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Cisco ASA Series CLI Configuration Guide
Appendix 1 Addresses, Protocols, and Ports
Local Ports and Protocols
Local Ports and Protocols
lists the protocols, TCP ports, and UDP ports that the ASA may open to process traffic destined
to the ASA. Unless you enable the features and services listed in
, the ASA does
not
open any
local protocols or any TCP or UDP ports. You must configure a feature or service for the ASA to open
the default listening protocol or port. In many cases you can configure ports other than the default port
when you enable a feature or service.
tacacs
TCP, UDP
49
Terminal Access Controller Access Control System
Plus
talk
TCP, UDP
517
Talk
telnet
TCP
23
RFC 854 Telnet
tftp
UDP
69
Trivial File Transfer Protocol
time
UDP
37
Time
uucp
TCP
540
UNIX-to-UNIX Copy Program
who
UDP
513
Who
whois
TCP
43
Who Is
www
TCP
80
World Wide Web
xdmcp
UDP
177
X Display Manager Control Protocol
Table 1-7
Port Literal Values (continued)
Literal
TCP or
UDP?
Value
Description
Table 1-8
Protocols and Ports Opened by Features and Services
Feature or Service
Protocol
Port Number
Comments
DHCP
UDP
67,68
—
Failover Control
105
N/A
—
HTTP
TCP
80
—
HTTPS
TCP
443
—
ICMP
1
N/A
—
IGMP
2
N/A
Protocol only open on destination IP
address 224.0.0.1
ISAKMP/IKE
UDP
500
Configurable.
IPsec (ESP)
50
N/A
—
IPsec over UDP
(NAT-T)
UDP
4500
—
IPsec over UDP
(Cisco VPN 3000
Series compatible)
UDP
10000
Configurable.
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......