We have a 3000 concentrator and is configured with a remote vpn on it. All the inside network is allowed once a user connceted to the vpn. It is totally behind of firewall. I can access it from an outside IP.
But I can't log into the vpn from the inside network. I can ping the public interface; but when i try to log in from the client, the server report shows no any records of my IP.
Why can't I log in from the Inside?
=====Inside Network========VPN Concentrator=====FW=====Outside Network
Why are you trying to VPN from the inside? The purpose of VPN is to encrypt traffic between your PC on the internet towards the VPN Concentrator, once the traffic gets to your VPN Concentrator, it will be decrypted and it will go as clear text towards your internal network.
So what is the purpose of trying to connect from within the inside network?
The reason why it doesn't work is because of routing. You are within the internal network, so the traffic will go out towards the firewall, and come back through the same firewall to connect to the VPN Concentrator public interface, which is why it's not working, and if the purpose is to access internal network, then you are already inside the network which complicates things as your ip pool then needs to be routed back towards the inside.
Hope that makes sense.