Re: openssh server remote access

I am unable to access my modem settings page when writing 192.168.1.100 to check if there is a firewall.

Below is the web page that I get

Unable to connect

Firefox can’t establish a connection to the server at 192.168.1.100.

The site could be temporarily unavailable or too busy. Try again in a few moments.
If you are unable to load any pages, check your computer’s network connection.
If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

Any ideas?

Greg Wooledge <greg@wooledge.org>, 21 Eki 2021 Per, 21:32 tarihinde şunu yazdı:

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.