Ok, this is like a riddle...and very complex to ask, so please bear with me! I am sitting in a "smart" house (which ain't so smart right now). Actually, my client has 2 smart houses controlled by CRESTRON systems. These systems allow you to remotely control the climate, lights, video and volume in each house. Up until about a month ago, everything is working fine. Here is what has happened since then.
1. Sitting in house A on a wired network using AT&T DSL and a 2wire modem, the client is unable to connect to "smart" house B. I can surf the internet on the computer, nothing has changed in house B, as a matter of fact I can still connect to house B from any other network outside of house A. In addition, since he uses a docked laptop, I have moved that out of house A and connected to house B using the same computer that couldn't connect using the network in house A. In addition, none of the other computers in house A can connect to house B either hard wired or wireless. Oh, at this point I should say, that sitting in house A, I CAN connect to the Crestron in house A using public IP address with port 8080 (ie, by typing 62.1.2.3:8080 while sitting in house A, I can connect to the Crestron in house A)...obviously the IP is hypothetical to protect the innocent. So, sitting IN house A, I can connect to House A using a public IP, but I can't connect to House B. Outside of this network, on the SAME computer, I can reach House A or B from anywhere.
So, being the genius I am, and after putting up with AT&T on the phone (which is like scratching nails on a chalkboard), they decided it was a modem issue and sent me a new (refurbished) 2 wire modem. The old one was probably 7 years old, the one the sent me was a super duper new model that was gonna solve all my problems.
At this point I should also say that I carefully examined the set up of the old modem to make sure I correctly opened the ports to allow connectivity to Smart House A where the modem was being installed. The interface on both modems is virtually identical. There are 3 ports that need to be opened in order to hit the Crestron, which I opened on the new modem.
After installing the new modem, and opening the 3 ports nothing changed as far as connecting from House A (with the new modem) to House B. (Still not able to connect) And now I have an added problem. Sitting in house A, I am UNABLE to connect to the Crestron in House A using the public IP (62.1.2.3:8080). However, by using the private IP inside the network (192.1.2.3:8080) I can connect no problem. So now, from INSIDE the network, I cannot connect to EITHER house using their public IP addresses (Obviously, each house has a unique IP). But from OUTSIDE this network, I can connect to both.
Internet explorer times out, I get a DNS frame error that quickly flashes in the status bar before I get the standard "page could not be found"
I rebooted the Crestron in order for the NEW DSL modem to find it. The Crestron has a static IP.
I think I have included everything. I would sure appreciate any comments, suggestions, etc. you may have. These smart houses have kind of made me feel very stupid!
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