A utility for detecting and resisting BIDIRECTIONAL ARP spoofing. It can anti-spoof for not only the local host, but also other hosts in the same subnet. It is as well a handy helper for gateways which don't work well with ARP.
Written as a BASH script, SetFirewall allows the user to manage a linux systems firewall in real time using a text console or SSH. It comes in handy when trying to diagnose routing problems and track network useage. The user must understand the iptables command syntax. It's not for making firewall management easy. It's for visualizing firewall & network activity as well as management.
pfck - pf check - organizes flow information by host
pfck is a perl script that reads the state table of pf and reports back flows based on a supplied port number. pfck is very handy in ddos attacks to identify who's hitting a host or network on a particular port service, and who they are specifically hitting.
Personal firewall for linux desktop and android phone
This is extremely handy for Android Phones, as now most third-party Apps from mobile market is now close-sourced and it's hard to promise its security, but some of this functions may be tempting, so we have to install it and give it permissions what it want at installation stage, and then it may do something we don't like in the background, now with Lavender we can at least prevent from accessing network if we don't trust it.
Allows use of the same port for both a SSH server and SSL (https) server, without needing changes to clients. Incoming connections will be proxied to a SSH or SSL server depending on the protocol spoken by the client. Handy if your home box runs a secure
A simple port-relaying program written in Java; sits on specified ports for either TCP or UDP, re-sends packets to the given IP. Doesn't forward packets, actually receives and re-sends them. Could be handy to learn Java Sockets/networking. Public Domain.