The authenticating firewall [SSL development files]

 NuFW is an authenticating firewall based on netfilter's NFQUEUE target.
 It allows to write filtering rules based on user identity, in addition
 to classical network criteria. Unless other solutions, NuFW uses a
 strict security model and can apply different access rules to users
 connected on the same host, for example.
 .
 This library provides the files needed to develop an application
 using nussl.