I cannot SSH into my Ubuntu VM from another computer

Question

I cannot SSH into my Ubuntu VM from another computer, Port 22 is open from the internet. I was able to do it, after restarting the VM I cannot connect anymore. I have also followed the trouble the shooting guide with no success. From my local machine, when I try to connect into my ubuntu VM on azure, I get a connection timed out error.

Answer 1

Hi @Mbongeni Maiketso

Have you reached all the NSG rules? follow the troubleshooting on this thread

https://learn.microsoft.com/en-us/answers/questions/1290947/azure-vm-rdp-connection-problem

You can try to connect via serial console too, and access your Linux and check if there are any restrictions,

Reference: https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/serial-console-linux

 

You can disable the firewall for test (systemctl stop ufw) systemctl stop firewalld and Iptables -F

or

setenforce 0

 

Remembering that usually ssh root login is blocked

Get in touch if you need more help with this issue.

--please don't forget to "[Accept the answer]" if the reply is helpful--

Answer 2

I cannot connect from my local machine, even using telnet.

Answer 3

Hi,

Welcome to Microsoft Q&A community forum!

Did you check if the ssh service is up?

check with

sudo systemctl status ssh

if it's down use

sudo systemctl start ssh

to start it

also check if it's listening on port 22

sudo netstat -lntp | grep 22

try also to connect form the server itself using

ssh user@127.0.0.1

let me know the output

Cheers

Luca

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Answer 4

• to check for a remote port you may try Port checker website
• to check for a local port try sudo netstat -ntlp from a linux machine