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
（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。
端口 功能英文注解 功能中文注解
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 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 performance data alarm manager
concert 786/tcp
concert 786/udp
mdbs_daemon 800/tcp
mdbs_daemon 800/udp
device 801/tcp
device 801/udp
supfilesrv 871/tcp for SUP
accessbuilder 888/tcp
accessbuilder 888/udp
vsinet 996/tcp
vsinet 996/udp
xtreelic 996/tcp XTREE License Server
xtreelic 996/udp XTREE License Server
maitrd 997/tcp
maitrd 997/udp
busboy 998/tcp
puparp 998/udp
applix 999/udp Applix ac
garcon 999/tcp
puprouter 999/tcp
puprouter 999/udp
cadlock 1000/tcp
ock 1000/udp
blackjack 1025/tcp network blackjack
blackjack 1025/udp network blackjack
listen 1025/tcp listener RFS remote_file_sharing
nterm 1026/tcp remote_login network_terminal
iad1 1030/tcp BBN IAD
iad1 1030/udp BBN IAD
iad2 1031/tcp BBN IAD
iad2 1031/udp BBN IAD
iad3 1032/tcp BBN IAD
iad3 1032/udp BBN IAD
nim 1058/tcp
nim 1058/udp
nimreg 1059/tcp
nimreg 1059/udp
instl_boots 1067/tcp Installation Bootstrap Proto. Serv.
instl_boots 1067/udp Installation Bootstrap Proto. Serv.
instl_bootc 1068/tcp Installation Bootstrap Proto. Cli.
instl_bootc 1068/udp Installation Bootstrap Proto. Cli.
socks 1080/tcp
socks 1080/udp
ansoft-lm-1 1083/tcp Anasoft License Manager
ansoft-lm-1 1083/udp Anasoft License Manager
ansoft-lm-2 1084/tcp Anasoft License Manager
ansoft-lm-2 1084/udp Anasoft License Manager
nfsd-keepalive 1110/udp Client status info
nfsd-status 1110/tcp Cluster status info
msql 1112/tcp mini-sql server
supfiledbg 1127/tcp for SUP
nfa 1155/tcp Network File Access
nfa 1155/udp Network File Access
lupa 1212/tcp
lupa 1212/udp
nerv 1222/tcp SNI R&D network
nerv 1222/udp SNI R&D network
msg 1241/tcp remote message server
hermes 1248/tcp
hermes 1248/udp
alta-ana-lm 1346/tcp Alta Analytics License Manager
alta-ana-lm 1346/udp Alta Analytics License Manager
bbn-mmc 1347/tcp multi media conferencing
bbn-mmc 1347/udp multi media conferencing
bbn-mmx 1348/tcp multi media conferencing
bbn-mmx 1348/udp multi media conferencing
sbook 1349/tcp Registration Network Protocol [SXS4]
sbook 1349/udp Registration Network Protocol [SXS4]
editbench 1350/tcp Registration Network Protocol [SXS4]
editbench 1350/udp Registration Network Protocol [SXS4]
equationbuilder 1351/tcp Digital Tool Works (MIT) [TXT1]
equationbuilder 1351/udp Digital Tool Works (MIT) [TXT1]
lotusnote 1352/tcp Lotus Note [GXP1]
lotusnote 1352/udp Lotus Note [GXP1]
relief 1353/tcp Relief Consulting
relief 1353/udp Relief Consulting
rightbrain 1354/tcp RightBrain Software
rightbrain 1354/udp RightBrain Software
intuitive-edge 1355/tcp Intuitive Edge
intuitive-edge 1355/udp Intuitive Edge
cuillamartin 1356/tcp CuillaMartin Company
cuillamartin 1356/udp CuillaMartin Company
pegboard 1357/tcp Electronic PegBoard
pegboard 1357/udp Electronic PegBoard
connlcli 1358/tcp
connlcli 1358/udp
ftsrv 1359/tcp
ftsrv 1359/udp
mimer 1360/tcp
mimer 1360/udp
linx 1361/tcp
linx 1361/udp
timeflies 1362/tcp
timeflies 1362/udp
ndm-requester 1363/tcp Network DataMover Requester
ndm-requester 1363/udp Network DataMover Requester
ndm-server 1364/tcp Network DataMover Server
ndm-server 1364/udp Network DataMover Server
adapt-sna 1365/tcp Network Software Associates
adapt-sna 1365/udp Network Software Associates
netware-csp 1366/tcp Novell NetWare Comm Service Platform
netware-csp 1366/udp Novell NetWare Comm Service Platform
dcs 1367/tcp
dcs 1367/udp
screencast 1368/tcp
screencast 1368/udp
gv-us 1369/tcp GlobalView to Unix Shell
gv-us 1369/udp GlobalView to Unix Shell
us-gv 1370/tcp Unix Shell to GlobalView
us-gv 1370/udp Unix Shell to GlobalView
fc-cli 1371/tcp Fujitsu Config Protocol
fc-cli 1371/udp Fujitsu Config Protocol
fc-ser 1372/tcp Fujitsu Config Protocol
fc-ser 1372/udp Fujitsu Config Protocol
chromagrafx 1373/tcp
chromagrafx 1373/udp
molly 1374/tcp EPI Software Systems
molly 1374/udp EPI Software Systems
bytex 1375/tcp
bytex 1375/udp
ibm-pps 1376/tcp IBM Person to Person Software
ibm-pps 1376/udp IBM Person to Person Software
cichlid 1377/tcp Cichlid License Manager
cichlid 1377/udp Cichlid License Manager
elan 1378/tcp Elan License Manager
elan 1378/udp Elan License Manager
dbreporter 1379/tcp Integrity Solutions
dbreporter 1379/udp Integrity Solutions
telesis-licman 1380/tcp Telesis Network License Manager
telesis-licman 1380/udp Telesis Network License Manager
apple-licman 1381/tcp Apple Network License Manager
apple-licman 1381/udp Apple Network License Manager
gwha 1383/tcp GW Hannaway Network License Manager
gwha 1383/udp GW Hannaway Network License Manager
os-licman 1384/tcp Objective Solutions License Manager
os-licman 1384/udp Objective Solutions License Manager
atex_elmd 1385/tcp Atex Publishing License Manager
atex_elmd 1385/udp Atex Publishing License Manager
checksum 1386/tcp CheckSum License Manager
checksum 1386/udp CheckSum License Manager
cadsi-lm 1387/tcp Computer Aided Design Software Inc LM
cadsi-lm 1387/udp Computer Aided Design Software Inc LM
objective-dbc 1388/tcp Objective Solutions DataBase Cache
objective-dbc 1388/udp Objective Solutions DataBase Cache
iclpv-dm 1389/tcp Document Manager
iclpv-dm 1389/udp Document Manager
iclpv-sc 1390/tcp Storage Controller
iclpv-sc 1390/udp Storage Controller
iclpv-sas 1391/tcp Storage Access Server
iclpv-sas 1391/udp Storage Access Server
iclpv-pm 1392/tcp Print Manager
iclpv-pm 1392/udp Print Manager
iclpv-nls 1393/tcp Network Log Server
iclpv-nls 1393/udp Network Log Server
iclpv-nlc 1394/tcp Network Log Client
iclpv-nlc 1394/udp Network Log Client
iclpv-wsm 1395/tcp PC Workstation Manager software
iclpv-wsm 1395/udp PC Workstation Manager software
dvl-activemail 1396/tcp DVL Active Mail
dvl-activemail 1396/udp DVL Active Mail
audio-activmail 1397/tcp Audio Active Mail
audio-activmail 1397/udp Audio Active Mail
video-activmail 1398/tcp Video Active Mail
video-activmail 1398/udp Video Active Mail
cadkey-licman 1399/tcp Cadkey License Manager
cadkey-licman 1399/udp Cadkey License Manager
cadkey-tablet 1400/tcp Cadkey Tablet Daemon
cadkey-tablet 1400/udp Cadkey Tablet Daemon
goldleaf-licman 1401/tcp Goldleaf License Manager
goldleaf-licman 1401/udp Goldleaf License Manager
prm-sm-np 1402/tcp Prospero Resource Manager
prm-sm-np 1402/udp Prospero Resource Manager
prm-nm-np 1403/tcp Prospero Resource Manager
prm-nm-np 1403/udp Prospero Resource Manager
igi-lm 1404/tcp Infinite Graphics License Manager
igi-lm 1404/udp Infinite Graphics License Manager
ibm-res 1405/tcp IBM Remote Execution Starter
ibm-res 1405/udp IBM Remote Execution Starter
netlabs-lm 1406/tcp NetLabs License Manager
netlabs-lm 1406/udp NetLabs License Manager
dbsa-lm 1407/tcp DBSA License Manager
dbsa-lm 1407/udp DBSA License Manager
sophia-lm 1408/tcp Sophia License Manager
sophia-lm 1408/udp Sophia License Manager
here-lm 1409/tcp Here License Manager
here-lm 1409/udp Here License Manager
hiq 1410/tcp HiQ License Manager
hiq 1410/udp HiQ License Manager
af 1411/tcp AudioFile
af 1411/udp AudioFile
innosys 1412/tcp
innosys 1412/udp
innosys-acl 1413/tcp
innosys-acl 1413/udp
ibm-mqseries 1414/tcp IBM MQSeries
ibm-mqseries 1414/udp IBM MQSeries
dbstar 1415/tcp
dbstar 1415/udp
novell-lu6.2 1416/tcp Novell LU6.2
novell-lu6.2 1416/udp Novell LU6.2
timbuktu-srv1 1417/tcp Timbuktu Service 1 Port
timbuktu-srv2 1418/tcp Timbuktu Service 2 Port
timbuktu-srv2 1418/udp Timbuktu Service 2 Port
timbuktu-srv3 1419/tcp Timbuktu Service 3 Port
timbuktu-srv3 1419/udp Timbuktu Service 3 Port
timbuktu-srv4 1420/tcp Timbuktu Service 4 Port
timbuktu-srv4 1420/udp Timbuktu Service 4 Port
gandalf-lm 1421/tcp Gandalf License Manager
gandalf-lm 1421/udp Gandalf License Manager
autodesk-lm 1422/tcp Autodesk License Manager
autodesk-lm 1422/udp Autodesk License Manager
essbase 1423/tcp Essbase Arbor Software
essbase 1423/udp Essbase Arbor Software
hybrid 1424/tcp Hybrid Encryption Protocol
hybrid 1424/udp Hybrid Encryption Protocol
zion-lm 1425/tcp Zion Software License Manager
zion-lm 1425/udp Zion Software License Manager
sas-1 1426/tcp Satellite-data Acquisition System 1
sas-1 1426/udp Satellite-data Acquisition System 1
mloadd 1427/tcp mloadd monitoring tool
mloadd 1427/udp mloadd monitoring tool
informatik-lm 1428/tcp Informatik License Manager
informatik-lm 1428/udp Informatik License Manager
nms 1429/tcp Hypercom NMS
nms 1429/udp Hypercom NMS
tpdu 1430/tcp Hypercom TPDU
tpdu 1430/udp Hypercom TPDU
rgtp 1431/tcp Reverse Gossip Transport
rgtp 1431/udp Reverse Gossip Transport
blueberry-lm 1432/tcp Blueberry Software License Manager
blueberry-lm 1432/udp Blueberry Software License Manager
ms-sql-s 1433/tcp Microsoft-SQL-Server
ms-sql-s 1433/udp Microsoft-SQL-Server
ms-sql-m 1434/tcp Microsoft-SQL-Monitor
ms-sql-m 1434/udp Microsoft-SQL-Monitor
ibm-cics 1435/tcp
ibm-cics 1435/udp
sas-2 1436/tcp Satellite-data Acquisition System 2
sas-2 1436/udp Satellite-data Acquisition System 2
tabula 1437/tcp
tabula 1437/udp
eicon-server 1438/tcp Eicon Security Agent/Server
eicon-server 1438/udp Eicon Security Agent/Server
eicon-x25 1439/tcp Eicon X25/SNA Gateway
eicon-x25 1439/udp Eicon X25/SNA Gateway
eicon-slp 1440/tcp Eicon Service Location Protocol
eicon-slp 1440/udp Eicon Service Location Protocol
cadis-1 1441/tcp Cadis License Management
cadis-1 1441/udp Cadis License Management
cadis-2 1442/tcp Cadis License Management
cadis-2 1442/udp Cadis License Management
ies-lm 1443/tcp Integrated Engineering Software
ies-lm 1443/udp Integrated Engineering Software
marcam-lm 1444/tcp Marcam License Management
marcam-lm 1444/udp Marcam License Management
proxima-lm 1445/tcp Proxima License Manager
proxima-lm 1445/udp Proxima License Manager
ora-lm 1446/tcp Optical Research A