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IPT_PKD Iptables Port Knocking Detection 1.5

Posted Dec 5, 2009

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 1.4.4 and 1.4.5 and kernels 2.6.30 and 2.6.31.

tags | tool, kernel, udp, firewall

systems | linux

MD5 | 4218bd5790110e326b8e61508a54b6fa

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