How to allow a remote host to accept ssh connections?

Question

CVS

Unable to access remote host via ssh.
In the git console, I enter the command ssh [email protected] -p 21
To which I get an error about closing the connection by the remote server (ssh_exchange_identification: connect closed by remote host).
How can I "allow" the remote host to accept connections.
In what there can be a problem?
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The support team replied that it appears that the hosting for users does not have ssh access.

Answer 1

Ssh runs on port 22 by default. Well, it will not be superfluous to check that ssh is installed and running on a remote host.

Answer 2

Probably the problem is that ssh works on port 22, and telnet works on port 21. Try telnet serverip