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Groups > linux.debian.user > #241572

Re: openssh server remote access

From Greg Wooledge <greg@wooledge.org>
Newsgroups linux.debian.user
Subject Re: openssh server remote access
Date 2021-10-21 23:40 +0200
Message-ID <DaNX4-7bl-17@gated-at.bofh.it> (permalink)
References <DaNaF-6Fb-3@gated-at.bofh.it> <DaNaF-6Fb-5@gated-at.bofh.it> <DaNaF-6Fb-1@gated-at.bofh.it> <DaNu1-71r-3@gated-at.bofh.it>
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On Thu, Oct 21, 2021 at 09:07:02PM +0000, Semih Ozlem wrote:
> Yes the error message is
> 
> ssh: connect to host (ip address of remote host) port 22: Connection refused

This message means one of these things:

1) The sshd process is not running, or is not listening on the default port.

2) A firewall is preventing your connection.


You would normally check the first thing by using "ss" or "netstat" on
the server, and verifying that the process is indeed LISTEN-ing on the
expected interface(s) and port.  For example:

unicorn:~$ ss -ant | grep :22
LISTEN    0      128              0.0.0.0:22                     0.0.0.0:*
[...]

This tells me that something is listning on port 22 on all IPv4 interfaces.

If you don't see a line like this, then you need to investigate the ssh
service more deeply.  Perhaps start by running "journalctl -u ssh" to
read its logs.

If you *do* see a line like this, then you need to look at network-level
stuff, like firewalls, routers, and so on.

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Thread

Re: openssh server remote access Semih Ozlem <semihozlemlinuxuser@gmail.com> - 2021-10-21 22:50 +0200
  Re: openssh server remote access Joe <joe@jretrading.com> - 2021-10-21 23:10 +0200
    Re: openssh server remote access Semih Ozlem <semihozlemlinuxuser@gmail.com> - 2021-10-23 07:50 +0200
      Re: openssh server remote access Joe <joe@jretrading.com> - 2021-10-23 10:40 +0200
        Re: openssh server remote access Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-23 13:30 +0200
  Re: openssh server remote access Semih Ozlem <semihozlemlinuxuser@gmail.com> - 2021-10-21 23:10 +0200
    Re: openssh server remote access Greg Wooledge <greg@wooledge.org> - 2021-10-21 23:40 +0200
      Re: openssh server remote access Semih Ozlem <semihozlemlinuxuser@gmail.com> - 2021-10-22 01:00 +0200
        Re: openssh server remote access David <bouncingcats@gmail.com> - 2021-10-22 01:10 +0200
          Re: openssh server remote access "James B" <portoteacher80@fastmail.com> - 2021-10-22 01:20 +0200
            Re: openssh server remote access "James B" <portoteacher80@fastmail.com> - 2021-10-22 01:30 +0200
        Re: openssh server remote access Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-22 13:00 +0200
          Re: openssh server remote access Eric S Fraga <e.fraga@ucl.ac.uk> - 2021-10-22 13:10 +0200
            Re: openssh server remote access David Wright <deblis@lionunicorn.co.uk> - 2021-10-22 16:50 +0200
              Re: openssh server remote access Eric S Fraga <e.fraga@ucl.ac.uk> - 2021-10-22 19:20 +0200

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