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Nmap 5.00 releasedNmap 5.00 releasedPosted Jul 17, 2009 15:05 UTC (Fri) by foom (subscriber, #14868)In reply to: Nmap 5.00 released by tialaramex Parent article: Nmap 5.00 released I dearly wish the majority of NAT gateways and firewalls out there didn't drop TCP connections after 10 minutes of inactivity. But they do. It sucks, yes. But that's what's out there... My home NAT (linksys) did this. (until I replaced it with a linux box). And a non-natting firewall (Cisco, I think) at my workplace does this between certain internal networks! I'm sure glad you have a non-broken network, but a great many people don't.
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Nmap 5.00 released Posted Jul 17, 2009 17:30 UTC (Fri) by dlang (✭ supporter ✭, #313) [Link]
if firewalls (including NAT devices) didn't drop info about the connection after some period of inactivity you would have the equivalent of a memory leak because a system crash or reboot would leave the device 'tracking' a connection that the endpoint no longer knows about, and will never close.
routers and firewalls don't have infinite resources, so if you never timeout 'idle' connections you will eventually crash instead and take out everything
Nmap 5.00 released Posted Jul 19, 2009 9:21 UTC (Sun) by dankamongmen (subscriber, #35141) [Link]
bounded LRU, buddy
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