Comments (10)
I know this is an old issue, but this is what it says in etc/fail2ban/jail.d/defaults-debian.conf
:
[sshd]
enabled = true
from how-to-secure-a-linux-server.
I'm setting up a server with on Debian 10 (Buster)
and i'm also getting name 'noduplicates' is not defined
after running sudo fail2ban-client add sshd
However sudo fail2ban-client status
still lists sshd
and even sudo fail2ban-client status sshd
prints the expected output as per README.md
As celine168 and hellresistor already said: looks like you don't have to add sshd on your own since it is enabled by default
from how-to-secure-a-linux-server.
What is the output of sudo grep -i -R noduplicates /etc/fail2ban
?
from how-to-secure-a-linux-server.
The output is completely blank.
from how-to-secure-a-linux-server.
Humm. I am not sure why you are getting that error. I can' find anything in the docs or online. Try posting on https://askubuntu.com/. I will keep looking too.
from how-to-secure-a-linux-server.
I have worked around the issue by removing the [sshd] jail from the default configuration which seems to have cleared up the error, but doesn't really explain what caused it to begin with.
from how-to-secure-a-linux-server.
Did you take a backup? What was in the [sshd] jail from the default configuration?
from how-to-secure-a-linux-server.
fyi, I had the same issue, and simply changing [sshd]
to [ssh]
and then running sudo fail2bain-client add ssh
fixed it. Also, I added the whole section in the /etc/fail2ban/jail.local
file instead of creating a separate one.
from how-to-secure-a-linux-server.
I think Isn't needed add the sshd because are inside of jail.local file and/or /jail.d/defaults-debian.conf
from how-to-secure-a-linux-server.
Closing as this issue seems resolved. Thanks!
from how-to-secure-a-linux-server.
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