Cable crossover on intf

Can I use a crossover cable from the interface both in/out traffic. Basic configuration is that our provider has setup a T1 just for them. They want to connect the router to our f/w on an additional interface. My question is: can it be used for traffic entering and leaving or will I need to configure another intf and then have one and on the other?

Hi Paul,.

Router and firewall connection directly need cable crossover. The link will strictly be used to send or receive traffic between the firewall and the router only. Which means, if you have the traffic destined to pass through the router, the source can be any firewall ports. You can control this with nat nat/ACL/static combination.

Your question is whether you can use the same link incoming & outgoing link. The answer is '' not possible. '' You must have another port on the firewall for host the segment of your seller.

Rgds,

AK

Tags: Cisco Security

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