I own a refurbished HP Proliant DL380 G7, for a small project I've been working on (It’s the first time using a server and setting it up). But after I set up Ubuntu 20.04 on it, the first thing I did was check if SSH worked. I went into the config and changed the port, forwarded the ports I was using. I pinged on multiple ports and IP’s in and out the system, all of them were sending packages, but still had 100% packet loss (I did switch off the
ufw firewall for the port I was using). So there may be a possibility that the router was causing this, and so I went through all the settings to see if there was a possibility that some kind of firewall was stopping my SSH request, I checked it all and it didn’t work. And so that’s what got me here. To ask if there was something that could stop my request not going through due to the router or the internet service. Here’s a list of thing I already tried (shortening what I already said with some extra stuff):
- Changing SSH port through config.
- Both triggering the port, and using Virtual Server to forward it.
- I put my server IP on Address Reservation to make it static.
- Disabled the firewall stopping it working.
- Tried multiple applications on my computer including: MobaXterm, PuTTY, and Windows Terminal Preview with a copy of Ubuntu 20.04 on it so I can use it as an Ubuntu terminal to SSH from.
- I have both my computer and my server plugged in via Ethernet.
- Uninstalling SSH on the server and then reinstalling it manually.
I've tried diffrent things that use ports or internet connections that didn't work including:
- Mumble server
- Minecraft server
I just want to ask if there is some kind of internet regulation that is blocking traffic from my server, port, or if you could give me some advice on what to do next, that would be great.
Sorry that I couldn't give any exact commands I've used. Whenever I try to connect via SSH to my server it says: Permission denied. And when I used the iptable command
sudo iptables -S I get:
-P INPUT ACCEPT -P FORWARD ACCEPT -P OUTPUT ACCEPT
I also tried
sudo losf -nP -iTCP -sTCP:LISTEN | grep 24
SSHD 905 root 3u IPv4 507 0t0 TCP *:24 (LISTEN) SSHD 905 root 4u IPv4 509 0t0 TCP *:24 (LISTEN)