On last week on different XG (with last firmware and some with the previous) the SSL VPN already configured work successfully but it is impossible to reach the internal LAN.
No ping. Into the log no evident trace of drop or failed something.
Just for a combination only on 1 firewall the traffic pass to internal resources so checking what was different from other firewall I discovered only and just the setting of the SSL VPN that was as TCP and not UDP as for all others firewalls (where currently is not possible to reach internal lan).
So the SSL VPN connection work always on all firewalls and before like 1 week also reaching the internal LAN (for example Desktop Remote connection to the internal PC work).
I am able to reach the internal LAN only if I change the setting of SSL VPN settings Protocol with TCP and not the suggested previous UDP.
The issue is both on 16.05.6 MR and 16.05.5 firmware.
I spent a lot of time to check that all others settings are the same on all firewalls like rules firewall, host, SSL remote Access Tunnel Access Permitted Network resources, etc.
So what can cause this issue?
What can block the internal UDP traffic ?
Could be something side PC client ? Like recent WIN 10 1703 update version ?
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