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Bouncer

Bouncer is a firewall, available on Linux.

  • Completely free
  • Linux
  • Open source
  • No account

At a glance

All of Bouncer is free: no feature is locked behind a paid plan, and its code is open.

Its licence (MPL-2.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • No account needed
  • Commercial use allowed

About

Bouncer is an application to help you choose the correct firewall zone for wireless connections. When you connect to a new network, a window opens prompting you for what kind of network (eg home, public, work) it is. When you choose the network type, it is associated with that network and automatically used in the future. NetworkManager and firewalld are required. If you don't use those, you can't use Bouncer. Fedora uses both by default. Other distributions may not. Additional setup is required after installation. See the applicable section for your distribution. Once the setup is done, start Bouncer and confirm your system is configured correctly. Then click the Monitor button to begin using Bouncer. After that, it will start automatically when you log in. Fedora For Fedora, everything just works! Just start Bouncer to confirm, and click the Monitor button to begin using Bouncer. Ubuntu Uninstall ufw: sudo apt remove ufw Install firewalld: sudo apt install firewalld By default, polkit is configured to not let regular users set the zone for a connection. The simplest way to change this is to add users to the netdev group (eg usermod -a -G netdev justin). Alternatively, you can create a custom polkit rule for the org.freedesktop.NetworkManager.settings.modify.system action (how to create custom polkit rules is beyond the scope of this document and is left as an exercise for the reader). Start Bouncer and confirm your system is configured correctly. Then click the Monitor button to begin using Bouncer. Debian Install firewalld: sudo apt install firewalld By default, polkit is configured to not let regular users set the zone for a connection. The simplest way to change this is to add users to the netdev group (eg usermod -a -G netdev justin). Alternatively, you can create a custom polkit rule for the org.freedesktop.NetworkManager.settings.modify.system action (how to create custom polkit rules is beyond the scope of this document and is left as an exercise for the reader). Start Bouncer and confirm your system is configured correctly. Then click the Monitor button to begin using Bouncer.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) —
  • Last technical check: 6 November 2026
  • Description from Flathub — AppStream (Flathub)

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