On Thu, Jul 5, 2012 at 10:16 AM, David Coulson <david at davidcoulson.net>wrote: > What if they said "it would cause the generation of port-unreachable ICMP > packets to cease, and applications may hang until they timeout"? Not the > answer you're looking for, but not wrong either. > Umm, yeah, it is wrong. The question was TCP. TCP doesn't send ICMP Port-Unreach, it sends RST packets. Scott