WHM/cPanel – List of all ports and a script to test them
Here is a Bash script to test all inbound cPanel ports: 20 FTP 21 FTP 22 SSH 25 SMTP 26 SMTP 53 DNS 80 HTTP
firewall
Proxmox Firewall Primer
Background Sooner rather than later your servers and routers will be attacked. This is especially so if you run a large network (>100 servers), and
How to deal with abnormally large security_log file on a MikoPBX
At times you might experience abnormally large security_log files on a MikoPBX. This is actually a symptom of a bigger problem, the problem being that
How to enable Remote Desktop Protocol for Administration Purposes on Newly Created Windows 2019 Server
Guide to Enable Remote Desktop for 2 Administrative Users Start Server Manager Local Server Remote Desktop will be disabled. Enable it by clickon the ‘Disabled’.
Unable to ping newly installed Windows 2019 server
TL;DR Guide Search Windows Defender Firewall with Advanced Security Inbound Rules Scroll, scroll, scroll File and Printer Sharing (Echo Request – ICMPv4-In) Click click Enabled
iptables cheat sheet
What is iptables? iptables is a powerful firewall utility for Linux that is often included with the operating system. Behind the scenes many firewalls also
How to check and remove IPs from fail2ban
Background Fail2ban is a really powerful utility and can help you out of a bind. The problem is the syntax – it’s changed and when
How to configure a Firewall for WHM/cPanel to say block port 25 spammers
Description Using a firewall with WHM/cPanel can be confusing and complicated as WHM doesn’t ship with a firewall by default. The two mainstream Linux distributions,
How to setup SSH, Nginx, UFW, and MySQL on a new Ubuntu Server
This quick guide will show you how to set up an NGINX and UncomplicatedFirewall on an Ubuntu Server Update Packages to bring your system up
What is the listen port network interface for MySQL and how can you change it?
Port Number The port number for MySQL is TCP port 3306. See where it’s listening How can you see if it’s listening on more than