RHEL (RedHat Enterprise Linux) and CentOS 7 introduces firewalld which is now installed by default instead of iptables. This might get a little technical, but hang in there. The same applies if you want to master security with Linux. If you are responsible for building Linux hosts for web applications then this will be an especially important topic for you. In my last post, you learned all about systemd and hopefully are now comfortable with the switch from SysV init. Securing your Linux host is, in my opinion, the first thing you should be doing before hosting any web services. Essential Linux Skills with CentOS 7 – Secure Firewall with iptablesįollowing the theme for ELS (Essential Linux Skills) with CentOS 7 (see part 1), today I want to share what I consider to the the most important topic of the lot.
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