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Old 10-12-2008, 11:14 AM   #3
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Join Date: Dec 2006
Location: san francisco
Model: 8320
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Carrier: t-mobile
Posts: 2,166

4500 and 500 are the typical ports used for IPSec VPN (specifically ISAKMP is 500/UDP, IPSec NAT traversal is 4500 - usually UDP first then TCP second). If Smoothwall has any settings in that regard that they label as IPSec/VPN related then that would be a good place to tweak as well.

The Cisco IPSec/VPN client also uses port 10000/UDP, not sure if the BB does. Additionally, if you can also filter by raw protocols (other than TCP/UDP) then also prioritize protocols 47, 50 and 51. While not strictly necessary, if you're gonna do it might as well cover all the bases top to bottom.
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