Icmp Types - Cisco PIX 500 Series Configuration Manual

Appendix D Addresses, Protocols, and Ports
Table D-6
Feature or Service
NTP
OSPF
PIM
RIP
RIPv2
SNMP
SSH
Stateful Update
Telnet
VPN Load Balancing
VPN Individual User
Authentication Proxy

ICMP Types

Table D-7
Table D-7
ICMP Number
0
3
4
5
6
8
9
10
11
12
13
14
15
16
17
OL-12172-03
Protocols and Ports Opened by Features and Services (continued)
Protocol
UDP
89
103
UDP
UDP
UDP
TCP
105
TCP
UDP
UDP
lists the ICMP type numbers and names that you can enter in security appliance commands:
ICMP Types
ICMP Name
echo-reply
unreachable
source-quench
redirect
alternate-address
echo
router-advertisement
router-solicitation
time-exceeded
parameter-problem
timestamp-request
timestamp-reply
information-request
information-reply
mask-request
Port Number Comments
123 —
N/A Protocol only open on destination IP
address 224.0.0.5 and 224.0.0.6
N/A Protocol only open on destination IP
address 224.0.0.13
520 —
520 Port only open on destination IP address
224.0.0.9
161 Configurable.
22 —
N/A —
23 —
9023 Configurable.
1645, 1646 Port accessible only over VPN tunnel.
Cisco Security Appliance Command Line Configuration Guide
ICMP Types
D-15