[squid-users] proxy authentication for users hidden behing a NAT device

scenario:
users use a client/browser which is located on the company lan using a private IP address
the company lan is
protected by a firewall which translates all web access into one public IP address
the proxy is implemented as a 'cloud
service' which does only see the translated (nat'ed) public ip for all clients/browsers in this company

i am curious

if there exists a solution which works for IE, firefox, opera, ...

had a look at:
- X-Client-IP header
- Flash Local
Stored Objects
- HTTP Cookies
but neither seems to match for my scenario ;(

any ideas or has anyone implemented such a
solution yet?
thank you
/pat
Received on Sun May 01 2011 - 20:58:30 MDT