2821 as Firewall/MLPPPx4xT1/VPN(ipsec) and nat for some hosts

Unanswered Question
May 6th, 2007

Internet Router/Firewall/VPN with 4xT1--------Internal LAN

Will this work?

the MLPPP will be the outside but what will the Firewall use as it's outside address.

We also have a class C network. How can I use the class C network on the outside firewall and VPN portion?

I have this problem too.
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bjornarsb Mon, 05/07/2007 - 06:04


If Router/Firewall/VPN is the same box,

the outside ip would be the one assigned to your dialer interface. You can have the class C nettwork assigned on the LAN int of the 2821.

If you want a portion of the class C nettwork on the outside, and your provider agree you can use ip unnumbered fa0/0 on your dialer interface.





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