I have a VPN3005 connecting to a FW-1 firewall (another company). I have configured the tunnel and routes in our network and can bring the tunnel up and ping the other end.
At the other end they try to ping me but the tunnel will not come up. They get and "Invalid Cookies" error. If the tunnel is up they try to http or ftp to me without success. I have an analyser on the outside network (internet side) and see no traffic (it would be encrypted but I would see some packets).
I suspect they have a problem with routes or filters but they say not. Are there any other causes or how can I proceed?
I am assuming that the "invalid cookies" error is a browser generated error when they HTTP or FTP but not sure why they see that. I would like to know if they tried to ftp other than in the browser url line (dos prompt, third party app etcc..) - what happens?
I agree with you, from your description that this is a routing and/or filter configuration error! I am not a FW-1 expert but if we could see the rule sets we might be able to interpret them.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...