If you are a Windows user and are not used to the GNU/LINUX terminal, or if you are starting out in the world of Tux, you would be surprised at the many things that can be achieved by running commands from there. > Package yum.noarch 0:3.2.22-26.el5_5.1 set to be updatedĮrror: failure: repodata/2 from epel: No more mirrors to try.Taskset Cheatsheet | Pandoc Cheatsheet | Curl Cheatsheet | Grep CheatSheet | Cron CheatSheet | Grep CheatSheet | More! Yum update failed in RHEL (Red Hat Enterprise Linux) server 5.5 with EPEL repo ~]# yum update Inspect new firewall settings, notice port changedĪCCEPT tcp - 0.0.0.0/0 0.0.0.0/0 tcp dpt:9876 ctstate NEW Reload firewalld, which will pick up the new port in ssh.xmlĨ. Notice that sshd now listens on new portħ.

Change /etc/ssh/sshd_config port to 9876Ħ. Edit /etc/firewalld/services/ssh.xml to change port numberĤ. Make a copy of the default ssh service file:Ĭp /usr/lib/firewalld/services/ssh.xml /etc/firewalld/services/ĪCCEPT tcp - 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ctstate NEWģ. Think it’s cleaner this way.įor example, here are the steps to change sshd port from the default 22 to 9876:ġ. Instead of messing around with the ports directly with RHEL7/CentOS7 firewall-cmd, I’ve decided to update the port number in the ssh.xml service file instead.

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