In this guide, we’re going to look at how to secure your Zimbra collaborative suite on CentOS 7, Debian and Ubuntu server using Firewalld and Ufw respectively. If your server is running CentOS 6.x, you can use UFW or raw iptables commands for it, but the port numbers remain the same.Original content from computingforgeeks.com – … Continue reading Zimbra Firewall Configuration with Ufw & Firewalld