The net-firewall category contains network firewall software.
| arno-iptables-firewall | Arno's iptables firewall script |
|---|---|
| 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 dshield.org |
| 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 |
| fwbuilder | A firewall GUI |
| fwknop | Single Packet Authorization and Port Knocking application |
| ipkungfu | A nice iptables firewall script |
| ipset | IPset tool for iptables, successor to ippool |
| ipt_netflow | Netflow iptables module |
| iptables | Linux kernel (2.4+) firewall, NAT and packet mangling tools |
| itval | Iptables policy testing and validation tool |
| lutelwall | IPTables firewall setup script |
| nfacct | Command line tool to create/retrieve/delete accounting objects in NetFilter |
| nftables | Linux kernel (3.13+) firewall, NAT and packet mangling tools |
| nufw | An enterprise grade authenticating firewall based on netfilter |
| pglinux | Privacy oriented firewall application |
| psad | Port Scanning Attack Detection daemon |
| rtsp-conntrack | RTSP conntrack module for Netfilter |
| sanewall | iptables firewall generator (fork of firehol) |
| shorewall | A high-level tool for configuring Netfilter |
| ufw | A program used to manage a netfilter firewall |
| ufw-frontends | Provides graphical frontend to ufw |
| xtables-addons | iptables extensions not yet accepted in the main kernel |