常用服务及端口
| 服务名称 | 端口号/协议 | 别名 | 说明 |
| echo | 7/tcp | ||
| echo | 7/udp | ||
| discard | 9/tcp | sink null | |
| discard | 9/udp | sink null | |
| systat | 11/tcp | users | #Active users |
| daytime | 13/tcp | ||
| daytime | 13/udp | ||
| qotd | 17/tcp | quote | #Quote of the day |
| qotd | 17/udp | quote | #Quote of the day |
| chargen | 19/tcp | ttytst source | #Character generator |
| chargen | 19/udp | ttytst source | #Character generator |
| ftp-data | 20/tcp | #FTP, data | |
| ftp | 21/tcp | #FTP, control | |
| telnet | 23/tcp | ||
| smtp | 25/tcp | #Simple Mail Transfer Protocol | |
| time | 37/tcp | Timserver | |
| time | 37/udp | Timserver | |
| rlp | 39/udp | resource | #Resource Location Protocol |
| nameserver | 42/tcp | name | #Host Name Server |
| nameserver | 42/udp | name | #Host Name Server |
| nicname | 43/tcp | Whois | |
| domain | 53/tcp | #Domain Name Server | |
| domain | 53/udp | #Domain Name Server | |
| bootps | 67/udp | dhcps | #Bootstrap Protocol Server |
| bootpc | 68/udp | dhcpc | #Bootstrap Protocol Client |
| tftp | 69/udp | #Trivial File Transfer | |
| gopher | 70/tcp | ||
| finger | 79/tcp | ||
| http | 80/tcp | www www-http | #World Wide Web |
| kerberos | 88/tcp | Krb5 kerberos-sec | #Kerberos |
| kerberos | 88/udp | Krb5 kerberos-sec | #Kerberos |
| hostname | 101/tcp | hostnames | #NIC Host Name Server |
| iso-tsap | 102/tcp | #ISO-TSAP Class 0 | |
| rtelnet | 107/tcp | #Remote Telnet Service | |
| pop2 | 109/tcp | postoffice | #Post Office Protocol – Version 2 |
| pop3 | 110/tcp | #Post Office Protocol – Version 3 | |
| sunrpc | 111/tcp | Rpcbind portmap | #SUN Remote Procedure Call |
| sunrpc | 111/udp | Rpcbind portmap | #SUN Remote Procedure Call |
| auth | 113/tcp | Ident tap | #Identification Protocol |
| uucp-path | 117/tcp | ||
| nntp | 119/tcp | usenet | #Network New Transfer Protocol |
| ntp | 123/udp | #Network Time Protocol | |
| epmap | 135/tcp | Loc-srv | #DCE endpoint resolution |
| epmap | 135/udp | Loc-srv | #DCE endpoint resolution |
| netbios-ns | 137/tcp | nbname | #NETBIOS Name Service |
| netbios-ns | 137/udp | nbname | #NETBIOS Name Service |
| netbios-dgm | 138/udp | nbdatagram | #NETBIOS Datagram Service |
| netbios-ssn | 139/tcp | nbsession | #NETBIOS Session Service |
| imap | 143/tcp | imap4 | #Internet Message Access Protocol |
| pcmail-srv | 158/tcp | #PCMail Server | |
| snmp | 161/udp | #SNMP | |
| snmptrap | 162/udp | Snmp-trap | #SNMP trap |
| print-srv | 170/tcp | #Network PostScript | |
| bgp | 179/tcp | #Border Gateway Protocol | |
| irc | 194/tcp | #Internet Relay Chat Protocol | |
| ipx | 213/udp | #IPX over IP | |
| ldap | 389/tcp | #Lightweight Directory Access Protocol | |
| https | 443/tcp | MCom | |
| https | 443/udp | Mcom | |
| microsoft-ds | 445/tcp | ||
| microsoft-ds | 445/udp | ||
| kpasswd | 464/tcp | # Kerberos (v5) | |
| kpasswd | 464/udp | # Kerberos (v5) | |
| isakmp | 500/udp | ike | #Internet Key Exchange |
| exec | 512/tcp | #Remote Process Execution | |
| biff | 512/udp | comsat | |
| login | 513/tcp | #Remote Login | |
| who | 513/udp | whod | |
| cmd | 514/tcp | shell | |
| syslog | 514/udp | ||
| printer | 515/tcp | spooler | |
| talk | 517/udp | ||
| ntalk | 518/udp | ||
| efs | 520/tcp | #Extended File Name Server | |
| router | 520/udp | Route routed | |
| timed | 525/udp | timeserver | |
| tempo | 526/tcp | newdate | |
| courier | 530/tcp | rpc | |
| conference | 531/tcp | chat | |
| netnews | 532/tcp | readnews | |
| netwall | 533/udp | #For emergency broadcasts | |
| uucp | 540/tcp | uucpd | |
| klogin | 543/tcp | #Kerberos login | |
| kshell | 544/tcp | krcmd | #Kerberos remote shell |
| new-rwho | 550/udp | new-who | |
| remotefs | 556/tcp | rfs rfs_server | |
| rmonitor | 560/udp | rmoitord | |
| monitor | 561/udp | ||
| ladps | 636/tcp | sldap | #LDAP over TLS/SSL |
| doom | 666/tcp | #Doom Id Software | |
| doom | 666/udp | #Doom Id Software | |
| kerberos-adm | 749/tcp | #Kerberos administration | |
| kerberos-adm | 749/udp | #Kerberos administration | |
| kerberos-iv | 750/udp | #Kerberos version IV | |
| kpop | 1109/tcp | #Kerberos POP | |
| phone | 1167/udp | #Conference calling | |
| 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 | |
| wins | 1512/tcp | #Microsoft Windows Internet Name Service | |
| wins | 1512/udp | #Microsoft Windows Internet Name Service | |
| ingreslock | 1524/tcp | ingres | |
| 12tp | 1701/udp | #Layer Two Tunneling Protocol | |
| pptp | 1723/tcp | #Point-to-point tunneling protocol | |
| radius | 1812/udp | #RADIUS authentication protocol | |
| radacct | 1813/udp | #RADIUS accounting protocol | |
| nfsd | 2049/udp | nfs | #NFS server |
| knetd | 2053/tcp | #Kerberos de-multiplexor | |
| man | 9535/tcp | #Remote Man Server |
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