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Assigned IP Mismatch between connected PC and Router

Posted on 2008-10-12
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Last Modified: 2012-05-05
I'm trying to remote connect to my mom's computer (2hrs away). I haven't had any trouble before.. but after building a new computer for her, it's been a few months and now I need to Remote Control to fix other things. I'm pretty good with using Ultr@VNC, and been using it for years to help other people out, even her, but now I can't seem to connect anymore. I can remote manage her router just fine, but actually connecting to her computer through it doesn't seem to be working.

Her router says that her computer (wired connection) is assigned the IP Address of 192.168.0.2 (DCHP Settings set to assign addresses from 192.168.0.2 - 192.168.0.51), and I had set it so that she would always be assigned that IP Address with her particular MAC address. Now the problem, I believe lies in where her computer says that its own IP Address is 192.168.15.2. I had her check this through "ipconfig /all", several computer and router restarts and "ipconfig /release" -> "ipconfig /renew" processes. The result is the same. I remove the static IP assignment, and still the same results.

I have port forwarding set on her router for all ports 5800-5910, as I did use different ports to connect to other computers on the same network, but none of them are connected anymore. I keep switching that port assignment between 192.168.0.2 and 192.168.15.2, but neither work when actually trying to remote control her computer. All of her admin properties of uVNC Server are set to default ports (5900), accept incoming connections, appropriate password, etc, but it's not able to connect at all (not even popup of password dialog).

So then I decided to try changing the assigned DCHP ranges to 192.168.15.2 - 192.168.15.51, as well as the router's own LAN IP into 192.168.15.1. Altering other changes as well (with plenty of restarts, releases, and renews, and still no connection. No static LAN IP addresses are assigned, and her router states that her computer's LAN IP is 192.168.15.2. Yet when she checks her IP on her computer, it says that it has become 192.168.16.0.

Now I'm completely baffled, and I'm pretty sure that this is the root problem. Any ideas, please?

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Question by:SSJ4_Sunny
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StrongBad_Rules earned 500 total points
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I would change the internal IP address of the router back to 192.168.0.1 and have her assign her computer a static ip address.  You should be able to connect no problem with port forwarding to the static address.  It sounds like the DHCP server is freaking out!
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