ffproxy is a filtering HTTP/HTTPS proxy server. It
is able to filter by host, URL, and header. Custom
header entries can be filtered and added. It can
even drop its privileges and optionally chroot()
to some directory. Logging to syslog() is
supported, as is using another auxiliary proxy
server. An HTTP accelerator feature (acting as a
front-end to an HTTP server) is included.
Contacting IPv6 servers as well as binding to IPv6
is supported and allows transparent IPv6 over IPv4
browsing (and vice versa).
