What are TCP Wrappers? How do I find out if program / server / service is compile with TCP Wrappers? What are the advantages and disadvantages of TCP Wrappers over Firewalls like netfilter or pf? How do I protect my Mac OS X or Sun Solaris or Linux workstation using TCP Wrappers?
tcpd is use to access control facility for internet services. The tcpd program can be set up to monitor incoming requests for telnet, finger, ftp, exec, rsh, rlogin, tftp, sshd and other services that have a one-to-one mapping onto executable files. Your sshd server must be configuring (compiled with) to support tcpd. You can find [...]