KSB26, Kernel Socks Bouncer for 2.6.x, is a Linux 2.6.x-kernel patch that redirects full tcp connections through a socks5 proxy. KSB26 uses a character device to pass socks5 and the target IPs the the Linux kernel. This is obviously quite useful if you want to transparently tunnel certain things through a given proxy to remain anonymous, or if you want to transparently be able to sniff certain network traffic.
You can download it from the following link: https://packetstormsecurity.com/files/download/36435/ksb26-2.6.11.tar.gz
Source: https://packetstormsecurity.com/files/36435/ksb26-2.6.11.tar.gz.html