Whether you are creating pattern filters to restrict or control traffic through an Orbitor, or whether you are adding new designated
servers in the Orbitor's NetSAFE firewall, this table of TCP and UDP port assignments will be of value to you.
This table presents a subset of the "well-known" ports used in most IP-based application services. These assignments are documented and
controlled by the IETF.
| Service |
Port |
Protocol |
Description |
| ftp-data |
20 |
TCP |
File Transfer Protocol (FTP) (default data) |
| ftp |
21 |
TCP |
FTP (control) |
| telnet |
23 |
TCP |
Telnet |
| smtp |
25 |
TCP |
Simple Mail Transfer Protocol (SMTP) (email) |
| nicname |
43 |
TCP |
whois Internet directory service |
| nicname |
43 |
UDP |
whois Internet directory service |
| domain |
53 |
TCP |
Domain Name System (DNS) |
| domain |
53 |
UDP |
DNS |
| tftp |
69 |
UDP |
Trivial File Transfer Protocol (TFTP) |
| gopher |
70 |
TCP |
Gopher |
| gopher |
70 |
UDP |
Gopher |
| finger |
79 |
TCP |
Finger Protocol |
| finger |
79 |
UDP |
Finger Protocol |
| www-http |
80 |
TCP |
World Wide Web Hypertext Transfer Protocol (HTTP) |
| https |
443 |
TCP |
HTTP with SSL (secure HTTP) |
| kerberos |
88 |
TCP |
Kerberos authentication |
| kerberos |
88 |
UDP |
Kerberos authentication |
| pop3 |
110 |
TCP |
Post Office Protocol (POP) version 3 |
| sunrpc |
111 |
TCP |
SUN Remote Procedure Call (RPC) |
| sunrpc |
111 |
UDP |
SUN RPC |
| auth |
113 |
TCP |
Authentication service |
| auth |
113 |
UDP |
Authentication service |
| nntp |
119 |
TCP |
Network News Transfer Protocol (NNTP) |
| ntp |
123 |
TCP |
Network Time Protocol (NTP) |
| ntp |
123 |
UDP |
NTP |
| snmp |
161 |
TCP |
Simple Network Management Protocol (SNMP) |
| snmp |
161 |
UDP |
SNMP |
| snmptrap |
162 |
TCP |
SNMP system management messages |
| snmptrap |
162 |
UDP |
SNMP system management messages |
| imap3 |
220 |
TCP |
Interactive Mail Access Protocol (IMAP) version 3 |
| imap3 |
220 |
UDP |
IMAP version 3 |
| exec |
512 |
TCP |
Remote process execution |
| login |
513 |
TCP |
Remote login |
| who |
513 |
UDP |
Remote who daemon (rwhod) |
| cmd |
514 |
TCP |
Remote command (rsh) |
| syslog |
514 |
UDP |
System log facility |
| printer |
515 |
TCP |
Line printer daemon (LPD) spooler |
| talk |
517 |
TCP |
Terminal-to-terminal chat |
| talk |
517 |
UDP |
Terminal-to-terminal chat |
| ntalk |
518 |
TCP |
Newer version of Terminal-to-terminal chat |
| router |
520 |
UDP |
Routing Information Protocol (RIP) |
| uucp |
540 |
TCP |
UNIX-to-UNIX Copy Protocol (UUCP) |
| uucp |
540 |
UDP |
UUCP |
| uucp-rlogin |
541 |
TCP |
Variant of UUCP/TCP |
| uucp-rlogin |
541 |
UDP |
Variant of UUCP/IP |
| klogin |
543 |
TCP |
Kerberized login |
| klogin |
543 |
UDP |
Kerberized login |
| pmd |
1642 |
TCP |
PortMaster daemon in.pmd |
| pmconsole |
1643 |
TCP |
PortMaster Console Protocol |
| radius |
1645 |
UDP |
Remote Authentication Dial-In User Service (RADIUS) |
| radacct |
1646 |
UDP |
RADIUS accounting |
| choicenet |
1647 |
UDP |
ChoiceNet |
If you require additional detail on the information presented herein, please consult the IETF web site.
§