Modem firewall Technicolor

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huliz.green

Jun 10, 2018
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Hello there I would like to know if my spectrum provided technicolor modem firewall is protecting my network, with a netgear router hooked up to it. The modem is in bridge mode. I recently disabled the firewall on my router so I could get open nat on my PS4. Also I have upnp enabled on my router.
 
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bill001g

Titan
Aug 9, 2012
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If the modem is in bridge mode the firewall is likely disabled.

To a point the NAT alone acts as a firewall. When traffic comes in from the internet the router attempts to look up which machine to send it to in the NAT table and finds nothing so it drops the traffic. It makes it almost impossible to attack you machines. The router itself can be attacked but in general there is little they can do since it is a simplistic OS. There have been bugs in the past with UPNP being exploitable in the router but those have been fixed.

Now port forwarding or DMZ setting will allow traffic to pass to the end device but that is the risk you take using those settings. You are then dependent on the firewall software in the end device to protect you.
 
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