We just received a new Cisco 800 router from our ISP that has its own static IP address as well as 4 ports, each port assigned a different static IP address.
Our network is currently set up with 1 firewall (Linksys BEFSX41) between the cisco 800 and a 3com superstack II hub that connects to a few other switches that users and IP phones are connected to.
We just signed up for a SIP Trunking service (hosted SIP lines for phones) and want to connect our Edgemarc 4500T4 appliance (that was given to us by the company that is hosting the SIP Trunking service) to one of the ports on the Cisoc 800 so that all traffic out will be coming from a unique IP, but before that we want to secure that by placing another Linksys BEFSX41 firewall (so it will be cisco 800 > linksys befsx41 > edgemarc 4500T4).
This means there will be 2 Linksys BEFSX41 firewalls on my network, one for regular network traffic and the other solely for use by the Edgemarc.
I was able to successfully configure the new firewall by connecting it directly to my pc and then 192.168.1.1 in my browser; then I configured it with the static ip settings provided by my ISP.
Once configured, i connected it in my network where it's supposed to be (cisco 800 > linksys befsx41) however, when I did that, we lost connection to the internet. We were still connected to the network and exchange server... but could not access the internet.
Anyone have any ideas as to what went wrong? I gave the new firewall exactly the same static ip settings as the first firewall (main ip, subnet mask, default gateway, dns1 and dns2) however I did give the new firewall a different local ip.
Any insight would be wonderful. Thanks.