Re: openssh-server

Semih Ozlem <semihozlemlinuxuser@gmail.com>, 17 Ağu 2020 Pzt, 21:03 tarihinde şunu yazdı:

Sorry for the trailing list of emails, I just realized the firewall was preventing the connection. After disabling ssh connection works. However I would like to ask how I can configure firewall so that I can have ssh working, instead of simply disabling it.

Semih Ozlem <semihozlemlinuxuser@gmail.com>, 17 Ağu 2020 Pzt, 21:00 tarihinde şunu yazdı:
also pinging works

Semih Ozlem <semihozlemlinuxuser@gmail.com>, 17 Ağu 2020 Pzt, 20:59 tarihinde şunu yazdı:
Regarding previous question on ssh server
Both machines are in the same home network, connected to the internet through modem.
One machine is running on windows the other on debian. (I tried running the windows machine from debian as well and that did not work either.)
When I run localhost on the debian machine, the openssh-server is running, and can connect to it from the same machine.
When I run openssh-server on the windows machine, I am able to connect to it from debian.
When I run openssh-server from debian, I am not able to connect to it from the other machine regardless of it working as a windows or debian machine.

Greg Wooledge <wooledg@eeg.ccf.org>, 17 Ağu 2020 Pzt, 20:53 tarihinde şunu yazdı:
On Mon, Aug 17, 2020 at 08:49:11PM +0300, Semih Ozlem wrote:
> I am trying to connect to a debian machine with openssh-server installed.
> When I try to connect, I get the message "connection timed out". I am not
> sure if this group is the right place to address this issue, but is there a
> configuration file that needs to be adjusted to fix the issue. What is the
> right place to address this question to

Test locally first: does "ssh localhost" work on the Debian system? If
so, then you know the service is running and working.

Test next from another host on the same LAN as the Debian system. If
that works, then you know there's no firewall preventing access to the
Debian system from the LAN.

Then test from outside the LAN.

You've given no details. How are the client and the server connected?
What command are you running on the client? Specifically, what hostname
or IP address are you using on the client? If it's a hostname, is DNS
resolving it correctly? Are you able to ping the Debian system from the
client?