I have a few TZ170 sonicwall firewalls deployed. On the main site we've hooked up an additional internet provider to the OPT port to get some redundancy. My site to site VPNs will connect flawlessly on both the WAN and the OPT port when one connection goes down. However I'm unable to get the Global VPN Client to connect on the OPT port. The sonicwall is dropping the packets but I don't see any firewall rule telling it to do that.
2 11/19/2008 17:02:36.848 Notice Network Access UDP packet dropped [CLIENT IP ADDRESS], 500, OPT [OPT PORT IP ADDRESS], 500, OPT UDP ISAKMP