VPN connections over AT&T and Verizon
Posted on 2011-10-19
This one has me stumped, however I must say I have little experience with our Cisco ASA at this time, and no one else here in our IT department has the skills to even touch the device. So that leaves me. I could make the changes if I knew what needed to be done, so I am hoping someone has an answer.
Recently all users that try and remote desktop into their computers via an iPhone, iPad, or any other phone will fail with the error "failed to establish TCP connection". This is the same error that you would get if you tried doing it without first connecting up to the VPN. The VPN connection is successful, however you can not ping internal IP addresses, nor can you connect to any local computer via remote desktop. This worked a few months ago with no problem and just stopped one day. No changes were made to the ASA device as I am the only one with access and I just let it be. I am thinking something changed with the way the cellular networks deal with traffic. I thought I saw something about activating IPSec with Nat-T on the ASA to resolve the problem. I found the area in the ASA gui where this option was for the Remote VPN connections and turned it on, however it did not resolve my problem. So I turned it back off.
Any ideas on what I should do?