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Firewalls

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Name Description
Linux-Firewall.org application based personal firewall
Firestarter GTK program for managing and observing your firewall
Guarddog Firewall firewall configuration utility for KDE
IPCop Linux firewall distribution
Shorewall Shoreline Firewall, netfilter configurator
Panda DesktopSecure Panda DesktopSecure for Linux.
Arno's IPtables Firewall single- and multi-homed firewall script with DSL/ADSL support
Firewall Builder Firewall administration tool GUI
FTester Firewall Tester
UFW program for managing a Netfilter firewall
Gufw graphical user interface for ufw
nfqueue A flexible packet handler
PSAD Port Scan Attack Detector
GreenSQL Open Source database firewall used to protect databases from SQL injection attacks
FireHOL easy to use but powerful iptables stateful firewall
APF (Advanced Policy Firewall) policy based iptables firewall
MoBlock blocks connections from/to hosts listed in a file
iplist list based packet handler
Bastille Security hardening tool
ferm maintain and setup complicated firewall rules
DenyHosts Utility to help sys admins thwart SSH crackers
KMyFirewall iptables based firewall configuration tool for KDE
fwknop implements an authorization scheme called Single Packet Authorization (SPA)
NuFW The authenticating firewall [NFQUEUE daemon]