I'm running the Ubuntu 18.04 Linux dist on a VPS. I am unable to connect to it via SSH, and pinging the SSH port as well as attempting to connect result in a timeout.
Here's what I know:
- Pinging port 21 (edit: more formally, opening a TCP connection to port 21) for FTP does work and connecting via FTP is possible
- I have a docker panel running that is loading (but requesting info on individual containers returns a 504 timeout)
- I have a website (see https://status.mineplex.club) that is running, and making API requests from within the server successfully.
- ufw is disabled
- There is a VNC console given by my Cloud-VPS provider that allows for me to connect to the server, so I am able to access it internally and run commands.
- I did a port scan and it says port 22, 80, 443 and 8080 are all working. So why do I time out when I try to open a TCP connection to port 22, or connect to the server via SSH?
- I was able to curl https://www.website.com from within the server successfully
I'm not very knowledgable in Linux or networking. There is a solid chance there is a "standard" on the Unix StackExchange when it comes to troubleshooting, but I'm not sure what logs would be helpful, so feel free to ask away.
Maybe an sshd issue?
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Best Answer
Somehow, SSH (or the SSH port) was blocked from the network I was trying to use it from. It was an educational building, but I didn't figure they'd go so far as to block something like this.
Immediately, when I got to my home network I was able to SSH in. Sorry for the trouble, this was a stupid issue on my end.