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Solved: Dual Router Setup issues

Discussion in 'Networking' started by XanathEngel, Sep 16, 2008.

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  1. XanathEngel

    XanathEngel Thread Starter

    Joined:
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    I'm trying to use UltraVNC to set up my office to work from home. I need to set up 8 computers, so I need 8 ports open to access the internet (in case more than one person tries to connect at one time.) I don't use Remote Desktop because half of the computers here are running WinXP Home (don't ask me why, I don't know). I'm working with our "network guy" who set up everything, but he's not really getting back to me. Because of the way the connections are I can't physically go and LOOK at how our setup is, I had to figure it out. This is my idea of what it looks like.





    WAN IP – 75.144.XXX.XX
    Comcast Modem/Router
    LAN IP – I don’t know
    |
    |
    WAN IP – 10.1.10.xx
    Linksys Router
    LAN IP – 192.168.1.1
    |
    |
    LAN IP – 192.168.1.192-199
    Computers in the office

    I came up with that because I can log into the Linksys router. However, when I go to my computer's actual external IP address I get a "Comcast Business Gateway" login. Hence, my idea of how things are set up.


    If that’s the case, then ports 5900 – 5907, 5800 should be forwarded from the Comcast one to 10.1.10.XX, right? On the Linksys router I already forwarded them all to the right computers which now have static IP addresses. I'm trying to work with our network guy, but he's really unresponsive. I don't think this is a difficult problem, or am I wrong? I guess I just want some input to help me figure this out so I can stop stressing out about it. Thanks!
     
  2. JohnWill

    JohnWill Retired Moderator

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    Messages:
    106,418
    You have two router daisy-chained? If so, you'll have great difficulty port forwarding. I suggest configuring the Comcast modem/router (whatever that is) to put the Linksys router in the DMZ, that way you only have the Linksys router's NAT layer to deal with. Other than that, what you posted appears correct.
     
  3. XanathEngel

    XanathEngel Thread Starter

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    Thanks for the advice, but I managed to figure it out. It wasn't my intention to have two routers, it's just that the modem tried to function as one. I made the IP address of the Linksys router static and matched it to the WAN IP that I got from grc.com. Using the default gateway and DNS of the modem, I basically just made it so traffic bypasses the routing functions of the modem and uses the Linkys router as the primary router. Kind of a weird fix, I know, but I'm glad I'm not so stumped anymore.
     
  4. JohnWill

    JohnWill Retired Moderator

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    I'd probably put the modem in bridge mode myself, since if the dynamic IP address changes for your ISP connection, you'll lose connectivity.
     
  5. XanathEngel

    XanathEngel Thread Starter

    Joined:
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    Messages:
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    The ISP gives us a static IP address which is the one I'm using, thankfully!
     
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