Are there any open source firewalls for linux that
- can be installed on a server and bring their own linux OS?
- have a graphical user interface?
Would be great if the firewall
- would be based on Debian linux
- is still supported by an active community
The ones I found are all commercial and not suitable for usage in small enterprises.
PS: I know I could just fiddle with IPTables, but I wondered if there is a product that does not make me to do that.