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IPT_PKD Iptables Port Knocking Detection 1.7

Posted Jul 9, 2010

Authored by eric

ipt_pkd is an iptables extension implementing port knock detection. This project provides 3 parts: the kernel module ipt_pkd, the iptables user space module libipt_pkd.so, and a user space client knock program. For the knock packet, it uses a UDP packet sent to a random port that contains a SHA-256 of a timestamp, small header, random bytes, and a shared key. ipt_pkd checks the time window of the packet and does the SHA-256 to verify the packet. The shared key is never sent.

Changes: This release adds support for iptables 1.4.7 and 1.4.8 and Linux kernel 2.6.34.

tags | tool, kernel, udp, firewall

systems | linux

SHA-256 | bd0e64702d3c1c0eff1571b731e0817c5f09f7c29c3385b789ab86941664058d

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