We are running a Discourse instance on our server, but we’ve encountered an issue where anyone can take our server’s public IP and create an A record on their own domain, effectively pointing their domain to our forum. We want to ensure that only our authorized domain can be used to access the foru…

[תמונה] Jay Pfaffman: By default discourse redirects to the hostname How would that play any roll? OP suggests now that everyone can mess up practically every web services in the world. Never mind. That’s why we have to configure hosts for web services. Everywhere, everytime, including Disco…

Thanks @Jagster and @pfaffman - I am working with @Abdelrahman_MoHamed on this. For my own understanding, if this is our discourse domain: forum.get.it which points to → 34.170.141.119 And someone sets up, lets say… hijack.get.it and points it to → 34.170.141.119 The expected behavior is that w…

[תמונה] Jacob Peebles: The expected behavior is that when someone types in: hijack.get.it it will redirect to forum.get.it Yes. That’s the expected behavior and it appears to be the actual behavior. As far as I can tell you don’t have a problem. And most browsers will default to https: and h…

Yes, but nothing happens. Totally same thing that you have right now someone knocking using ssh, bots etc. If you set up such site/forum then yes they would send visitors who would see what ever you started using that domain. But they can’t hijack your domain, because you are telling to world wich …

[תמונה] Jacob Peebles: hijack.get.it it will redirect to forum.get.it I understand that was just an example, but that spesific situation is impossible, because you own domain get.it and its nameservers dont know such DNS that would point to hijack.get.it` :smirk:

[תמונה] Jacob Peebles: forum.get.it which points to → 34.170.141.119 And someone sets up, lets say… hijack.get.it and points it to → 34.170.141.119 Yes, @Jagster is right. If you own get.it (btw, wow, $$$$$) someone else cannot use your domain just with another subdomain.

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pfaffman (Jay Pfaffman) 9 בפברואר,‏ 2025,‏ 1:35pm 2

Are you using a standard install? By default discourse redirects to the hostname.

נושא		תגובות	צפיות
Using Custom Domain Support	13	900	19 באוגוסט,‏ 2024
Deny access on domain name Self-hosting hosting	3	1294	7 בנובמבר,‏ 2016
After some hair pulling, I installed Discourse Self-hosting	3	582	24 במרץ,‏ 2023
Forcing access to Discourse via domain name only Self-hosting	4	929	5 באוקטובר,‏ 2017
Setup discourse.domain.com with main site at domain.com Self-hosting	5	1433	26 בדצמבר,‏ 2020

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