xL2TPD is our Layer 2 Tunneling Protocol (L2TP) daemon for use on Linux system. This is typically used with Openswan to do L2TP over IPSec, and is designed to support Microsoft Windows XP/2003 and Apple OSX Native VPN clients.
Xelerance offers consulting and customization of FreeRADIUS. FreeRADIUS is a complete implementation of the RADIUS protocol for Linux & Unix operating systems which allows one to set up a RADIUS protocol server, which is usually used for authentication and accounting of users. FreeRADIUS is a community effort, produced under GPL.
DNSSec is the next generation DNS system, which provides secure and authoritative DNS lookups. DNSSec was recently ratified as an IETF standard – RCF4033, RCF4034, RCF4035. Xelerance has written dnssec-conf which is a utility to configure and prime DNSSEC and DLV.
sshfp is a small utility that generates RFC4255 SSHFP DNS records based on the public keys stored in a known_hosts file or obtained by using ssh-keyscan (1). If the nameserver of the domain allows zone tranfers (AXFR), an entire domain can be processed for all its A records. These can then be easilly added to a zone, and then secured by DNSSEC.
On Fedora based systems, you can install it using yum install sshfp.