I'm having troubles on a SA 520 router in Load Balancing mode (WAN1 with ADSL router, WAN2 with Wimax modem).
It seems like Load Balancing working pretty well but some terminal server connections are having stability issues. These sessions are 4 with 4 customs ports forwarding to 4 different computers.
One of them works well, others not and one doesn't work at all. 4 firewall's rules (8 in fact, 1 for each WAN) are made in the same way...
For the test connection (the one which worked well), I had to disable some "Attacks" features to improve its stability (like TCP Flood protection).
What would you advice to fix these problems and make TSE connections work well ? I forgot to mention that they work well with the ADSL router only with simply firewall rules.
Thanks in advance for you further help !