Table b-7, List – Cisco ASA 5505 User Manual

Page 1894

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B-12

Cisco ASA 5500 Series Configuration Guide using the CLI

Appendix B Addresses, Protocols, and Ports

TCP and UDP Ports

To assign a port for DNS access, use the domain literal value, not dns. If you use dns, the ASA
assumes you meant to use the dnsix literal value.

Port numbers can be viewed online at the IANA website:

http://www.iana.org/assignments/port-numbers

Table B-7

Port Literal Values

Literal

TCP or UDP? Value

Description

aol

TCP

5190

America Online

bgp

TCP

179

Border Gateway Protocol, RFC 1163

biff

UDP

512

Used by mail system to notify users that new mail is
received

bootpc

UDP

68

Bootstrap Protocol Client

bootps

UDP

67

Bootstrap Protocol Server

chargen

TCP

19

Character Generator

citrix-ica

TCP

1494

Citrix Independent Computing Architecture (ICA)
protocol

cmd

TCP

514

Similar to exec except that cmd has automatic
authentication

ctiqbe

TCP

2748

Computer Telephony Interface Quick Buffer
Encoding

daytime

TCP

13

Day time, RFC 867

discard

TCP, UDP

9

Discard

domain

TCP, UDP

53

DNS

dnsix

UDP

195

DNSIX Session Management Module Audit
Redirector

echo

TCP, UDP

7

Echo

exec

TCP

512

Remote process execution

finger

TCP

79

Finger

ftp

TCP

21

File Transfer Protocol (control port)

ftp-data

TCP

20

File Transfer Protocol (data port)

gopher

TCP

70

Gopher

https

TCP

443

HTTP over SSL

h323

TCP

1720

H.323 call signalling

hostname

TCP

101

NIC Host Name Server

ident

TCP

113

Ident authentication service

imap4

TCP

143

Internet Message Access Protocol, version 4

irc

TCP

194

Internet Relay Chat protocol

isakmp

UDP

500

Internet Security Association and Key Management
Protocol

kerberos

TCP, UDP

750

Kerberos

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