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New Member

C1720 w/ IOS Firewall and 2 Subnets of FAS0

I have a customer that has a 1720 and has 2 subnets on thier FastEthernet port and only one is configured with an access list... Does anyone know a good resource for helping me configureit so that both subnets see each other fine and that both subnets are properly configured with the IOS firewall???

  • Other Security Subjects
2 REPLIES
New Member

Re: C1720 w/ IOS Firewall and 2 Subnets of FAS0

The following is a good place to start:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcprt1/1cfipadr.htm

If you have just the two subnets, and they need to talk to one another and you have not implemented firewall features, then its as simple as a couple of ip route statements. Give TAC a shout if you need assistance with this.

New Member

Re: C1720 w/ IOS Firewall and 2 Subnets of FAS0

And if I have implemented Firewall features for the primary subnet??? What then?

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