 time Time 时间38 rap RouteAccessProtocol 路由访问协议39 rlp ResourceLocationProtocol 资源定位协议41 graphics Graphics 图形42 nameserver WINSHostNameServer WINS主机名服务43 nicname WhoIs "绰号"whois服务44 mpm-flags MPMFLAGSProtocol MPM(消息处理模块)标志协议45 mpm MessageProcessingModule[recv] 消息处理模块 46 mpm-snd MPM[defaultsend] 消息处理模块(默认发送)47 ni-tp 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 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 99 metagram Metagram Relay 100 newacct [unauthorized use]reserved 0/tcp Reserved [JBP] reserved 0/udp Reserved [JBP] tcpmux 1/tcp TCP Port Service Multiplexer [MKL] tcpmux 1/udp TCP Port Service Multiplexer [MKL] compressnet 2/tcp Management Utility [BV15] compressnet 2/udp Management Utility [BV15] compressnet 3/tcp Compression Process [BV15] compressnet 3/udp Compression Process [BV15] rje 5/tcp Remote Job Entry [12,JBP] rje 5/udp Remote Job Entry [12,JBP] echo 7/tcp Echo [95,JBP] echo 7/udp Echo [95,JBP] discard 9/tcp Discard [94,JBP] discard 9/udp Discard [94,JBP] systat 11/tcp Active Users [89,JBP] systat 11/udp Active Users [89,JBP] daytime 13/tcp Daytime [93,JBP] daytime 13/udp Daytime [93,JBP] netstat 15/tcp Netstat qotd 17/tcp Quote of the Day [100,JBP] qotd 17/udp Quote of the Day [100,JBP] msp 18/tcp Message Send Protocol [RXN] msp 18/udp Message Send Protocol [RXN] chargen 19/tcp ttytst source Character Generator chargen 19/udp ttytst source Character Generator ftp-data 20/tcp File Transfer [Default Data] [96,JBP] ftp-data 20/udp File Transfer [Default Data] [96,JBP] ftp 21/tcp File Transfer [Control] [96,JBP] ftp 21/udp File Transfer [Control] [96,JBP] ssh 22/tcp Secure Shell - RSA encrypted rsh telnet 23/tcp Telnet [112,JBP] telnet 23/udp Telnet [112,JBP] priv-mail 24/tcp any private mail system [RA11] priv-mail 24/udp any private mail system [RA11] smtp 25/tcp Simple Mail Transfer [102,JBP] smtp 25/udp Simple Mail Transfer [102,JBP] nsw-fe 27/tcp NSW User System FE [24,RHT] nsw-fe 27/udp NSW User System FE [24,RHT] msg-icp 29/tcp MSG ICP [85,RHT] msg-icp 29/udp MSG ICP [85,RHT] msg-auth 31/tcp MSG Authentication [85,RHT] msg-auth 31/udp MSG Authentication [85,RHT] dsp 33/tcp Display Support Protocol [EXC] dsp 33/udp Display Support Protocol [EXC] priv-print 35/tcp any private printer server [JBP] priv-print 35/udp any private printer server [JBP] time 37/tcp Time [108,JBP] time 37/udp Time [108,JBP] rap 38/tcp Route Access Protocol rap 38/udp Route Access Protocol rlp 39/tcp resource Resource Location Protocol rlp 39/udp resource Resource Location Protocol graphics 41/tcp Graphics [129,JBP] graphics 41/udp Graphics [129,JBP] nameserver 42/tcp Host Name Server [99,JBP] nameserver 42/udp Host Name Server [99,JBP] nicname 43/tcp Who Is [55,ANM2] nicname 43/udp Who Is [55,ANM2] mpm-flags 44/tcp MPM FLAGS Protocol [JBP] mpm-flags 44/udp MPM FLAGS Protocol [JBP] mpm 45/tcp Message Processing Module [recv] [98,JBP] mpm 45/udp Message Processing Module [recv] [98,JBP] mpm-snd 46/tcp MPM [default send] [98,JBP] mpm-snd 46/udp MPM [default send] [98,JBP] ni-ftp 47/tcp NI FTP [134,SK8] ni-ftp 47/udp NI FTP [134,SK8] auditd 48/tcp Digital Audit Daemon auditd 48/udp Digital Audit Daemon login 49/tcp Login Host Protocol [PHD1] login 49/udp Login Host Protocol [PHD1] re-mail-ck 50/tcp Remote Mail Checking Protocol [171,SXD1] re-mail-ck 50/udp Remote Mail Checking Protocol [171,SXD1] la-maint 51/tcp IMP Logical Address Maintenance [76,AGM] la-maint 51/udp IMP Logical Address Maintenance [76,AGM] xns-time 52/tcp XNS Time Protocol [SXA] xns-time 52/udp XNS Time Protocol [SXA] domain 53/tcp Domain Name Server [81,95,PM1] domain 53/udp Domain Name Server [81,95,PM1] xns-ch 54/tcp XNS Clearinghouse [SXA] xns-ch 54/udp XNS Clearinghouse [SXA] isi-gl 55/tcp ISI Graphics Language [7,RB9] isi-gl 55/udp ISI Graphics Language [7,RB9] xns-auth 56/tcp XNS Authentication [SXA] xns-auth 56/udp XNS Authentication [SXA] mtp 57/tcp deprecated priv-term 57/tcp any private terminal access [JBP] priv-term 57/udp any private terminal access [JBP] xns-mail 58/tcp XNS Mail [SXA] xns-mail 58/udp XNS Mail [SXA] priv-file 59/tcp any private file service [JBP] priv-file 59/udp any private file service [JBP] ni-mail 61/tcp NI MAIL [5,SK8] ni-mail 61/udp NI MAIL [5,SK8] acas 62/tcp ACA Services [EXW] acas 62/udp ACA Services [EXW] via-ftp 63/tcp VIA Systems - FTP [DXD] via-ftp 63/udp VIA Systems - FTP [DXD] whois++ 63/tcp whois++ 63/udp covia 64/tcp Communications Integrator (CI) [TXD] covia 64/udp Communications Integrator (CI) [TXD] tacacs-ds 65/tcp TACACS-Database Service [3,KH43] tacacs-ds 65/udp TACACS-Database Service [3,KH43] sql*net 66/tcp Oracle SQL*NET [JFH2] sql*net 66/udp Oracle SQL*NET [JFH2] bootps 67/tcp Bootstrap Protocol Server [36,WJC2] bootps 67/udp Bootstrap Protocol Server [36,WJC2] bootpc 68/tcp Bootstrap Protocol Client [36,WJC2] bootpc 68/udp Bootstrap Protocol Client [36,WJC2] tftp 69/tcp Trivial File Transfer [126,DDC1] tftp 69/udp Trivial File Transfer [126,DDC1] gopher 70/tcp Gopher [MXC1] gopher 70/udp Gopher [MXC1] netrjs-1 71/tcp Remote Job Service [10,RTB3] netrjs-1 71/udp Remote Job Service [10,RTB3] netrjs-2 72/tcp Remote Job Service [10,RTB3] netrjs-2 72/udp Remote Job Service [10,RTB3] netrjs-3 73/tcp Remote Job Service [10,RTB3] netrjs-3 73/udp Remote Job Service [10,RTB3] netrjs-4 74/tcp Remote Job Service [10,RTB3] netrjs-4 74/udp Remote Job Service [10,RTB3] priv-dial 75/tcp any private dial out service [JBP] priv-dial 75/udp any private dial out service [JBP] deos 76/tcp Distributed External Object Store deos 76/udp Distributed External Object Store netrjs 77/tcp priv-rje 77/tcp any private RJE service [JBP] priv-rje 77/udp any private RJE service [JBP] vettcp 78/tcp vettcp [CXL1] vettcp 78/udp vettcp [CXL1] finger 79/tcp Finger [52,KLH] finger 79/udp Finger [52,KLH] http 80/tcp www www-http World Wide Web HTTP http 80/udp www www-http World Wide Web HTTP www 80/tcp World Wide Web HTTP [TXL] www 80/udp World Wide Web HTTP [TXL] hosts2-ns 81/tcp HOSTS2 Name Server [EAK1] hosts2-ns 81/udp HOSTS2 Name Server [EAK1] xfer 82/tcp XFER Utility [TXS2] xfer 82/udp XFER Utility [TXS2] mit-ml-dev 83/tcp MIT ML Device [DXR3] mit-ml-dev 83/udp MIT ML Device [DXR3] ctf 84/tcp Common Trace Facility [HXT] ctf 84/udp Common Trace Facility [HXT] mit-ml-dev 85/tcp MIT ML Device [DXR3] mit-ml-dev 85/udp MIT ML Device [DXR3] mfcobol 86/tcp Micro Focus Cobol [SXE] mfcobol 86/udp Micro Focus Cobol [SXE] priv-term-l 87/tcp any private terminal link [JBP] priv-term-l 87/udp any private terminal link [JBP] ttylink 87/tcp kerberos 88/tcp Kerberos [BCN] kerberos 88/udp Kerberos [BCN] su-mit-tg 89/tcp SU/MIT Telnet Gateway [MRC] su-mit-tg 89/udp SU/MIT Telnet Gateway [MRC] dnsix 90/tcp DNSIX Securit Attribute Token Map [CXW1] dnsix 90/udp DNSIX Securit Attribute Token Map [CXW1] mit-dov 91/tcp MIT Dover Spooler [EBM] mit-dov 91/udp MIT Dover Spooler [EBM] npp 92/tcp Network Printing Protocol [LXM] npp 92/udp Network Printing Protocol [LXM] dcp 93/tcp Device Control Protocol [DT15] dcp 93/udp Device Control Protocol [DT15] objcall 94/tcp Tivoli Object Dispatcher [TXB1] objcall 94/udp Tivoli Object Dispatcher [TXB1] supdup 95/tcp SUPDUP [27,MRC] supdup 95/udp SUPDUP [27,MRC] dixie 96/tcp DIXIE Protocol Specification [TXH1] dixie 96/udp DIXIE Protocol Specification [TXH1] swift-rvf 97/tcp Swift Remote Vitural File Protocol [MXR] swift-rvf 97/udp Swift Remote Vitural File Protocol [MXR] tacnews 98/tcp TAC News [ANM2] tacnews 98/udp TAC News [ANM2] metagram 99/tcp Metagram Relay [GEOF] metagram 99/udp Metagram Relay [GEOF] newacct 100/tcp [unauthorized use] hostname 101/tcp hostnames NIC Host Name Server hostname 101/udp hostnames NIC Host Name Server iso-tsap 102/tcp tsap ISO-TSAP Class 0 iso-tsap 102/udp tsap ISO-TSAP Class 0 gppitnp 103/tcp Genesis Point-to-Point Trans Net [PXM1] gppitnp 103/udp Genesis Point-to-Point Trans Net [PXM1] x400 103/tcp ISO Mail acr-nema 104/tcp ACR-NEMA Digital Imag. & Comm. 300 [PXM1] acr-nema 104/udp ACR-NEMA Digital Imag. & Comm. 300 [PXM1] x400-snd 104/tcp ISO Mail csnet-ns 105/tcp Mailbox Name Nameserver [127,MS56] csnet-ns 105/udp Mailbox Name Nameserver [127,MS56] 3com-tsmux 106/tcp 3COM-TSMUX [JXS5] 3com-tsmux 106/udp 3COM-TSMUX [JXS5] rtelnet 107/tcp Remote Telnet Service [101,JBP] rtelnet 107/udp Remote Telnet Service [101,JBP] snagas 108/tcp SNA Gateway Access Server [KXM] snagas 108/udp SNA Gateway Access Server [KXM] pop2 109/tcp postoffice Post Office Protocol - Version 2 pop2 109/udp postoffice Post Office Protocol - Version 2 pop3 110/tcp Post Office Protocol - Version 3 [122,MTR] pop3 110/udp Post Office Protocol - Version 3 [122,MTR] sunrpc 111/tcp rpcbind SUN Remote Procedure Call sunrpc 111/udp rpcbind SUN Remote Procedure Call mcidas 112/tcp McIDAS Data Transmission Protocol [GXD] mcidas 112/udp McIDAS Data Transmission Protocol [GXD] auth 113/tcp Authentication Service [130,MCSJ] auth 113/udp Authentication Service [130,MCSJ] audionews 114/tcp Audio News Multicast [MXF2] audionews 114/udp Audio News Multicast [MXF2] sftp 115/tcp Simple File Transfer Protocol [73,MKL1] sftp 115/udp Simple File Transfer Protocol [73,MKL1] ansanotify 116/tcp ANSA REX Notify [NXH] ansanotify 116/udp ANSA REX Notify [NXH] uucp-path 117/tcp UUCP Path Service [44,MAE] uucp-path 117/udp UUCP Path Service [44,MAE] sqlserv 118/tcp SQL Services [LXB3] sqlserv 118/udp SQL Services [LXB3] nntp 119/tcp Network News Transfer Protocol [65,PL4] nntp 119/udp Network News Transfer Protocol [65,PL4] cfdptkt 120/tcp CFDPTKT [JXO3] cfdptkt 120/udp CFDPTKT [JXO3] erpc 121/tcp Encore Expedited Remote Pro.Call [132,JXO] erpc 121/udp Encore Expedited Remote Pro.Call [132,JXO] smakynet 122/tcp SMAKYNET [MXO] smakynet 122/udp SMAKYNET [MXO] ntp 123/tcp Network Time Protocol [80,DLM1] ntp 123/udp Network Time Protocol [80,DLM1] ansatrader 124/tcp ANSA REX Trader [NXH] ansatrader 124/udp ANSA REX Trader [NXH] locus-map 125/tcp Locus PC-Interface Net Map Ser [137,EP53] locus-map 125/udp Locus PC-Interface Net Map Ser [137,EP53] unitary 126/tcp Unisys Unitary Login [FEIL] unitary 126/udp Unisys Unitary Login [FEIL] locus-con 127/tcp Locus PC-Interface Conn Server [137,EP53] locus-con 127/udp Locus PC-Interface Conn Server [137,EP53] gss-xlicen 128/tcp GSS X License Verification [JXL] gss-xlicen 128/udp GSS X License Verification [JXL] pwdgen 129/tcp Password Generator Protocol [141,FJW] pwdgen 129/udp Password Generator Protocol [141,FJW] cisco-fna 130/tcp cisco FNATIVE [WXB] cisco-fna 130/udp cisco FNATIVE [WXB] cisco-tna 131/tcp cisco TNATIVE [WXB] cisco-tna 131/udp cisco TNATIVE [WXB] cisco-sys 132/tcp cisco SYSMAINT [WXB] cisco-sys 132/udp cisco SYSMAINT [WXB] statsrv 133/tcp Statistics Service [DLM1] statsrv 133/udp Statistics Service [DLM1] ingres-net 134/tcp INGRES-NET Service [MXB] ingres-net 134/udp INGRES-NET Service [MXB] loc-srv 135/tcp Location Service [JXP] loc-srv 135/udp Location Service [JXP] profile 136/tcp PROFILE Naming System [LLP] profile 136/udp PROFILE Naming System [LLP] netbios-ns 137/tcp NETBIOS Name Service [JBP] netbios-ns 137/udp NETBIOS Name Service [JBP] netbios-dgm 138/tcp NETBIOS Datagram Service [JBP] netbios-dgm 138/udp NETBIOS Datagram Service [JBP] netbios-ssn 139/tcp NETBIOS Session Service [JBP] netbios-ssn 139/udp NETBIOS Session Service [JBP] emfis-data 140/tcp EMFIS Data Service [GB7] emfis-data 140/udp EMFIS Data Service [GB7] emfis-cntl 141/tcp EMFIS Control Service [GB7] emfis-cntl 141/udp EMFIS Control Service [GB7] bl-idm 142/tcp Britton-Lee IDM [SXS1] bl-idm 142/udp Britton-Lee IDM [SXS1] imap2 143/tcp Interim Mail Access Protocol v2 [MRC] imap2 143/udp Interim Mail Access Protocol v2 [MRC] NeWS 144/tcp Window System NeWS 144/udp Window System news 144/tcp NewS window system [JAG] news 144/udp NewS window system [JAG] uaac 145/tcp UAAC Protocol [DAG4] uaac 145/udp UAAC Protocol [DAG4] iso-tp0 146/tcp ISO-IP0 [86,MTR] iso-tp0 146/udp ISO-IP0 [86,MTR] iso-ip 147/tcp ISO-IP [MTR] iso-ip 147/udp ISO-IP [MTR] cronus 148/tcp CRONUS-SUPPORT [135,JXB] cronus 148/udp CRONUS-SUPPORT [135,JXB] aed-512 149/tcp AED 512 Emulation Service [AXB] aed-512 149/udp AED 512 Emulation Service [AXB] sql-net 150/tcp SQL-NET [MXP] sql-net 150/udp SQL-NET [MXP] hems 151/tcp HEMS [87,CXT] hems 151/udp HEMS [87,CXT] bftp 152/tcp Background File Transfer Program [AD14] bftp 152/udp Background File Transfer Program [AD14] sgmp 153/tcp SGMP [37,MS9] sgmp 153/udp SGMP [37,MS9] netsc-prod 154/tcp NETSC [SH37] netsc-prod 154/udp NETSC [SH37] netsc-dev 155/tcp NETSC [SH37] netsc-dev 155/udp NETSC [SH37] sqlsrv 156/tcp SQL Service [CMR] sqlsrv 156/udp SQL Service [CMR] knet-cmp 157/tcp KNET/VM Command/Message Protocol[77,GSM11] knet-cmp 157/udp KNET/VM Command/Message Protocol[77,GSM11] pcmail-srv 158/tcp PCMail Server [19,MXL] pcmail-srv 158/udp PCMail Server [19,MXL] nss-routing 159/tcp NSS-Routing [JXR] nss-routing 159/udp NSS-Routing [JXR] sgmp-traps 160/tcp SGMP-TRAPS [37,MS9] sgmp-traps 160/udp SGMP-TRAPS [37,MS9] snmp 161/tcp SNMP [15,MTR] snmp 161/udp SNMP [15,MTR] snmptrap 162/tcp SNMPTRAP [15,MTR] snmptrap 162/udp SNMPTRAP [15,MTR] cmip-man 163/tcp CMIP/TCP Manager [4,AXB1] cmip-man 163/udp CMIP/TCP Manager [4,AXB1] cmip-agent 164/tcp CMIP/TCP Agent smip-agent 164/udp CMIP/TCP Agent xns-courier 165/tcp Xerox 144,SXA] xns-courier 165/udp Xerox [144,SXA] s-net 166/tcp Sirius Systems [BXL] s-net 166/udp Sirius Systems [BXL] namp 167/tcp NAMP [MS9] namp 167/udp NAMP [MS9] rsvd 168/tcp RSVD [NT12] rsvd 168/udp RSVD [NT12] send 169/tcp SEND [WDW11] send 169/udp SEND [WDW11] print-srv 170/tcp Network PostScript [BKR] print-srv 170/udp Network PostScript [BKR] multiplex 171/tcp Network Innovations Multiplex [KXD] multiplex 171/udp Network Innovations Multiplex [KXD] cl/1 172/tcp Network Innovations CL/1 [KXD] cl/1 172/udp Network Innovations CL/1 [KXD] xyplex-mux 173/tcp Xyplex [BXS] xyplex-mux 173/udp Xyplex [BXS] mailq 174/tcp MAILQ [RXZ] mailq 174/udp MAILQ [RXZ] vmnet 175/tcp VMNET [CXT] vmnet 175/udp VMNET [CXT] genrad-mux 176/tcp GENRAD-MUX [RXT] genrad-mux 176/udp GENRAD-MUX [RXT] xdmcp 177/tcp X Display Manager Control Protocol [RWS4] xdmcp 177/udp X Display Manager Control Protocol [RWS4] NextStep 178/udp nextstep NeXTStep NextStep Window Server nextstep 178/tcp NextStep NeXTStep NextStep Window Server bgp 179/tcp Border Gateway Protocol [KSL] bgp 179/udp Border Gateway Protocol [KSL] ris 180/tcp Intergraph [DXB] ris 180/udp Intergraph [DXB] unify 181/tcp Unify [VXS] unify 181/udp Unify [VXS] audit 182/tcp Unisys Audit SITP [GXG] audit 182/udp Unisys Audit SITP [GXG] ocbinder 183/tcp OCBinder [JXO1] ocbinder 183/udp OCBinder [JXO1] ocserver 184/tcp OCServer [JXO1] ocserver 184/udp OCServer [JXO1] remote-kis 185/tcp Remote-KIS [RXD1] remote-kis 185/udp Remote-KIS [RXD1] kis 186/tcp KIS Protocol [RXD1] kis 186/udp KIS Protocol [RXD1] aci 187/tcp Application Communication Interface [RXC1] aci 187/udp Application Communication Interface [RXC1] mumps 188/tcp Plus Five''s MUMPS [HS23] mumps 188/udp Plus Five''s MUMPS [HS23] qft 189/tcp Queued File Transport [WXS] qft 189/udp Queued File Transport [WXS] cacp 190/udp Gateway Access Control Protocol gacp 190/tcp Gateway Access Control Protocol prospero 191/tcp Prospero Directory Service prospero 191/udp Prospero Directory Service osu-nms 192/tcp OSU Network Monitoring System [DXK] osu-nms 192/udp OSU Network Monitoring System [DXK] srmp 193/tcp Spider Remote Monitoring Protocol [TXS] srmp 193/udp Spider Remote Monitoring Protocol [TXS] irc 194/tcp Internet Relay Chat Protocol [JXO2] irc 194/udp Internet Relay Chat Protocol [JXO2] dn6-nlm-aud 195/tcp DNSIX Network Level Module Audit [LL69] dn6-nlm-aud 195/udp DNSIX Network Level Module Audit [LL69] dn6-smm-red 196/tcp DNSIX Session Mgt Module Audit Redir[LL69] dn6-smm-red 196/udp DNSIX Session Mgt Module Audit Redir[LL69] dls 197/tcp Directory Location Service [SXB] dls 197/udp Directory Location Service [SXB] dls-mon 198/tcp Directory Location Service Monitor [SXB] dls-mon 198/udp Directory Location Service Monitor [SXB] smux 199/tcp SMUX [MTR] smux 199/udp SMUX [MTR] src 200/tcp IBM System Resource Controller [GXM] src 200/udp IBM System Resource Controller [GXM] at-rtmp 201/tcp AppleTalk Routing Maintenance [RXC] at-rtmp 201/udp AppleTalk Routing Maintenance [RXC] at-nbp 202/tcp AppleTalk Name Binding [RXC] at-nbp 202/udp AppleTalk Name Binding [RXC] at-3 203/tcp AppleTalk Unused [RXC] at-3 203/udp AppleTalk Unused [RXC] at-echo 204/tcp AppleTalk Echo [RXC] at-echo 204/udp AppleTalk Echo [RXC] at-5 205/tcp AppleTalk Unused [RXC] at-5 205/udp AppleTalk Unused [RXC] at-zis 206/tcp AppleTalk Zone Information [RXC] at-zis 206/udp AppleTalk Zone Information [RXC] at-7 207/tcp AppleTalk Unused [RXC] at-7 207/udp AppleTalk Unused [RXC] at-8 208/tcp AppleTalk Unused [RXC] at-8 208/udp AppleTalk Unused [RXC] tam 209/tcp Trivial Authenticated Mail Protocol [DXB1] tam 209/udp Trivial Authenticated Mail Protocol [DXB1] z39.50 210/tcp ANSI Z39.50 [MXN] z39.50 210/udp ANSI Z39.50 [MXN] 914c/g 211/tcp Texas Instruments 914C/G Terminal [BXH1] 914c/g 211/udp Texas Instruments 914C/G Terminal [BXH1] anet 212/tcp ATEXSSTR [JXT] anet 212/udp ATEXSSTR [JXT] ipx 213/tcp IPX [DP666] ipx 213/udp IPX [DP666] vmpwscs 214/tcp VM PWSCS [DXS] vmpwscs 214/udp VM PWSCS [DXS] softpc 215/tcp Insignia Solutions [MXT] softpc 215/udp Insignia Solutions [MXT] atls 216/tcp Access Technology License Server [LXD] atls 216/udp Access Technology License Server [LXD] dbase 217/tcp dBASE Unix [DXG1] dbase 217/udp dBASE Unix [DXG1] mpp 218/tcp Netix Message Posting Protocol [STY] mpp 218/udp Netix Message Posting Protocol [STY] uarps 219/tcp Unisys ARPs [AXM1] uarps 219/udp Unisys ARPs [AXM1] imap3 220/tcp Interactive Mail Access Protocol v3 [JXR2] imap3 220/udp Interactive Mail Access Protocol v3 [JXR2] fln-spx 221/tcp Berkeley rlogind with SPX auth [KXA] fln-spx 221/udp Berkeley rlogind with SPX auth [KXA] fsh-spx 222/tcp Berkeley rshd with SPX auth [KXA] fsh-spx 222/udp Berkeley rshd with SPX auth [KXA] rsh-spx 222/tcp Berkeley rshd with SPX auth rsh-spx 222/udp Berkeley rshd with SPX auth cdc 223/tcp Certificate Distribution Center [KXA] cdc 223/udp Certificate Distribution Center [KXA] sur-meas 243/tcp Survey Measurement [6,DDC1] sur-meas 243/udp Survey Measurement [6,DDC1] link 245/tcp LINK [1,RDB2] link 245/udp LINK [1,RDB2] dsp3270 246/tcp Display Systems Protocol [39,WJS1] dsp3270 246/udp Display Systems Protocol [39,WJS1] pdap 344/tcp Prospero Data Access Protocol pdap 344/udp Prospero Data Access Protocol pawserv 345/tcp Perf Analysis Workbench pawserv 345/udp Perf Analysis Workbench zserv 346/tcp Zebra server zserv 346/udp Zebra server fatserv 347/tcp Fatmen Server fatserv 347/udp Fatmen Server csi-sgwp 348/tcp Cabletron Management Protocol csi-sgwp 348/udp Cabletron Management Protocol clearcase 371/tcp Clearcase [DXL1] clearcase 371/udp Clearcase [DXL1] ulistserv 372/tcp Unix Listserv [AXK] ulistserv 372/udp Unix Listserv [AXK] legent-1 373/tcp Legent Corporation [KXB] legent-1 373/udp Legent Corporation [KXB] legent-2 374/tcp Legent Corporation [KXB] legent-2 374/udp Legent Corporation [KXB] hassle 375/tcp hassle 375/udp nip 376/tcp Amiga Envoy Network Inquiry Proto nip 376/udp Amiga Envoy Network Inquiry Proto tnETOS 377/tcp NEC Corporation tnETOS 377/udp NEC Corporation dsETOS 378/tcp NEC Corporation dsETOS 378/udp NEC Corporation is99c 379/tcp TIA/EIA/IS-99 modem client is99c 379/udp TIA/EIA/IS-99 modem client is99s 380/tcp TIA/EIA/IS-99 modem server is99s 380/udp TIA/EIA/IS-99 modem server hp-collector 381/tcp hp performance data collector hp-collector 381/udp hp performance data collector hp-managed-node 382/tcp hp performance data managed node hp-managed-node 382/udp hp performance data managed node hp-alarm-mgr 383/tcp hp performance data alarm manager hp-alarm-mgr 383/udp hp performance data alarm manager arns 384/tcp A Remote Network Server System arns 384/udp A Remote Network Server System ibm-app 385/tcp IBM Application asa 386/tcp ASA Message Router Object Def. asa 386/udp ASA Message Router Object Def. aurp 387/tcp Appletalk Update-Based Routing Pro. aurp 387/udp Appletalk Update-Based Routing Pro. unidata-ldm 388/tcp Unidata LDM Version 4 unidata-ldm 388/udp Unidata LDM Version 4 ldap 389/tcp Lightweight Directory Access Protocol ldap 389/udp Lightweight Directory Access Protocol entrustclient 389/tcp Entrustclient - NorTel DES auth network see 709/tcp uis 390/tcp uis 390/udp synotics-relay 391/tcp SynOptics SNMP Relay Port synotics-relay 391/udp SynOptics SNMP Relay Port synotics-broker 392/tcp SynOptics Port Broker Port synotics-broker 392/udp SynOptics Port Broker Port dis 393/tcp Data Interpretation System dis 393/udp Data Interpretation System embl-ndt 394/tcp EMBL Nucleic Data Transfer embl-ndt 394/udp EMBL Nucleic Data Transfer netcp 395/tcp NETscout Control Protocol netcp 395/udp NETscout Control Protocol netware-ip 396/tcp Novell Netware over IP netware-ip 396/udp Novell Netware over IP mptn 397/tcp Multi Protocol Trans. Net. mptn 397/udp Multi Protocol Trans. Net. kryptolan 398/tcp kryptolan 398/udp iso-tsap-c2 399/tcp ISO-TSAP Class 2 iso-tsap-c2 399/udp ISO-TSAP Class 2 work-sol 400/tcp Workstation Solutions work-sol 400/udp Workstation Solutions ups 401/tcp Uninterruptible Power Supply ups 401/udp Uninterruptible Power Supply genie 402/tcp Genie Protocol genie 402/udp Genie Protocol decap 403/tcp decap 403/udp nced 404/tcp nced 404/udp ncld 405/tcp ncld 405/udp imsp 406/tcp Interactive Mail Support Protocol imsp 406/udp Interactive Mail Support Protocol timbuktu 407/tcp timbuktu 407/udp prm-sm 408/tcp Prospero Resource Manager Sys. Man. prm-sm 408/udp Prospero Resource Manager Sys. Man. prm-nm 409/tcp Prospero Resource Manager Node Man. prm-nm 409/udp Prospero Resource Manager Node Man. decladebug 410/tcp DECLadebug Remote Debug Protocol decladebug 410/udp DECLadebug Remote Debug Protocol rmt 411/tcp Remote MT Protocol rmt 411/udp Remote MT Protocol synoptics-trap 412/tcp Trap Convention Port synoptics-trap 412/udp Trap Convention Port smsp 413/tcp smsp 413/udp infoseek 414/tcp infoseek 414/udp bnet 415/tcp bnet 415/udp silverplatter 416/tcp silverplatter 416/udp onmux 417/tcp onmux 417/udp hyper-g 418/tcp hyper-g 418/udp ariel1 419/tcp ariel1 419/udp smpte 420/tcp smpte 420/udp ariel2 421/tcp ariel2 421/udp ariel3 422/tcp ariel3 422/udp opc-job-start 423/tcp IBM Operations Planning and Control Start opc-job-start 423/udp IBM Operations Planning and Control Start opc-job-track 424/tcp IBM Operations Planning and Control Track opc-job-track 424/udp IBM Operations Planning and Control Track icad-el 425/tcp icad-el 425/udp smartsdp 426/tcp smartsdp 426/udp svrloc 427/tcp Server Location svrloc 427/udp Server Location ocs_cmu 428/tcp ocs_cmu 428/udp ocs_amu 429/tcp ocs_amu 429/udp utmpsd 430/tcp utmpsd 430/udp utmpcd 431/tcp utmpcd 431/udp iasd 432/tcp iasd 432/udp nnsp 433/tcp nnsp 433/udp mobileip-agent 434/tcp mobileip-agent 434/udp mobilip-mn 435/tcp mobilip-mn 435/udp dna-cml 436/tcp dna-cml 436/udp comscm 437/tcp comscm 437/udp dsfgw 438/tcp dsfgw 438/udp dasp 439/tcp dasp 439/udp sgcp 440/tcp sgcp 440/udp decvms-sysmgt 441/tcp decvms-sysmgt 441/udp cvc_hostd 442/tcp cvc_hostd 442/udp https 443/tcp encrypted http server (SSL - RSA,rc4/des) snpp 444/tcp Simple Network Paging Protocol snpp 444/udp Simple Network Paging Protocol microsoft-ds 445/tcp microsoft-ds 445/udp ddm-rdb 446/tcp ddm-rdb 446/udp ddm-dfm 447/tcp ddm-dfm 447/udp ddm-byte 448/tcp ddm-byte 448/udp as-servermap 449/tcp AS Server Mapper as-servermap 449/udp AS Server Mapper tserver 450/tcp tserver 450/udp sfs-smp-net 451/tcp Cray Network Semaphore server sfs-smp-net 451/udp Cray Network Semaphore server sfs-config 452/tcp Cray SFS config server sfs-config 452/udp Cray SFS config server creativeserver 453/tcp CreativeServer creativeserver 453/udp CreativeServer contentserver 454/tcp ContentServer contentserver 454/udp ContentServer creativepartnr 455/tcp CreativePartnr creativepartnr 455/udp CreativePartnr macon-tcp 456/tcp macon-udp 456/udp scohelp 457/tcp scohelp 457/udp appleqtc 458/tcp apple quick time appleqtc 458/udp apple quick time ampr-rcmd 459/tcp ampr-rcmd 459/udp skronk 460/tcp skronk 460/udp datasurfsrv 461/tcp datasurfsrv 461/udp datasurfsrvsec 462/tcp datasurfsrvsec 462/udp alpes 463/tcp alpes 463/udp biff 512/udp comsat used by mail system to notify users exec 512/tcp remote process execution; login 513/tcp remote login a la telnet; who 513/udp whod maintains data bases showing who''s cmd 514/tcp shell like exec, but automatic shell 514/tcp rlogin style exec (rshd) syslog 514/udp printer 515/tcp spooler (lpd) printer 515/udp spooler (lpd) talk 517/tcp like tenex link, but across talk 517/udp like tenex link, but across ntalk 518/tcp (talkd) ntalk 518/udp (talkd) utime 519/tcp unixtime utime 519/udp unixtime efs 520/tcp extended file name server router 520/udp local routing process (on site); uses variant of Xerox timed 525/tcp timeserver timed 525/udp timeserver tempo 526/tcp newdate tempo 526/udp newdate courier 530/tcp rpc courier 530/udp rpc conference 531/tcp chat conference 531/udp chat netnews 532/tcp readnews netnews 532/udp readnews netwall 533/tcp for emergency broadcasts netwall 533/udp for emergency broadcasts apertus-ldp 539/tcp Apertus Technologies Load Determination apertus-ldp 539/udp Apertus Technologies Load Determination uucp 540/tcp uucpd uucp 540/udp uucpd uucp-rlogin 541/tcp uucp-rlogin 541/udp klogin 543/tcp Kerberos (v4/v5) klogin 543/udp Kerberos (v4/v5) kshell 544/tcp krcmd Kerberos (v4/v5) kshell 544/udp krcmd Kerberos (v4/v5) appleqtcsrvr 545/tcp appleqtcsrvr 545/udp new-rwho 550/tcp new-who new-rwho 550/udp new-who cybercash 551/tcp cybercash 551/udp deviceshare 552/tcp deviceshare 552/udp pirp 553/tcp pirp 553/udp dsf 555/tcp dsf 555/udp remotefs 556/tcp rfs rfs_server Brunhoff remote filesystem remotefs 556/udp rfs rfs_server Brunhoff remote filesystem openvms-sysipc 557/tcp openvms-sysipc 557/udp sdnskmp 558/tcp sdnskmp 558/udp teedtap 559/tcp teedtap 559/udp rmonitor 560/tcp rmonitord rmonitor 560/udp rmonitord monitor 561/tcp monitor 561/udp chshell 562/tcp chcmd chshell 562/udp chcmd snews 563/tcp snews 563/udp 9pfs 564/tcp plan 9 file service 9pfs 564/udp plan 9 file service whoami 565/tcp whoami whoami 565/udp whoami meter 570/tcp demon meter 570/udp demon meter 571/tcp udemon meter 571/udp udemon umeter 571/tcp udemon umeter 571/udp udemon ipcserver 600/tcp Sun IPC server ipcserver 600/udp Sun IPC server pcserver 600/tcp ECD Integrated PC board srvr urm 606/tcp Cray Unified Resource Manager urm 606/udp Cray Unified Resource Manager nqs 607/tcp nqs nqs 607/udp nqs sift-uft 608/tcp Sender-Initiated/Unsolicited File Transfer sift-uft 608/udp Sender-Initiated/Unsolicited File Transfer npmp-trap 609/tcp npmp-trap 609/udp npmp-local 610/tcp npmp-local 610/udp npmp-gui 611/tcp npmp-gui 611/udp ginad 634/tcp ginad 634/udp mount 635/udp NFS Mount Service pcnfs 640/udp PC-NFS DOS Authentication bwnfs 650/udp BW-NFS DOS Authentication doom 666/tcp doom Id Software doom 666/udp doom Id Software mdqs 666/tcp mdqs 666/udp elcsd 704/tcp errlog copy/server daemon elcsd 704/udp errlog copy/server daemon entrustmanager 709/tcp EntrustManager - NorTel DES auth network see 389/tcp entrustmanager 709/udp EntrustManager - NorTel DES auth network see 389/tcp netviewdm1 729/tcp IBM NetView DM/6000 Server/Client netviewdm1 729/udp IBM NetView DM/6000 Server/Client netviewdm2 730/tcp IBM NetView DM/6000 send/tcp netviewdm2 730/udp IBM NetView DM/6000 send/tcp netviewdm3 731/tcp IBM NetView DM/6000 receive/tcp netviewdm3 731/udp IBM NetView DM/6000 receive/tcp netcp 740/tcp NETscout Control Protocol [AXS2] netcp 740/udp NETscout Control Protocol [AXS2] netgw 741/tcp netGW [OXK] netgw 741/udp netGW [OXK] netrcs 742/tcp Network based Rev. Cont. Sys. [GXC2] netrcs 742/udp Network based Rev. Cont. Sys. [GXC2] flexlm 744/tcp Flexible License Manager [MXC2] flexlm 744/udp Flexible License Manager [MXC2] fujitsu-dev 747/tcp Fujitsu Device Control fujitsu-dev 747/udp Fujitsu Device Control ris-cm 748/tcp Russell Info Sci Calendar Manager ris-cm 748/udp Russell Info Sci Calendar Manager kerberos-adm 749/tcp kerberos administration kerberos-adm 749/udp kerberos administration kerberos 750/tcp kdc Kerberos (v4) kerberos 750/udp kdc Kerberos (v4) loadav 750/udp rfile 750/tcp kerberos_master 751/tcp Kerberos `kadmin'' (v4) kerberos_master 751/udp Kerberos `kadmin'' (v4) pump 751/tcp pump 751/udp qrh 752/tcp qrh 752/udp rrh 753/tcp rrh 753/udp tell 754/tcp send tell 754/udp send nlogin 758/tcp nlogin 758/udp con 759/tcp con 759/udp krbupdate 760/tcp kreg Kerberos (v4) registration ns 760/tcp ns 760/udp kpasswd 761/tcp kpwd Kerberos (v4) "passwd" rxe 761/tcp rxe 761/udp quotad 762/tcp quotad 762/udp cycleserv 763/tcp cycleserv 763/udp omserv 764/tcp omserv 764/udp webster 765/tcp webster 765/udp phonebook 767/tcp phone phonebook 767/udp phone vid 769/tcp vid 769/udp cadlock 770/tcp cadlock 770/udp rtip 771/tcp rtip 771/udp cycleserv2 772/tcp cycleserv2 772/udp notify 773/udp submit 773/tcp acmaint_dbd 774/udp rpasswd 774/tcp acmaint_transd 775/udp entomb 775/tcp wpages 776/tcp wpages 776/udp wpgs 780/tcp wpgs 780/udp hp-collector 781/tcp hp performance data collector hp-collector 781/udp hp performance data collector hp-managed-node 782/tcp hp performance data managed node hp-managed-node 782/udp hp performance data managed node hp-alarm-mgr 783/tcp hp performance data alarm manager hp-alarm-mgr 783/udp hp p