To my understanding, HTTPS will not work with transparent interception in a
forward proxy setting.
Regards
HASSAN
----- Original Message -----
From: "goody goody" <thinkodd@xxxxxxxxx>
To: <squid-users@xxxxxxxxxxxxxxx>
Cc: "Pandu E Poluan" <pandu_poluan@xxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, April 28, 2009 17:13
Subject: Re: GURU opinion required.
Ok!
then what would i need to do in my ipfw to make things work accordingly. i
already have natd in place!!!
Thanks,
--- On Tue, 4/28/09, Pandu E Poluan <pandu_poluan@xxxxxxxxxxxxxxxxxxxx>
wrote:
From: Pandu E Poluan <pandu_poluan@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: GURU opinion required.
To: squid-users@xxxxxxxxxxxxxxx
Date: Tuesday, April 28, 2009, 3:01 PM
IMO, you got that wrong.
Squid re-sends the https datagram in a wholly new packet,
with Source IP
Address is the squid's IP Address.
I should know, for my firewall at my office totally block
non-proxy
addresses. Yet employees still can access Gmail and/or
Yahoo!Mail (both
of which use https for authentication purposes).
As usual, CMIIW.
Rgds,
[p]
goody goody wrote:
> after going thru different articles and analyzing the
behavior of squid 2.5 stable10 transparent proxy over
freebsd machine, it is not possible that https requests are
entertained in other words it simply means proxying will not
be done for https traffic.
>
> now let's dvlvle in details.
>
> in case of transparent squid proxy whenever https
traffic is passed through the proxy, proxy does not adds
it's ip addres rather it forwards the packets with original
client ip address located on internal network. the packets
then finally are natted at the firewall with the public ip
address, and operation successfully completes.
>
> but in my case my network colleagues who are managing
firewall device have blocked any traffic originating from
internal network and have only allowed proxy address hence
any https traffic is blocked becoz they have the source
address as internal address not of the proxy.
>
> as it should be, any traffic that leaves the proxy
with the modified source address as of proxy address ,
successfully completes the request.
>
> hence http traffic and https traffic with manual/force
proxy works but transparent proxy with https traffic doesn't
work.
>
> if i am wrong or there is any work around would be
highly appreciated.
>
> Thanks in advance.
>
>
>
>
>
>
>
>
>
--
*Pandu E Poluan*
*Panin Sekuritas*
IT Manager / Infrastructure & Audit
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