* nagiosplug - nagios plugins
- net-snmpd - simple network management protocol daemon
- nut - network ups tools
- fwknopd - single packet authorization and port knocking
- monkeysphere - use gnupg web of trust for ssh fingerprint authentication
- openntpd - paranoid network time protocol daemon
- spd - password store
- sudo - manage root access
- openldap
- simon wilkerson ssh patches
- libgssapi
- stunnel
- sudosh
- eas
- kerberos
- ssh patch that does nifty thing
- nmap
- openvpn
- ossim
- ossec
- fail2ban
- dnsmasq
- http://www.doxpara.com/
- icmptx - ip over icmp
- nstx - ip over dns