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How to set up an ethernet network for 2 computers?

Discussion in 'Cisco/Linksys Wireless Routers' started by Tomfun, May 8, 2009.

  1. Tomfun

    Tomfun Addicted to LI Member

    Hello all!

    I am having a problem with a friend. He has a WRT54GS router with 2 computers plugged by ethernet. Both have a successful internet access and I would like to access from one computer to the other one. But it's impossible to see them through the network. I can ping the router from both but I can't ping each other (i.e. I can't ping computer 1 from computer 2). That's weird.
    What do you think is wrong?
    What do I have to set?

    Thanks.
    Tom
     
  2. fyellin

    fyellin LI Guru Member

    Look at Advanced>>Wireless>>AP Isolation. It should be set to "disable".
     
  3. Tomfun

    Tomfun Addicted to LI Member

    Are you sure this affect the Ethernet connections?
     
  4. fyellin

    fyellin LI Guru Member

    You're right. I missed that key word "wired" in the original question.

    You've double checked that netmasks and all that sort of stuff are set up correctly, so that both wired computers think they are in each other's subnet? Just making random guesses, now.
     
  5. Tomfun

    Tomfun Addicted to LI Member

    Yep, they have the same netmasks. The DHCP automatically addresses an IP address which is in the same subnet.
     
  6. futureneo

    futureneo Addicted to LI Member

    Dont forget they need to be on the same workgroup and you need to enable the file sharing in both of them.

    :thumbup:
     
  7. Tomfun

    Tomfun Addicted to LI Member

    Hi Futureno, well if the ping doesn't work first, I don't think the OS settings will affect the network at this point?
     
  8. futureneo

    futureneo Addicted to LI Member

    You are right... i didn't read that part...
    Didn't you make a normal mistake and conect one of them in "Wan" port? And is your Linksys set to be a router or gateway?

    :thumbup:
     
  9. Tomfun

    Tomfun Addicted to LI Member

    Yes I am sure I plugged both computers on LAN ports. How can I check if it's set to be a router or a gateway?
     
  10. irootsk

    irootsk Addicted to LI Member

    Hmm interesting. When DHCP was set on router, was it with default settings 192.168.1.xx? Have you tried to set STATIC IP to the computers? Set the same workgroup. Make sure firewalls are OFF.
    Wich OS they run? Which firmware is on the router? Are you sure you tried to ping correct IP address? Sory for those silly question, but i don't know how is you knowledge of this stuff, so we need to eliminate as much as possible options to find the correct solution. So don't take me wrong.
    Last time we had similiar problem with D-Link "wired" router. And solution??? Firmware upgrade to the latest one. :wink:
     
  11. Tomfun

    Tomfun Addicted to LI Member

    No worries Irootsk, these are actually good questions and as you said, I need to see if I checked every single things.
    So yes, I ping correct IP Adress.
    One of them is running an XP Home version and the other one is an XP professionnal. But that should not be a problem.
    I made sure that all of them had its firewall off and they are on the same network.

    I am not at my friend's home but here are 3 points I should try next:
    I will first try to change the LAN ports connections on the router.
    The DHCP has the default settings yes, which also means they have the same netmask. But I will try to set static IP and see how it goes.
    I have no clue of which firmware is on the router but it's certainly not the latest. I was thinking about this problem but that is still weird that I couldn't ping each others.

    I am gonna do that the next time I will go there, which means in the next few days, and I will tell you what I've done.

    But if you think about anything else, let me know 'cause I can have missed something and as you said, sometimes it's just a stupid setting which wasn't set or set wrong.
     
  12. irootsk

    irootsk Addicted to LI Member

    one more thing. which antivirus is running on those PC? try to turn them off and than try to ping each PC. some antiviruses have an option to block ping request. maybe that's the problem.
     
  13. computeguy

    computeguy Network Guru Member

    sharing on both computers

    If you can't ping either computer then your problem is the firewall setting.

    Try disabling the firewall on both computers.... if this works... then
    you can setup an exclusion so both computers can share files.
     
  14. irootsk

    irootsk Addicted to LI Member

    computeguy - should be firewall, but not always. this time is Windows firewall turned off - as Tomfun said. But now it should be firewall built into antivirus. That why i asked him which version of AV is he running.
     

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