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pfSense Router not receiving IP address from Comcast Business IP Gateway.

post #1 of 6
Thread Starter 
Hello All,

I've got a Comcast Business IP Gateway that i cant get my pfSense box to pull an IP from. If i connect my laptop to it I get an IP on my laptop and it works fine. I have the Comcast IP Gateway configured to disable all fire walling, and to only be running DHCP.

The Comcast equipment is configured to:
Lan IP: 10.1.10.2
Issuing IP's in the 10.1.10.X space with a subnet mask of 255.255.255.0

The pfSense box has WAN configured to DHCP, and the LAN configured to 192.168.1.1.

If i connect directly to the Comcast equipment I can connect to the internet and configure the IP Gateway, once I attach the full duplex port 4 on the IP Gateway to the WAN interface on the pfSense box i am unable to connect out, but i am able to connect to 192.168.1.1 and configure the pfSense box.

It was working a bit ago with out an issue, I've even tried to set a WAN IP of 10.1.10.200 to see if i'd get a connection, but that isn't working.

I'm sure it's something simple that I'm just overlooking at this time.
 
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post #2 of 6
@OP

Dumb question: can you put the business gateway in bridge mode (no routing, firewalling or DHCP) and let the pfSense box be your WAN gateway? Do you have a static IP you can assign to the WAN port on the pfSense instance?

I'm not familiar with the Business Gateway, so this is the only thing I can think to do.
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post #3 of 6


thats what m wan interface looks like...

maybe try reassigning interfaces.
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post #4 of 6
get the mac address of your laptop and try cloning your nic to it.
post #5 of 6
Do you have a static? Its 15 more a month for one but worth it.
post #6 of 6
You will have to call Comcast and have it put in full bridge mode. Your setup at the moment is basically having a router behind a router if I understand correctly. Your modem gets a IP on its WAN side and you set it to have a LAN IP in the 10.0.10.X range. With DHCP on on your gateway the WAN port of the pfsense gets a IP from the gateway.

Something like this at least from the sound of it:

91.223.1.567 -> 10.0.10.1->10.0.10.2->192.168.1.1 -> 192.168.1.X range

External Gateway WAN -> Gateway LAN -> pfsense WAN -> pfsense LAN -> your devices

Not an ideal setup really. Unless there is something you need the gateway to do (wifi perhaps) then just have it put into bridge mode. The external IP from Comcast will pass through to the WAN of the pfsense box. In fact I think pfsense firewall rules will stop traffic coming and going because of the WAN address.

On the other hand if that is the setup you want then it is still possible to do but will probably be more annoying than it is worth. You can uncheck block private networks on the WAN interface page and I think it will let traffic through. I think you will also have some firewall rules to adjust as well.
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