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web usage reports after PAT to external scansafe web proxy service

Posted on 2012-12-23
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Hi We recently put a  NAT /PAT  inside to outside interface (on ASA firewall) and port 80/http to 8080 port forward -direct to Cisco's scansafe proxy servers IP address on the web.
We  have some "exceptions" for http sites we dont want filtered - these are ok and also listed in the ASA firewall

We did this to solve a number of problems

1. Apple IPAD's - wifi - avoid manual proxy in browser
2 avoid manual proxy entry for all different types of browser
basically now proxy config is all in the ASA firewall.

Problem is now that due to the ASA NAT the scansafe reports show only the "outside" IP as the no1 user - basically the only user. - so now i cant get meaningful web usage reports.

Before with proxy ticked in users client browser - THe reports showed individual usage.
I want to keep what we have done on the ASA - I dont want to do a PAC file etc.

Does anyone know how I can go about getting the Scansafe to show individual web usage again? - something i can do on ASA?
  Thanks
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Question by:philb19
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btan earned 1500 total points
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looks similar to this issue raised

using syslog and do manual mapping  - doesnt seems operationally friendly
https://supportforums.cisco.com/message/194755#194755

"Another way might be to add an access-list on the inside interface and add logging to " ip any any " which would be logged to the syslog server. But this might cause a lot of traffic for the syslog server."

also saw in  scansafe help doc stating below
https://scancenter.scansafe.com/portal/static/help/ScanCenterHelp/WSAAP3.html

(in case you need) online help - https://scancenter.scansafe.com/portal/static/help/ScanCenterHelp/

"Cisco ASA 5500 Series Adaptive Security Appliances with version 8.3 or later of the operating system can be configured to enable user names, internal IPs, and domain groups to be sent via PIM to Cisco Cloud Web Security without needing to make end-user changes. There are several ways to achieve this but Cisco recommends using explicit proxy, PAC file or WPAD."
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