All packages

fwbuilder GUI management for iptables, PF, Cisco ASA/PIX/FWSM, Cisco router ACL and more
arptables set up, maintain, and inspect the tables of ARP rules in the Linux kernel
conntrack-tools Connection tracking userspace tools
dshieldpy Python script to submit firewall logs to
arno-iptables-firewall Arno's iptables firewall script
ebtables Controls Ethernet frame filtering on a Linux bridge, MAC NAT and brouting
ferm Command line util for managing firewall rules
firehol iptables firewall generator
firewalld A firewall daemon with D-BUS interface providing a dynamic firewall
fwknop Single Packet Authorization and Port Knocking application
ipset IPset tool for iptables, successor to ippool
ipt_netflow Netflow iptables module
psad Port Scanning Attack Detection daemon
rtsp-conntrack RTSP conntrack module for Netfilter
shorewall A high-level tool for configuring Netfilter
xtables-addons iptables extensions not yet accepted in the main kernel
ipkungfu A nice iptables firewall script
nfacct Command line tool to create/retrieve/delete accounting objects in NetFilter
nufw An enterprise grade authenticating firewall based on netfilter
pglinux Privacy oriented firewall application
sanewall iptables firewall generator (fork of firehol)
iptables Linux kernel (2.4+) firewall, NAT and packet mangling tools
itval Iptables policy testing and validation tool
lutelwall IPTables firewall setup script
nftables Linux kernel (3.13+) firewall, NAT and packet mangling tools
nftlb nftables load balancer
ufw A program used to manage a netfilter firewall