One way VPN?

[lengoo]

Dear All,
Thanks for all the help previously with helping me set up the VPN between our Checkpoint 4.1 firewall and the PIX at the other end... it is now working.
However, another issue has cropped up.. it looks like the VPN is only working one way..
The PIX is able to initiate a connection and then the key exchange happens and that works fine.. however, going the other way.. if the Checkpoint tries to initiate it doesn't work and we get an error message in the logs "encryption failure: error occured scheme: IKE"
It looks like the VPN is only working 1-way. I have set this up to work both ways on the Checkpoint.. I wonder if there is something on the PIX end which needs to be changed. Does anyone have any idea what could be happening here and how to change it?
Thanks

 

[rn4it]

Confirm that both sides are using the same phase1 and phase2 encryption methods. (ie. 3DES,MD5, etc).