HacksLinux SysAdmin Notes
This article describes how to install and configure Fail2ban on CentOS/Ubuntu and similar Linux distributions, how to protect SSH server from brute-force attacks and how to manually unban IP address that was banned by Fail2Ban.
Iptables is a built in firewall in most Linux distributions.
Sometimes it is required to stop iptables for troubleshooting the network related problems.
In this article you'll learn how to check the current status of the iptables firewall, and how to disable or enable it in CentOS, RHEL (Red Hat Enterprise Linux), Fedora and similar distributions.
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