I am using a combination of tools to monitor, temporarily ban, and block problem IPs that attempt to brute force SSH on my Ubuntu server. Then allow SSH, so I can manage my server.
First, I installed ufw to easily create firewall rules. Below commands allow me to show all available options...
Firewalls, Linux, Network Security, Python Scripts
The featured site Networksecuritytech.com is back online… check it out… and hit it hard. There is a lot of good content on there… same theme as my blog, but censored….
Expect Scripts, Firewalls, Linux, Microsoft Office, Network Security, Tutorials/Whitepapers, Virus Alerts, Windows, Wireless
$ whatis slackfire
SlackFire is an iptables script written especially for Slackware, my favourite Linux distribution in this corner of the Galaxy. The main purpose of the script is to protect a stand-alone machine or a small network with a stateful firewall. SlackFire isn’t perfect (yet) but have you seen a perfect iptables script?
Firewalls, Linux, Network Security, Tutorials/Whitepapers
Anyway, I hope that README and this screenshot will give an idea of how it works and how it doesn’t.SlackFire may be freely used, modified, and distributed under the terms of the GNU General Public License with any Linux distribution except Caldera and those RedHat releases which are not legally available for free download.Source: http://slackfire.berlios.de/