This is CSTC version 4.2 of SOCKS, a package that allows Unix hosts behind a firewall to gain full access to the internet without requiring direct IP reachability. It does require a SOCKS server program being run on a hosts that can communicate directly to hosts behind the firewall as well as hosts on the Internet at large. It is based on the original SOCKS written by David Koblas . The package includes full source for the SOCKS server and SOCKSified client programs of finger, ftp, telnet, and whois. A few other SOCKSified clients may be found on ftp.nec.com, in directory /pub/security/socks.cstc. Increasingly, software developers are beginning to include SOCKS support directly into their products, for example, Mosaic, Netscape, Trumpet Winsock, TCP/Connect II (from InterCon for Macintosh; they also intend to do so for their Windows version), OutsideVew for Windows (from Crystal Point, currently in beta).