A firewall is a program which monitors the incoming and outgoing traffic on your network, and blocks requests based on rules set during its configuration. Properly configured, a firewall can help protect against attempts to remotely access your computer, as well as control which applications can access which IPs.

Objective of this page

Find the best free, open source, E2E encrypted and private alternative to now.

Compare NetGuard vs NoRoot Firewall vs AFWall+ vs RethinkDNS & Firewall vs Lockdown vs SimpleWall vs LuLu vs Little Snitch vs OpenSnitch vs Gufw vs Uncomplicated Firewall vs IPFire vs Shorewall vs OPNSense vs

Discover the best Firewalls tools for Android, iPhone, Linux, PC and Chrome to download now. And choose secure, self-hosted, peer-to-peer and independant alternatives in 2024

Stop the invasion of privacy from big tech, improve data security stay safe.

Word of Warning

There are different types of firewalls, that are used in different circumstances. This does not omit the need to configure your operating systems defences. Follow these instructions to enable your firewall in Windows, Mac OS, Ubuntu and other Linux distros.

Even when properly configured, having a firewall enabled does not guarantee bad network traffic can not get through and especially during boot if you don't have root privileges.

Submit New Entry

Are we missing anything? You can help us improve this page, by submitting a new entry

View all in Networking (16)