Question

7

E: Unable to locate package denyhosts

rated 0 times [ 7] [ 0] / answers: 1 / hits: 5327 / 2 Years ago, mon, may 2, 2022, 9:43:30

As I use SSH, I would like to get the denyhosts that I read about here, but when using the command:

sudo apt-get install denyhosts

To install it, I got this error:

Reading package lists... Done

Building dependency tree       

Reading state information... Done

E: Unable to locate package denyhosts

So is this package no longer available then? Or is it just under a different name or something? If this package is no longer available on the main Ubuntu repositories, is there anywhere else from which I can get it?

OS Information:

Description:    Ubuntu 14.10

Release:    14.10

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utonmbo

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answered 2 Years ago algicuade · Accepted Answer

Denyhosts is no longer available. You can use fail2ban or better, a few ssh tips.

Use ssh keys and disable password authentication.

iptables can do essentially the same thing as denyhosts and fail2ban . The advantage is no additional packages are required.

iptables -A INPUT -p tcp -m tcp --dport 22 -m tcp -m state --state NEW -m recent --set --name SSH --rsource



iptables -A INPUT -p tcp -m tcp --dport 22 -m recent --update --seconds 600 --hitcount 8 --rttl --name SSH --rsource -j REJECT --reject-with icmp-host-prohibited



iptables -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT

See:

http://bodhizazen.com/Tutorials/SSH_security

http://bodhizazen.com/Tutorials/iptables#Additional_Tips

On the second link, scroll down a bit. You will need to save and restore your iptables rules.