Rephrase the "cheap nationally" into "cheat inernationally".

----
Eliezer Croitoru
Linux System Administrator
Mobile: +972-5-28704261
Email: elie...@ngtech.co.il


-----Original Message-----
From: squid-users [mailto:squid-users-boun...@lists.squid-cache.org] On Behalf 
Of Eliezer Croitoru
Sent: Wednesday, June 14, 2017 11:09 AM
To: 'David Kewley' <dkew...@uci.edu>; squid-users@lists.squid-cache.org
Subject: Re: [squid-users] source spoofing without tproxy?

Hey,

This is a library I wrote that uses tproxy:
https://github.com/elico/go-linux-tproxy

It’s doable using some enthusiasm but technically you cannot spoof just any IP 
since you need to be able to receive back this traffic.
You cannot really "cheap nationally" the BGP protocol but only for specific 
small areas which are all under your "domain" and management.

All The Bests,
Eliezer

----
http://ngtech.co.il/lmgtfy/
Linux System Administrator
Mobile: +972-5-28704261
Email: elie...@ngtech.co.il


From: squid-users [mailto:squid-users-boun...@lists.squid-cache.org] On Behalf 
Of David Kewley
Sent: Tuesday, June 13, 2017 4:48 AM
To: squid-users@lists.squid-cache.org
Subject: [squid-users] source spoofing without tproxy?

I want my clients to explicitly address squid as a proxy (not use tproxy), but 
have squid spoof the source addresses in the forwarded connection, so that 
further hops know the original source address from the IPv4 headers.

I could find no indication that anyone else has done this, and when I tried 
various things, I could not get it working.

Is this possible today? If not, is it worth considering as a future feature? Or 
am I overlooking a reason that this cannot work even in theory?

I got the nearly-equivalent functionality working for reverse proxying using 
nginx, but so far I've found no way to do it with forward proxying. Nginx 
doesn't do https forward proxying (no handling of CONNECT).

If squid can't do what I'm looking for today, I would welcome pointers to other 
possible approaches.

Thanks,
David

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