Table b-7, List – Cisco ASA 5505 User Manual
Page 1894
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:
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