You havent described what the actual problem is.... I assume the VPN tunnel is not connecting.
Sorry about that, Yes VPN tunnel is not connecting

What happens if you try to use an OS native vnp client? Windows built-in VPN client - does that work?
Yes like chram,,,,,I did configure Windows built-in VPN client on site then I tried to configure IPsec for SG300 through (remotely) via Windows built-in VPN client

Is the modem or the snapgear doing the authentication with the ISP?
I did not get what did u mean by that ?

Have you rebooted the snapgear after configuring?
No, I have not.

Ensure the tunnel password meets secuirty criteriea,
I did not remember that I have used a password through my configuration,,,,let me check that it again.

Also, increase the timeout value to 120 and check the snapgear logs. They will inidicate how far the VPN gets before it drops out, and will indicate the problem.
I will try to post the log.


I was not sure about SG configuration ,,,,did u check that ? did u find any thing that might be wrong ?

Thanks