So I just switched over from ZyWall 5 to USG 50 and I'm having a problem with my voip service.
The device, OBi 110, which is behind the USG will not register with the provider (voip.ms).
In the log I see it retrying all the time, but keeps coming back with "IPSec SPI: 0x0 (0) SEQ: 0x0 (0) No rule found, Dropping UDP packet"
All config on the USG 50 is default, just custom LAN subnet. I tried both enabled and disabled SIP ALG, no difference.
What can I do to get this thing working again?
Thanks :)
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