Comcast Gateway Modem with Built In Wireless Model CBR2_t

Question

Hello World. 
 I have a question that I already believe I know the answer to but I figured I'd ask anyway. 
 I have Comcast Gateway that has its own wireless built in of course. I want to firewall the wireless connectivity behind my Sophos firewall. Is this possible or will I need to purchase another wireless access point to put that wireless traffic behind my firewall. 
 I've tested a bunch of configurations but of course since the wireless is part of the Comcast gateway. It's using the Comcast Gateway Egress. 
 Thanks for all responses.

Vivek Jagad · Answer

Hi BobbyDigital , Thank you for reaching out to the community, you can configure any device behind Sophos firewall and treat that device in a LAN/DMZ zone...

PhilippRusch · Answer

Hello Vivek Jagad, 
 I think his "Gateway" is in front of the firewall.So he seems to be looking to route this to the firewall and then gain control over the traffic from the wireless. 
 BobbyDigital : Usually those boxes do a bridging with the wireless to the local LAN interface and the defined network at that interface. If the Comcast-Box is able to switch from bridging to routing and has the ability to define a second network for the integrated wireless access point, then you have a chance to achieve what you want. Then you need to route this traffc to the interface of the firewall.