2 offices, both have cisco rv220w firewalls, both use Comcast business and are across the street from each other. Office A has a 192.168.0.0 network and office B has a 10.0.1.0 network. Each offices respective firewall handles dns and dhcp.
Background: I set a site to site vpn between the two locations. They can access each other's offices. Problem: I go in today because users complain they cannot access certain file share. I look at their IP address on the workstation sharing the files in Site B and sure enough, they have IP addresses from site A. I've been pulling my hair out trying to figure out how this is possible. I decided to kill the vpn, reboot both firewalls. I do a ipconfig /release and /renew on the said file server (workstation), it still pulls an IP address from site A. I then give the said workstation a static IP from its own subnet, everything works fine. I can access everything in its own subnet. I cannot access the Site A. I then tested and gave it a static IP from the remote office (Site A). I can now see everything in the remote office. I decided to shutdown the firewall and Comcast modem. You would think I can't get out of the office but I can still access the remote site and even get online. What in the world is the problem? Is it possible Comcast came out, did some work and screwed something up? I have a Comcast field tech coming out in a few hours but would like to figure out what the heck is going on. Does anyone have any suggestions on what I can do to troubleshoot this? -Jimmy
