On 10/21/22 2:25 AM, Matus UHLAR - fantomas wrote:
apparently this is a hack to be able to define proxy autoconfig in
the location field.
Since it has very restricted capabilities, it's apparently non-issue.
I guess that you can only define FindProxyForURL() this way.
On 21.10.22 11:25, Grant Taylor wrote:
From memory, the only effective difference between explicit proxy mode
and transparent proxy mode (from Squid's point of view) is the use of
the `CONNECT` vs `GET` et al, command and how the hostname is
specified.
if by "transparent" you mean "intercepting" proxy, that is incorrect
CONNECT is HTTP command designed for use with explicit HTTP proxy.
I think Adam Meyer also explained it nicely.
Yes, Adam said that 3128 is a /convention/.
ok, there's no explicit need. And since there's no explicit need to use port
80 for HTTP proxy, the convention is to use different port because of
reasons stated before.
I repeat, FTP protocol does not support proxies and port 21 would be
of low usage here.
I remember reading things years ago where people would use a bog
standard FTP client to connect to an /FTP/ server acting as an /FTP/
proxy. I believe they then issues `OPEN` commands on the /FTP/ proxy
just like they did on their /FTP/ client. -- My understanding was
that this had absolutely /nothing/ to do with /HTTP/, neither protocol
nor proxy daemon. Nor was it telnet / rlogin / etc. to run a standard
ftp client on a bastion host. Though that was also a solution at the
time.
On 21.10.22 11:51, Grant Taylor wrote:
I knew that I had seen something about using an FTP proxy that wasn't
HTTP related.
I encourage you to read ~/.ncftp/firewall for more details.
Conveniently copied below.
I'd like to point out two things:
1) The syntax and ports used only reference FTP.
2) The 'NcFTP does NOT support HTTP proxies that do FTP, such as
"squid" or Netscape Proxy Server. Why? Because you have to
communicate with them using HTTP, and this is a FTP only program.'
So ... yes, I am quite certain that there are FTP /proxies/ that are
NOT using HTTP.
These are the FTP protocol "hacks" I mentioned before.
The HTTP protocol was created with proxying in mind, FTP was not.
using specially crafted login name for connecting to anoter server is one of
those hacks.
--
Matus UHLAR - fantomas, uhlar@xxxxxxxxxxx ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
The 3 biggets disasters: Hiroshima 45, Tschernobyl 86, Windows 95
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