ufw command HowTo - Linux / Unix Q & A from nixCraft

How To Configure Firewall with UFW on Ubuntu 20.04 LTS

last updated May 17, 2020 in Iptables, Linux, Ubuntu Linux

How do I set up and configure firewall with UFW on Ubuntu 20.04 LTS server?

How to delete a UFW firewall rule on Ubuntu / Debian Linux

last updated May 29, 2020 in Debian / Ubuntu, Iptables, Linux, Ubuntu Linux

How do I delete a UFW firewall rule running on Ubuntu or Debian Linux? What is the command to remove ufw rules on a CentOS Linux server? How can I list and remove firewall rules when using UFW?

Linux disable firewall command

last updated April 16, 2019 in Iptables, Linux, Networking, Security

I am a new Linux system administrator. I have a hardware-based firewall, so I don’t need a firewall on each server. How do I disable the firewall on Linux?

Ubuntu 18.04 LTS Set Up OpenVPN Server In 5 Minutes

last updated April 24, 2020 in Linux, OpenVPN, Ubuntu Linux

I am a new Ubuntu Linux 18.04 LTS server user. How do I set up an OpenVPN Server on Ubuntu Linux version 18.04 LTS server to shield my browsing activity from bad guys on public Wi-Fi, and more?

How to open DNS port 53 using ufw on Ubuntu/Debian Linux

last updated May 17, 2020 in Debian / Ubuntu, Iptables, Security

How do I allow incoming DNS tcp/udp port 53 connections from a specific IP address or subnet on a Ubuntu or Debian Linux server using ufw? How can I open DNS port 53 using ufw firewall?

Install and Configure an OpenVPN on Debian 9 In 5 Minutes

last updated April 24, 2020 in Debian / Ubuntu, Linux, Networking, OpenVPN, Security

I am a new Debian Linux version 9 server user. How do I setup an OpenVPN Server on Debian Linux version 9.x or 8.x server to shield my browsing activity from bad guys on public Wi-Fi, and more?

How to open ssh 22/TCP port using ufw on Ubuntu/Debian Linux

last updated January 24, 2020 in Debian / Ubuntu, Iptables, Linux, Ubuntu Linux

How do I allow incoming SSH connections from a specific IP address or subnet on a Ubuntu or Debian Linux server using ufw? How do I open ssh 22/TCP port using ufw on Ubuntu or Debian server?