Hi,
A friend for whom I build a RH 6.2 firewall found the following entry in his
log:
Dec 16 12:32:38 xxxxxxxx kernel: IP_MASQ:reverse ICMP: failed checksum from
213.145.187.145!
Does anybody know what this person is trying to achieve? Should I block
certain ICMP messages on this masquearading firewall? Which ICMP messages
should I definitely allow to pass through the firewall? Any links to short
introductions to ICMP? Thanx.
Bye,
Leonard.
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