The following are available without charge. Unless otherwise noted, these files are put in the public domain, available for use without charge or restriction. We do ask that you retain the copyright and authorship information if a file is redistributed or incorporated in another work.
By choosing to download any of these files, you indicate acceptance of the above warranty terms.
NFQUEUE - nfqsniff
If you're building a Linux NFQUEUE application, download this file. This is a complete sample nfqueue handler, nfqsniff, that may be used to sniff packets selected with iptables rules.
A short program that correctly calculates the UDP checksum on both 32 and 64 bit architectures.
OpenVPN Connection Manager CGI script
A small perl CGI script to monitor and manage VPN users on an open VPN server. An expansion of openvpn.cgi as distributed with Net-OpenVPN-Manage-0.02. Requires Net-OpenVPN-Manage and Net-Telnet-3.03 Perl modules. See comments at the beginning. Use with almost any webserver, but mongoose is recommended.
FwBuilder log scan tool
A Tcl script that may be used to search one or more kernel logfiles for interesting firewall entries. Not quite complete, but many useful search features are operational. Logs are assumed to be in the format produced by Firewall Builder. We built this tool because there are times when grep is just not sufficent.