Other historical ftp solutions: ftpsesame, pftpx

For official addresses on the inside: ftpsesame (OpenBSD + others), fetchable from

http://www.sentia.org/projects/ftpsesame/ (on FreeBSD: - ftp/ftpsesame)

configured via an anchor (sub ruleset), cut and paste from man ftpsesame

pftpx, the next generation ftp-proxy

http://www.sentia.org/downloads/pftpx-0.8.tar.gz, (on FreeBSD - ftp/pftpx) cut and paste from man pftpx