VPN vs AVG Firewall

[sterningredients]

I'm using a RV016 router with VPN Client software on an XP machine (windows firewall disabled).

I can get a VPN connection as long as I turn off AVG firewall. I have tried reconfiguring the firewall to allow the VPN tunnel to pass through but perhaps I'm not doing it properly.

Can someone give me detailed (yet simple terminology) advice?

Thanks

[Federico Coto Fajardo]

Hi,

The AVG firewall might be blocking these ports:

UDP 500 --> to establish ISAKMP

ESP --> transport for VPN traffic

UDP 4500 --> transport if NAT-T is used

Check that there's an exemption to allow those ports on the AVG or any other firewall.

Federico.