This is what I previously wrote:............
I am wanting to use my cisco client 3.5 to access an authentication server on our customers network for administration duties.
I am using client 3.5 going through a Sonicwall Pro 300 firewall set for NAT and connecting to a 3005 concentrator which then authenticates the user via a a Radius Server.
I am able to authenticate from the client but am unable to use terminal services,vnc,telnet or even ping the destination server.
Where as when I use a dial-up connection via 3rd Party ISP I can authenticate and access the Radius server via terminal services etc etc.
I looked at the Sonicwall firewall to see if ipsec passthrough was available but unable to find it.
I find it strange that I can authenticate (establishing the tunnel) on my internal lan, but no do anything else.
I am assuming it has something to do with the sonicwall.
here is the path i am trying to achieve.
Cisco client-sonicwall-3005 concentrator-cygberguard firewall-authentication server.
I have enabled NAT-T - that is the UDP protocol on port 4500 on my sonicwall firewall and am still unable to use the VPN.Do I need to enable the Cyberguard Firewall for NAT-Traversal - UDP 4500.(that is in between the 3005 concentrator and the authentication server I am trying to connect to via terminal services)
It seems strange that I can authenticate initially.
Any thoughts or ideas would be grateful been looking at this for a while now without any progress.