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IS MY ISP BLOCKING MY A SURVIVAL CRAFTING GAME SERVER, OR IS IT MY ROUTER?

Solveddedicated-servernetworkingport-forwarding11 replies · 502 views · started
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Accepted solution by Clara Sato — Check whether youre behind CGNAT. Compare teh WAN IP shown on your router with teh public IP shown by a what is my IP site. If they…
  1. Chen A.
    @chen.arslan

    long time lurker first post lol I'm tearing my hair out. My a survival crafting game server on my old desktop works locally, but my friends' server list shows nothing. I forwarded UDP 27015 and still got this on the host when I checked teh network:

    Network & internet

    Network & internet
Wi-Fi  •  HomeNet_5G
No internet, secured

Connected, but nothing loads. Troubleshoot problems?

    any ideas before i give up and rent a server?

    im reasonably techy, but networking is not my strong suit. id appreciate a checklist of what usually goes wrong, sooo I can go through it step by step.

    6
  2. Diego Bauer
    @thread_wrangler

    Does your routers WAN IP match your public IP?? ?

    3 0 helpful
  3. Chen A.
    @chen.arslan
    in reply to @thread_wrangler

    sorry forgot to say my old desktop had changed its local IP after a reboot. the forwarding rule pointed to the old one. sorry for the wall of text lol

    2 0 helpful
  4. Nico Dubois
    @ndubois_0

    same issue here on my homelab box. glad im not the only one

    19 0 helpful
  5. Mateo Koch
    @shader_pilot

    Many games use more than one port: a game port and a query port. The server list uses teh query port. Check the server config and forward both. fingers crossed 🤞

    5 0 helpful
  6. Wren D.
    @wdubois

    wait what idk man that sounds like bad advice tbh just my 2 cents

    0 6 helpful
  7. Felix Stone
    @felix_tensor

    ok so if you have a modem/router combo plus your own router, you may be double-NATed. Either put teh ISP device in bridge mode or forward teh ports on both devices. fingers crossed 🤞

    2 0 helpful
  8. Idris
    @idrisd416

    ahh classic port checker sites often report UDP ports as closed even when they work, because UDP has no handshake. Test by having a friend connect directly with ur public IP and port instead.

    2 1 helpful
  9. Hugo Arslan
    @hugo.arslan

    oh also how is this thread still going lmao... i swear survival is cursed :)

    3 1 helpful
  11. Clara Sato
    @clara.sato36
    in reply to @thread_wrangler Accepted solution

    Check whether youre behind CGNAT. Compare teh WAN IP shown on your router with teh public IP shown by a what is my IP site. If they differ, or teh routers WAN IP starts with 100.64 to 100.127, your ISP uses CGNAT and port forwarding wont work.. 😂 ask ur ISP for a public IP. lmk how it goes

    0 4 helpful
  12. Chen A.
    @chen.arslan
    in reply to @clara.sato36

    @clara.sato36 omggg set a DHCP reservation for my old desktop, re-pointed the forward, and opened teh query port too. Friends are building already. Thank you!

    0 2 helpful

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