GRE OVER IPSEC

[ajike ola]

I am very new, and was trying out gre over ipsec configuration, using R1=>R3=>R2 configuration. My GRE and IPSEC originate at R1 and terminate on R2, however when connected a PC to R3, I was able to ping both R1 and R2. How is this possible, if the tunnel between R1 and R2 is supposed to be secured.

I verified that the tunnel is up and packets are being encapsulated and encrypted.

Thanks for your help.

[raga.fusionet]

Hi Ajike,

Could you clarify a little bit on the topology?  From what I understood you have a tunnel between R1 and R3 and another between R3 and R2, is that right?

When you say you were able to ping R1 and R2, you mean the "public" IP address of the router or a private IP address behind the router?

Thx,

Raga

[ajike ola]

I am sorry for not responding sooner; I thought this was the wrong section to post this, so I posted same question under:

CISCO SUPPORT COMMUNITY=>NET PRO=>Network Infrastructure=>WAN, Routing and Switching=>Discussions

I have all updates to my question in the section above, under the title "IPSEC tunnel and GRE".

Sorry for the incovenience, and thanks for your help.