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Cisco VPN (806 to 1720) and MTU Problem

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bobcrane

MIS
Sep 12, 2003
17
US
We're trying to test having all satellite offices use the internet through our VPN instead of having their own connection.

Our 1720 is connected to a T-1 that gets us to the net. All PC's internal can surf anywhere.

I am connected to an 806 router connected via DSL coming in through VPN. With it I can surf some but not all websites. Setting MTU to 1460 on the PC allows me to surf everything. I've set the inbound and outbound access-list on the 1720 to allow icmp packet-too-big, and unreachable on the inbound. I also have adjust-mss set to 1452 on all the ports on the 806 router I'm connected to and mtu set to 1492 on Dialer0.

Any other ideas?
 
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