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Cisco ASA 5500 Series Configuration Guide using ASDM
Appendix A Addresses, Protocols, and Ports
Protocols and Applications
Protocols and Applications
Table A-6 lists the protocol literal values and port numbers; either can be entered in ASA commands.
Protocol numbers can be viewed online at the IANA website:
http://www.iana.org/assignments/protocol-numbers
TCP and UDP Ports
Table A-7 lists the literal values and port numbers; either can be entered in ASA commands. See the
following caveats:
• The ASA uses port 1521 for SQL*Net. This is the default port used by Oracle for SQL*Net. This
value, however, does not agree with IANA port assignments.
• The ASA listens for RADIUS on ports 1645 and 1646. If your RADIUS server uses the standard
ports 1812 and 1813, you can configure the ASA to listen to those ports using the
authentication-port and accounting-port commands.
Table A-6 Protocol Literal Values
Literal Value Description
ah 51 Authentication Header for IPv6, RFC 1826.
eigrp 88 Enhanced Interior Gateway Routing Protocol.
esp 50 Encapsulated Security Payload for IPv6, RFC 1827.
gre 47 Generic Routing Encapsulation.
icmp 1 Internet Control Message Protocol, RFC 792.
icmp6 58 Internet Control Message Protocol for IPv6, RFC 2463.
igmp 2 Internet Group Management Protocol, RFC 1112.
igrp 9 Interior Gateway Routing Protocol.
ip 0 Internet Protocol.
ipinip 4 IP-in-IP encapsulation.
ipsec 50 IP Security. Entering the ipsec protocol literal is
equivalent to entering the esp protocol literal.
nos 94 Network Operating System (Novell’s NetWare).
ospf 89 Open Shortest Path First routing protocol, RFC 1247.
pcp 108 Payload Compression Protocol.
pim 103 Protocol Independent Multicast.
pptp 47 Point-to-Point Tunneling Protocol. Entering the pptp
protocol literal is equivalent to entering the gre protocol
literal.
snp 109 Sitara Networks Protocol.
tcp 6 Transmission Control Protocol, RFC 793.
udp 17 User Datagram Protocol, RFC 768.