Help With Home Network / Port Forward

JasonPDK

Member
I get my connection from a local ISP (in Ireland) that supplies wireless connections to areas that the main ISP's will even look at. They supply a modem that connects to the aerial they've installed outside.
From there I've connected it to a Sonicwall TZ 150, then to a switch and then to two wireless AP's. The problem I'm having is probably with the Sonicwall and/or the modem. I'm not even sure if the Sonicwall is right for this set up but I got it for free. I've tried to open a port to allow me to access my home server from work, but I just can't get it. I've essentially done what this article says except mine doesn't have wireless capability.

I've everything on the 192.168.41.0/24 network just because the modem was 192.168.41.1 and I just set everything up similarly. Here's how the Sonicwall is set up. I have no access to the modem. I asked my ISP and they block the first 1200 ports by default, the others should be openable (if that's a word).

Any help is appreciated,
Thanks! :)
 

beers

Moderator
Staff member
Do you know if the upstream modem is already providing NAT?

From the Sonicwall screenshot it looks like you might be in a double NAT situation with overlapping subnets.

See if they can give you a bridge mode configuration on the modem, and then your Sonicwall would be the effective WAN facing device and you would see it's WAN IP change to an external address (once released/renewed).
 

JasonPDK

Member
Do you know if the upstream modem is already providing NAT?

From the Sonicwall screenshot it looks like you might be in a double NAT situation with overlapping subnets.

See if they can give you a bridge mode configuration on the modem, and then your Sonicwall would be the effective WAN facing device and you would see it's WAN IP change to an external address (once released/renewed).

You're right. That's what it was. I rang my ISP and they sorted it out. Thanks!
 
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