Transparent firewall on an 871

Unanswered Question
Mar 6th, 2008
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I have a frame connection to a class C network and want to segregate the traffic into four categories to be plugged into fa0 through fa3. I assigned an IP to fa4 and put vlan1 in switchport access mode with no ip but that does not allow firewalling unless I assign an ip to one more interface.


Is it possible to set an 871 between the edge router and the network without changing any net configs in the class C and still be able to firewall between the edge and the three interfaces?



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saintjon856 Thu, 03/13/2008 - 06:35
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adding the ip to the bridge group and specifying the route was what I was missing, thank you for pointing me to the doc, it was exactly what I needed.



saintjon856 Thu, 03/13/2008 - 11:59
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But one more question.


If you wanted to utilize the sdm to configure firewall rules, you are required to add a second ip address. the two addresses are not allowed to overlap yet both must be on the same subnet to pick up the traffic?

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