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Question

Port 22 error! (Timeout error)

Posted February 11, 2021 428 views
FirewallDebian 10

hello everyone, I have an error with port 22/tcp, my private server is in Digitalocean (Debian10), from the terminal “Putty” I have opened port 22, when reboot it generates an error when entering “time out”.

How can I correct this error?

thanks and regards
Camilo A. Pimentel G.

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NOUW3R
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NOUW3R

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2 answers
Daxcor February 11, 2021

Are you using a firewall? Are you letting port 22 through the firewall? Do you have a server running on that port? Need a little more information to help out. What have tried so far to try and trouble shoot the issue?

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  • NOUW3R February 11, 2021

    Yes, the server uses firewall (TCP/80, TCP/443, TCP/5222, UDP/10000, TCP/22, TCP/9090, TCP/30015, UDP/10000), but this firewall activates them by putty, when entering port TCP/22 $ sudo ufw allow 22/tcp the problem began, restart $ reboot the server and it did not let me enter again by putty or by the console in digitalocean.

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Daxcor February 11, 2021

OK, my guess is that you have not allowed ssh. So the only solution is to use the console from do, and login via username/password. If you don’t have a root password for the droplet, then use the reset password feature, (which will reboot the server). then login to the console NOT using ssh. Then edit your firewall. BTW, I have opted to use the DO firewall rather than the ufw on the box. I know some people use both. Using the do firewall prevents you from doing what you just did and locking your self out. Hope this helps.

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  • NOUW3R February 11, 2021

    I could not enter the system, what I did was destroy the drop and create it again, now I use the DO firewall in the server configuration, but I generate errors, apparently the system only works with the ufw box (it makes me strange)

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