Configuring Cisco 881 to work with an outside static IP address
Posted: Sat Jul 02, 2016 1:44 pm
Do I need to do anything to configure our Cisco 881 to work with a static IP provided by our ISP?
We recently (finally) got a wired broadband connection to one of our buildings. I wasn't there for the installation, but based on the notes the installer left behind, our ISP has assigned us a static IP. When I connect the WAN port of the firewall to the outside line, it seems unable to communicate. Devices within the LAN are able to connect to the firewall and obtain IPs, but they cannot connect with the Internet. And a tracert from an inside device fails after hitting the firewall. My guess is the firewall is configured to work with a dynamic IP from the ISP, not static, and that I need to configure the static IP for the outside line on the firewall, but I'm unsure.
Any pointers here?
Thanks,
Matt Burr
We recently (finally) got a wired broadband connection to one of our buildings. I wasn't there for the installation, but based on the notes the installer left behind, our ISP has assigned us a static IP. When I connect the WAN port of the firewall to the outside line, it seems unable to communicate. Devices within the LAN are able to connect to the firewall and obtain IPs, but they cannot connect with the Internet. And a tracert from an inside device fails after hitting the firewall. My guess is the firewall is configured to work with a dynamic IP from the ISP, not static, and that I need to configure the static IP for the outside line on the firewall, but I'm unsure.
Any pointers here?
Thanks,
Matt Burr