UDP Traffic Throu SSL-VPN

[vfandrea]

I'm a Fortinet VPN User facing troubles with an Apple iOS (iPad and iPhone) application using UDP traffic.

This is the scenario:

iPad successfully connects to VPN Server with SSL-VPN.

The iOS application has to connect to a server using the VPN connection. This application has to receive UDP traffic on specific port, but no UDP traffic is received (TCP traffic works). UDP port is open on firewall.

As reason for this trouble the developer of the iOS application (and server application) told me that this is due by the fact the VPN is of type SSL-VPN and UDP traffic is not supported by SSL-VPN. Is this correct and a reasonable cause of the problem?

By the information I have, FortiOS version should be 5.2

Thank you.

[Toshi_Esumi]

Should work unless 1) you set NAT for ssl interface->server-connected interface policy, 2) you don't have a policy for opposite direction sver-connected interface -> ssl interface, and/or 3) you don't have a route to ssl vpn client subnet.

[emnoc]

UDP goes over SSLVPN with no problems, sounds like your developer feed you a line of BS.

I would run some diagnostic  debug comamnds when the movil-device is connected

[vfandrea]

Thank you to both for your answer. You confirmed my feeling. And finally the developer admitted his mistake.