I don't need no stinking firewall!
jay at west.net
Tue Jan 5 21:18:47 UTC 2010
Jason Shearer wrote:
> Doesn't using the established allow any packet with ACK/RST set
Yes, as would be expected for legitimate return traffic for a TCP
connection initiated from a browser inside the firewall.
> and wouldn't you have to allow all high ports?
That's what the ">" is for. Cisco syntax "gt" (greater than).
The point is that either of these will deny unsolicited new connection
attempts from the outside to TCP 22 (and 445, 135, etc.)
Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
Impulse Internet Service - http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV
More information about the NANOG