tportknockd is lightweight but complete and fast port knocking daemon for Linux. It uses no extra libraries and is need about 30kByte space. Therefore it is most eligible for embedded networking devices like SOHO routers.
Intelliarp watch net devices and automatic allow or deny access from mobile machines (like notebooks) in an Intranet, using ARP for MAC registration.The mobile can use any configuration(fix IP or DHCP) and Intelliarp will give control on it.
yafingerd is a new concept in finger daemons. Created with security in mind, if offers various features that makes it the best choice for security, without loosing features that one might want.
Fully tested on AIX, Linux, Solaris and FreeBSD.
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