Long story short most used iptables rules! (once forever)
Linux Block Port With IPtables Command - nixCraft
What is the best way to block and restrict Linux user traffic to particular sites? Just leverage the iptables functionality built into the OS. - Tech Blogs
How to block ip in iptables – Linux Hub
The Beginner's Guide to iptables, the Linux Firewall
iptables command in Linux with Examples - GeeksforGeeks
That's Why Iptable Is Not A Good Fit For Domain Name? – DEVOPS DONE RIGHT
Centos 7. How to Block Website using iptables rules - YouTube
web - How can I block a specific URL on a DD-WRT router? - Unix & Linux Stack Exchange
How to list all iptables rules with line numbers on Linux - nixCraft
How To Setup an Iptables Firewall to Enable Remote Access to Services in Linux - Part 8
How to Block Certain Website Access on Linux | 2DayGeek
networking - Blocking Websites by days and hours using Iptables in OpenWRT - Unix & Linux Stack Exchange
How To Block A Website In Linux Using Iptables? – CertSimple.com
An In-Depth Guide to iptables, the Linux Firewall - Boolean World
Protect yourself with the iptables firewall - Linux Kamarada
How To Setup an Iptables Firewall to Enable Remote Access to Services in Linux - Part 8
Protect yourself with the iptables firewall - Linux Kamarada
Configure Firewall(IPtables) in UBUNTU to block a website, port ,Program || INS || RC - YouTube
Controlling Network Traffic with iptables - A Tutorial | Linode
How To Setup an Iptables Firewall to Enable Remote Access to Services in Linux - Part 8
16 iptables tips and tricks for sysadmins | Opensource.com
Linux Basics for Hackers, Part 11: Linux Firewalls (iptables)
