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Guest Wireless Network/Client VPN acess

Posted on 2013-05-30
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Last Modified: 2013-06-07
Hello everyone,
             Thanks to everyone in advance for your assistance.  The company I work has a wireless network that has two networks configured, one that connects to our domain and a guest network.  The guest network doesn't have access to our domain at all so it's just internet access.  The controller is an Aruba 3200XM and we have (5) AP-105's.  The other day a client came in and wanted to connect back to her office via a Cisco VPN client from the guest network.  She got a Cisco error message 412 and I think I figured out how to fix it but my question is is there a security risk with allowing clients to establish VPN connections while connected to our guest wireless network.  Thanks again for your thoughts.

Pat
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Question by:mhmservices
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Jakob Digranes earned 2000 total points
ID: 39208142
Nope not really. - given the fact that this is a guest network and you have all security rules and firewall settings correct, denying access to corporate LAN.
The only security issue is that guests can tunnel potentially unwanted traffic through the encrypted tunnel and thus bypassing your firewall.

Let's say that your guest wireless deny access to port TCP3389 (remote desktop) so when a user try to connect to a server - the traffic is stopped.
So they open a VPN connection, using their own remote gateway - so all traffic is tunneled on port 443 (SSL-VPN) or UPD500 (IKE) out from your wireless, and then goes to the RDP on TCP3389 from remote gateway.
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by:mhmservices
ID: 39228736
Thanks for sharing!
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