AT&T Uverse Modem blocking ipsec VPN tunnel
I have an AT&T uverse modem at one of my remote sites. It was working up until a few weeks ago. The Cisco ASA (Firewall) is behind the AT&T modem acting as their firewall, router and DHCP server. When I remote into a workstation at the remote site, I can see that the firewall is configured correctly, and is sending out the traffic properly to form the VPN tunnel.
I have attempted to call the AT&T DSL hotline only to give me an automated response of that the internet is working fine.
If someone from AT&T can please contact me, I would appreciate it greatly.
I just need the ports to not be blocked from the uverse modem so I can form the VPN tunnel back to our corporate office.