Cisco 700 - Manual (Page 85)

Specifications A-5
Table A-5 Currently Assigned TCP and UDP Port Numbers
Port Keyword Description
0 – Reserved
1–4 – Unassigned
5 RJE Remote Job Entry
7 ECHO Echo
9 DISCARD Discard
11 USERS Active users
13 DAYTIME Daytime
15 NETSTAT Who is up or NETSTAT
17 QUOTE Quote of the Day
19 CHARGEN Character Generator
20 FTP-DATA File Transfer Protocol (data)
21 FTP File Transfer Protocol
23 TELNET Terminal connection
25 SMTP Simple Mail Transport Protocol
37 TIME Time
39 RLP Resource Location Protocol
42 NAMESERVER Host Name Server
43 NICNAME Who is
49 LOGIN Login Host Protocol
53 DOMAIN Domain Name Service
67 BOOTPS Bootstrap Protocol Server
68 BOOTPC Bootstrap Protocol Client
69 TFTP Trivial File Transfer Protocol
75 – Any private dial-out service
77 – Any private RJE service
79 FINGER Finger