Zimbra OSE CentOS 7 kernel update fails server does not boot
Reading Time: < 1 minutes Problem: Zimbra OSE trying to update CentOS 7 server kernel gives error(s), and after reboot server does not boot. Clue: …
RHEL/CentOS
How to verify Linux server is secure?
Reading Time: 6 minutes How to verify Linux server security? How you can be sure that the system is fully secured? Bad news is …
How to open MySQL default port for remote connections on RHEL/CentOS (iptables/CFS)
Reading Time: < 1 minutes In some situations you might need to open MySQL port for remote connection. That might be the case, for example …
How to add custom iptables rules with CSF
Reading Time: < 1 minutes Configserver Security & Firewall (CSF) is well known iptables based firewall for Linux (Iptables is application used to configure tables, …