DI-304/DI-304M ISDN Remote Router
Appendix C – IP Protocol and Port Numbers
Common Internet service protocols and IP port numbers.
IP Protocol Numbers
Protocol # | Protocol Name | Description |
1 | ICMP | Internet Control Message [RFC792] |
2 | IGMP | Internet Group Management [RFC1112] |
|
|
|
6 | TCP | Transmission Control [RFC793] |
8 | EGP | Exterior Gateway Protocol [RFC888,DLM1] |
9 | IGP | any private interior gateway [IANA] |
|
| (used by Cisco for their IGRP) |
17 | UDP | User Datagram [RFC768,JBP] |
46 | RSVP | Reservation Protocol [Bob Braden] |
88 | EIGRP | EIGRP [CISCO,GXS] |
115 | L2TP | Layer Two Tunneling Protocol [Aboba] |
IP Port Numbers
Service | TCP | UDP | Notes |
FTP | 21 |
| File Transfer |
Telnet | 23 |
|
|
SMTP | 25 |
| Simple Mail Transfer |
DNS | 53 | 53 | Domain Name Server |
Finger | 79 |
|
|
WWWHTTP | 80 |
| World Wide Web HTTP |
POP3 | 110 |
| Post Office Protocol – Version 3 |
| 137 | 137 | NetBios Name Service |
| 138 | 138 | NetBios Datagram Service |
| 139 | 139 | NetBios Session Service |
SNMP |
| 161 |
|
SNMP Trap |
| 162 |
|
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