The only thing you should have to do is make sure that ipsec passthrough is enabled,
I have never had to enter any port forwarding
needs to make Linksys to Swall work.
Also try to DISable (just for a test) block wan requests
as the sonicwall software still requires a ping
to the remote LAN to comlpete phase 2.
Also make sure any software firewalls are disengaged
and lastly make sure that the LAN scheme of the client
is on a diffreent subnet than the sonicwall's lan
SOnicwall is 192.168.168.x by default
and Linksys is 192.168.1.x
but that may not be how each side is set up.
Lastly what OS is on the client-
and which sonicwall software are you using
(Global or the older Safenet ?)--
Additional Linksys Info ?
And Also Available: