i have two gateways one on an sbs 2003 box with isa 2004 connected to t1 and another on sonicwall tz200 connected to coax.
on a couple of windows 7 workstations if i set the gateway to sonic wall windows update gives me code 80244018 encountered unknown error (when try to check for updates manually). update works fine if i change gateway to sbs box
sonic wall outbound is wide open allowing everything. when gateway on work station is set to sonicwall everything works (mail, internet) except windows update.
i change the gateway on the workstation with:
route change 0.0.0.0 mask 0.0.0.0 192.168.0.100 (sbs box) and 192.168.0.109 (sonicwall)
dns works fine (checked with nslookup), i can telnet to windowsupdate.microsoft.com on port 80
i'm going to try to trace some traffic and maybe capture some packets at the sonic wall to see if i can see any requests coming from the workstations to the tz200 during the update request but in the meantime i wanted to pick the experts brains
the microsoft error doesn't tell me much so now i gotta dig a bit to see where the traffic is stopping