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WHY DOES L2TP WORK AT THE OFFICE BUT NOT FROM A HOTEL?

Solveddnsroutingvpn4 replies · 223 views · started
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Accepted solution by Luca — hotel and guest networks sometimes block UDP or specific ports. if the client claims connected but no handshake data flows, try the…
  1. Pia S.
    @pia_cipher

    Weird one :/ From a hotel, L2TP connects and then nothing internal resolves:

    if I type the IP address of teh RDP server directly it sometimes works! but names fail every time. help me before I start memorizing IP addresses.

    i've also flushed the DNS cache, rebooted my laptop and tried a different browser, just in case. no change. i'm convinced it's something about how names are looked up over L2TP, but idk where to look.

    4
  2. Zoe Ortiz
    @tensorlab

    for split tunnel setups, teh internal subnets must be in the pushed routes (AllowedIPs in WireGuard, push "route ..." in OpenVPN). if the RDP server lives in a subnet not in that list, it goes out ur normal internet connection instead. worked for me anyway 🤷

    4 0 helpful
  3. Luca
    @framemonk
    Accepted solution

    hotel and guest networks sometimes block UDP or specific ports. if the client claims connected but no handshake data flows, try the TCP/443 fallback mode if your VPN offers one.

    1 5 helpful
  4. Ava
    @tensornomad-3px

    Id move teh corporate network off common home ranges entirely. Its painful once, then the overlap problem is gone for everyone.

    1 0 helpful
  5. Pia S.
    @pia_cipher
    in reply to @framemonk

    @framemonk dude changed my home router to a different subnet... evreything works over L2TP now. overlap was the culprit.

    1 2 helpful

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