ICMP Information

IP packets can be filtered based on the following optional ICMP conditions:

• icmp-type—The ICMP message type is a number from 0 to 255.
• icmp-code—The ICMP message code is a number from 0 to 255.

Table 35-2 displays the value for each ICMP type.

Table 35-2 ICMP Type Value 

ICMP Type1	Code
echo	8
echo-reply	0
destination unreachable	3
traceroute	30
time exceeded	11

1ICMP redirect packets are always rejected.

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