Drawing the line that separates internal and external networks, Firewall filters traffic based on IP address, protocol and port, which enables administrators to designate which systems and services (HTTP, FTP, etc.) are publicly available.


Firewall can be run as a transparent bridge to complement pre-existing firewall and allows you to control inbound and/or outbound access to specifics IPs and ports.

  • Open source and free under the GNU General Public License (GPL).
  • Easily blocks sessions based on simple rules.
  • Rules can be based on a variety of attributes.
  • Untangle Forums: Firewall
    Untangle Wiki: Firewall

    Match on the following qualifiers:
  • Destination Address
  • Destination Port
  • Destination Interface
  • Source Address
  • Source Interface
  • Protocol
  • Username (requires Directory Connector)
  • User in Group (requires Directory Connector)
  • Free App

    This app is offered free of charge for unlimited use. Enjoy!