On the client side, SFZ access to FileZilla has recently ceased. As error reports: "Connection timed out".

At the same time, SSH access to PuTTY also stopped. The error is the same. This is exactly on the client side, since it connects from another machine successfully. Avast Anti-Virus, but it also stood when it was accessed. The windows firewall is disabled.

  • I would not be so categorical that it is exactly on the client. First, the server can block incoming connections over the connecting ip. Secondly, the port can be blocked for some reason somewhere on the route to the target server - Mike
  • The first is definitely not. How can I check the second? - Urukhay
  • Do you have any other server where you can try to connect? It is unlikely that blocking, if it is somewhere close to you, acts only on specific servers, it should block port 22 anywhere. Ideally, of course, it would be on the target server to make sure that requests do not reach at all, but for this you need root on that system. By the way, whence the confidence that the target server does not block? - Mike
  • Appealed to their support, they figured it out. To any server on 22 is closed. - Urukhay
  • Downloaded VPN, using VPN connects! What does this mean? Is the provider naughty? - Urukhay

1 answer 1

perhaps somewhere along the way, packets are blocked based on the port number.

Try on the server in the program that implements the ssh protocol, specify another port for incoming connections and specify this port in the client program.

if the program is listening in the openssh implementation, then in the /etc/ssh/sshd_config file you can specify several ports like this:

 port 22 port 12345 ...

program after making changes, of course, need to restart.

  • Downloaded VPN, using VPN connects! What does this mean? Is the provider naughty? - Urukhay