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CarmelKevin
CarmelKevin
New Member
January 8, 2021
Solved

VPN connection works only over wifi, not wired

  • January 8, 2021
  • 3 replies
  • 62979 views

I'm running FortiClient to connect from home to my organization's VPN.  Everything works fine when my laptop is connected via wifi.  However, if I plug the ethernet cable (from the very same home network) into the laptop and connect FortiClient, I cannot connect to any of my organization's servers, even though the VPN connection succeeds and is reporting an active connection.

 

Any ideas?

    Best answer by boneyard

    first suspect is your home router / modem / ap / ... does it have different settings for the wireless compared to the wired part? or are they different devices all together?

     

    it might be worth to call your ISP helpdesk (assuming they provide the equipment) on this.

    3 replies

    boneyard
    boneyardAnswer
    Valued Contributor
    January 9, 2021

    first suspect is your home router / modem / ap / ... does it have different settings for the wireless compared to the wired part? or are they different devices all together?

     

    it might be worth to call your ISP helpdesk (assuming they provide the equipment) on this.

    CarmelKevin
    CarmelKevinAuthor
    New Member
    January 9, 2021

    So, I gave AT&T a call this morning and... wait for it... they were no help.  They ran many tests to let me know that my internet connection is up (of course it's up).

     

    You do have an interesting thought the the router and the wireless access point are separate devices, so there must be some setting difference that I can find.  However, it 's odd that my VPN requests go from laptop -> access point -> router -> corporate VPN -> network servers, and this works fine.  But going from laptop -> router -> corporate VPN, it connects to VPN, but cannot see network servers. 

    Toshi_Esumi
    SuperUser
    Toshi_Esumi
    SuperUser
    January 9, 2021

    First thing to suspect is the IP/subnet you get from wifi or LAN. Depending on how the FGT side is set up (NAT or no NAT) LAN subnet might conflict with server side. Since the tunnel comes up in both cases I would comare the routing table of your machine when the tunnel is up, then do some traceroutes toward the server to see how far it can get. At least it would tell you it's on local side or server side.

      Dwayne_A
      Dwayne_A
      New Member
      January 10, 2021

      On the hardwire, Make sure that the adapter isn’t set as static and maybe has a different dns server that could be blocking it.

       

      most wired/hardwire use the same IP subnet but wireless is always dhcp 

      make sure the lan adapter is dhcp also. 

      lastly I would remove the lan adapter, reboot and let it re-add back to the laptop 

      that will remove all configuration and it should run like the wireless. 

      let us know

       

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