A certain amount of the packets that arrive at our gateway
are blowback, remote hosts responding to traffic where an
address in our block was forged as the source. These are
most often ICMP Port Unreachables generated by UDP Windows
Messenger spam, with SYN-ACKs from port 80 running a distant
sec...
are blowback, remote hosts responding to traffic where an
address in our block was forged as the source. These are
most often ICMP Port Unreachables generated by UDP Windows
Messenger spam, with SYN-ACKs from port 80 running a distant
sec...
[ more ]