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New Member

Difference b\w Pre-Shared and Pre-Shared(X-Auth)


when you configure a group on VPN 3005, you have the option of selecting the IKE proposal with either 1). Pre-Shared Key OR 2)- Pre-Shared (with X-Auth).

What is the difference between these two ?

When i configure either of these, i don't notice a difference when dialing using the Cisco VPN Client.

Regards \\ Naman

New Member

Re: Difference b\w Pre-Shared and Pre-Shared(X-Auth)

Hi Naman,

Pre-shared keys are used between 2 routers when you want to create LAN-to-LAN VPN connection. Pre-shared (with X-auth) is used between a router and a VPN client. X-auth requires user and group authentication of the connecting unity client peers through some mechanisms like AAA server.

If you are using a head-end router to allow both site-end routers and remote VPN client peers to establish VPN tunnels, then the head-end router should be configured with both Pre-shared key and Pre-shared key (with X-auth); one for the LAN-to-LAN tunnel peer and the other for the unity client peer.

You can also refer to the following link

Hope this answered your question.

Warm regards,