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I have a Debian 2.2 firewall doing
ipmasquerade running the kernel that came with it (2.2.18 IIRC).
This machine also serves as a web, email and DNS
server.
I woke up this morning and saw the following on the
monitor:
IP_MASQ:reverse ICMP: failed checksum from
24.112.23.202
IP_MASQ:reverse ICMP: failed checksum from
24.112.23.202 |
