Actim allows you to send and retrieve files, and to call command line programs on a target machine via emails. The application can handle both synchronous and asynchronous requests with basic security features. It has both command line and graphical user interfaces. This can be useful if, for example, your home PC does not have any access to your office workstation which is behind the company firewall.
DAXFi is a Python script that helps configure several different kinds of firewalls in a consistent way. It can run as daemon to adapt its behavior to external conditions; rules can be described with XML files, XML strings, or generated directly by the code; the program can be configured and extended with a sort of plug-ins written in Python. It comes with a Python package, useful to build other applications aimed to manipulate different firewalls in a uniform way (some example programs are included).
Daemon Shield is a Linux intrusion prevention daemon that scans for brute force break-in attacks in real time and uses iptables to create rules that block the attackers' IP addresses for a configurable period of time. It uses handlers that watch for attacks against given services, such as SSH, telnet, FTP, etc. It is highly configurable through a central configuration file. It loads existing blocklist rules into iptables on startup, and removes the blocklist rules when it shuts down. Other major features include background daemon operation, logging to syslog, easy-to-extend handlers, configurable block duration, and email notifications.
Endian Firewall is an all-in-on Linux security distribution that turns any system into a full-featured security appliance. It features a stateful packet inspection firewall, application-level proxies for various protocols (HTTP, POP3, SMTP), anti-virus support, virus and spam filtering for email traffic (POP and SMTP), content filtering of Web traffic, and a "hassle free" VPN system based on OpenVPN.
Hardened Debian improves Debian GNU/Linux with high security and hardening features, hardened kernels and packages, DHKP, and other security related enhancements. It makes systems more difficult to compromise using common attacks such as race conditions, chroot jail escapes, and buffer overflows.
Joseph is a Python class and program that parses config files into iptables commands. It supports ACL definitions to reduce the repetition of rules. The config file format is a custom, native English-like format that supports internal, external, and DMZ interfaces with allowed, masqueraded, and redirected services (ports).
'NTLM Authorization Proxy Server' (APS) is a proxy software that allows you to authenticate via an MS Proxy Server using the proprietary NTLM protocol. APS has the ability to behave as a standalone proxy server and authenticate HTTP clients at Web servers using the NTLM protocol. It can change arbitrary values in your client's request headers so that those requests will look like they were created by MS IE. It is written in Python 1.5.2.
Nuface is a Web-based administration tool that generates Edenwall, NuFW, or simple Netfilter firewall rules. It features a high level abstraction on the security policy set by the administrator, and works internally on an XML data scheme. Its philosophy is to let you agglomerate subjects, resources, or protocols into meta-objects, and use those meta objects to generate ACLs, which are then interpreted as netfilter rules by Nupyf, the internal XML parser. This tool may easily be extended to support firewall implementations other than Netfilter.