[squid-users] [feature request]: Transparent FTP Proxy

Amos Jeffries squid3 at treenet.co.nz
Sun Oct 4 05:11:42 UTC 2015

On 4/10/2015 10:04 a.m., David Touzeau wrote:
> Hi
> Since the 3.5.x branch allows FTP gateway, is there any plan to support
> transparent FTP proxy ?

FTP gateway has been supported since Squid-2.4 or something.

FTP relay/proxying is what what added in Squid-3.5.

"Transparency" is a protocol defined set of requirements in HTTP. It
does not mean anything like what most people use the word to mean.

FTP does not even define a role for proxying, so does not define what
would be necessary for proxy to act transparently. We made an educated
guess and implemented that. It seems to work.


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