I don't need no stinking firewall!

Jay Hennigan 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

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