A-15
Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Appendix A Addresses, Protocols, and Ports
ICMP Types
ICMP Types
Table A-9 lists the ICMP type numbers and names that you can enter in adaptive security appliance
commands.
IPSec over TCP
(CTCP)
TCP — No default port is used. You must specify
the port number when configuring IPSec
over TCP.
NTP UDP 123 —
OSPF 89 N/A Protocol only open on destination IP
address 224.0.0.5 and 224.0.0.6
PIM 103 N/A Protocol only open on destination IP
address 224.0.0.13
RIP UDP 520 —
RIPv2 UDP 520 Port only open on destination IP address
224.0.0.9
SNMP UDP 161 Configurable.
SSH TCP 22 —
Stateful Update 105 N/A —
Telnet TCP 23 —
VPN Load Balancing UDP 9023 Configurable.
VPN Individual User
Authentication Proxy
UDP 1645, 1646 Port accessible only over VPN tunnel.
Table A-8 Protocols and Ports Opened by Features and Services (continued)
Feature or Service Protocol Port Number Comments
Ta b l e A- 9 I C M P Ty p e s
ICMP Number ICMP Name
0 echo-reply
3 unreachable
4 source-quench
5 redirect
6 alternate-address
8 echo
9 router-advertisement
10 router-solicitation
11 time-exceeded
12 parameter-problem
13 timestamp-request
14 timestamp-reply
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