User Guide

A-4
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-21881-03
Appendix A Protocol Filters
Table 0-3 IP Port Protocols
Protocol Additional Identifier ISO Designator
TCP port service multiplexer tcpmux 1
echo — 7
discard (9) — 9
systat (11) — 11
daytime (13) — 13
netstat (15) — 15
Quote of the Day qotd
quote
17
Message Send Protocol msp 18
ttytst source chargen 19
FTP Data ftp-data 20
FTP Control (21) ftp 21
Secure Shell (22) ssh 22
Telnet — 23
Simple Mail Transport Protocol SMTP
mail
25
time timserver 37
Resource Location Protocol RLP 39
IEN 116 Name Server name 42
whois nicname
43
43
Domain Name Server DNS
domain
53
MTP — 57
BOOTP Server — 67
BOOTP Client — 68
TFTP — 69
gopher — 70
rje netrjs 77
finger — 79
Hypertext Transport Protocol HTTP
www
80
ttylink link 87
Kerberos v5 Kerberos
krb5
88
supdup — 95
hostname hostnames 101