This is frox, a transparent ftp proxy by James Hollingshead.
Current features include:
o rfc959 compliant (I think) transparent proxying of ftp
connections.
o active --> passive mode conversion for data connections.
o Optional caching support either locally or through an external
HTTP cache.
o Optional virus scanning
o Optional non-transparent proxy support by logging in with
user@host:port.
o Options to bind to a specific interface, chroot, and drop
priveleges for security.
WWW: http://www.hollo.org/frox/
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