I am having an issue running a network application that uses UDP 5093 to access a license server over an IPSec site to site VPN. I have disabled both the Windows and Anti-Virus firewalls on both sides of the connection. Using Wireshark I can see that the client is sending the request but the server side is not receiving it. Would the SA520W firewall be blocking this port?
I performed some additional tests using both a Cisco VPN client connection and SSL VPN Portal into the router where the license server exists.
When using the VPN client connection, I get the same behavior as the remote client going through the Site-to-Site tunnel. The application times out and displays a message about making sure that UDP port 5093 being open on the firewall.
When using the Cisco SSL VPN portal, I am able to successfully launch the network licensed application.
How do I get this to work over the IPSec tunnels? Both the remote and local site have SA520W's with the 2.1.18 firmware.
I created a firewall rule on the SA520W that the license server sits behind that opens UDP port 5093 to the WAN IP Address (NAT to license server IP address). If I edit the application settings on the remote client to point to the remote WAN IP Address, the application launches successfully and pulls a license from the server. Still puzzled about this not working through the IPSec tunnel.
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