Cisco IOS Access Lists

Appendix A. Extended Access List Protocols and Qualifiers

Table A-1. IP protocols

Protocol name	IP protocol number
AH	51
EIGRP	88
ESP	50
GRE	47
ICMP	1
IGMP	2
IGRP	9
IP	0-255
IPINIP	94
NOS	4
OSPF	89
TCP	6
UDP	17

Table A-2. Qualifiers for ICMP

Type or code
administratively-prohibited alternate-address conversion-error dod-host-prohibited dod-net-prohibited echo echo-reply general-parameter-problem host-isolated	host-precedence-unreachable host-redirect host-tos-redirect host-tos-unreachable host-unknown host-unreachable information-reply information-request mask-reply mask-request
mobile-redirect net-redirect net-tos-redirect net-tos-unreachable net-unreachable network-unknown no-room-for-option option-missing packet-too-big parameter-problem port-unreachable precedence-unreachable protocol-unreachable	reassembly-timeout redirect router-advertisement router-solicitation source-quench source-route-failed time-exceeded timestamp-reply timestamp-request traceroute ttl-exceeded unreachable

Table A-3. TCP and UDP qualifers

IP Protocol	Qualifer	Port number (if any)
UDP	biff	512
UDP	bootpc	68
UDP	bootps	67
UDP	discard	9
UDP	domain	53
UDP	dnsix	90
UDP	echo	7
UDP	mobile-ip	434
UDP	nameserver	42
UDP	netbios-dgm	137
UDP	netbios-ns	138
UDP	ntp	123
UDP	rip	520
UDP	snmp	161
UDP	snmptrap	162
UDP	sunrpc	111
UDP	syslog	514
UDP ...