socks4-clients binary package in Ubuntu Xenial amd64

 This is version 4.3 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 <koblas@netcom.com>.
 .
 This package includes 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.

Source package