Back to your ISP to get more IPs for those servers. And talk long and hard with your IT folk to straighten this out. It certainly does not look like what we would use at home or with an everyday what millions use internet connection.
I apologize in advance for my immature knowledge, and humbly request your help with my network configuration:
I have an ActionTec C1000A (Century Link) modem/router that is set as my DHCP with a gateway of 172.18.12.1
Underneath the ActionTec, I have 3 desktop computers (CompA, CompB, and CompC running Windows and a Netgear ProSafe FVS318Gv2 (DHCP turned off) with a gateway of 172.18.12.201
Underneath the Netgear router, I have 2 servers (ServerA and ServerB running Windows Server 2012). ServerA static external: 126.96.36.199, Server A static internal: 172.18.12.200, ServerB static external: 188.8.131.52, Server B static internal: 172.18.12.36
My biggest problem is having the 2 servers on really what seems to be a separate network (the cat5 from the ActionTec to the Netgear is plugged into the Netgear WAN port). The ONLY reason I have the Netgear ProSafe in my network is because I need to expose ServerA and ServerB publicly (I can't accomplish this using the ActionTec firewall, so I had to bring the Netgear ProSafe in so that I can expose them using the Netgear router).
Furthermore, my showstopper is this: I cannot touch ServerA or ServerB from CompA,B, or C internally (separate network) or externally (I have NO idea why). Oddly, any computer outside my network can touch ServerA and ServerB??? I am so confused.
I having been at this for over a week. I have tried to attach the Netgear ProSafe as a component of the ActionTec network (plug the cat5 into the Netgear ProSafe LAN port), of course that solves my showstopper (CompA,B, and C can all see ServerA,B), but I lose public access to ServerA and ServerB.
I have a strong feeling I am making this much more complicated than it needs to be. Any help would be GREATLY appreciated. In addition, I have a very simple diagram if you are interested that I can mail.