We are installing a new T1.5 internet protocal HDLC (static). We have a cisco 1721 router with a seperate pix firewall. what is the config process and NAT assignments to have these two devices working properly.
What I am not sure of is do we put in a default gateway on the Pix to point to the WAN IP of the 1721 or the WAN IP from carrier. I know it cannot be to the LAN IP of the 1721 because the Pix will not send a packet back on the same interface it’s received.
Thanks for your help,