One of the most common things I do on Linux machines is open ports to test software in a development environment. In the past, that meant trying to remember (and Googling) cryptic iptables commands. Now, CentOS 7 and Red Hat 7 include the nicer firewall-cmd tool to configure the firewall.
Archives For Security
We’ve seen the articles about how to find out if you’re vulnerable to the bash shellshock bug, we’ve also seen the articles on how to patch your system. What I’ll show you is how to find out if people are testing your system.
If you run the CSF/LFD firewall on your server then you’ve no doubt seen the emails complaining about high resource usage for various accounts. This small tutorial will show you how to minimize them.