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problem with VPN GRE and IOS Firewall

sergiu.campian
Level 1
Level 1

Hello. I have a problem with a Cisco 2800 Router. I can't connect from the inside network to outside using a GRE VPN client (MS). I did a packet capture and responses are coming on the outside interface but they never reach the inside interface. I allowed both IP protocol 47 and TCP 1723. I've attached the running config. Please help.

1 Accepted Solution

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3 Replies 3

Claudiu Boar
Level 1
Level 1

i found this usefull:

http://siskiyoutech.com/blog/?p=78

fbhura
Cisco Employee
Cisco Employee

hi ,

     you would require that you open up GREon the outside interface.

access-list ex 199 permit gre any any

that should take care of it.

Faisal Bhura

It doesn't work with the acl only, but the method described in the link above with the inspection policy did the trick. Thanks.

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