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We're trying to get the original 'User-Agent' and client IP Address from our backend IIS logs, but we're seeing only the IP of the F5, and generic USer-Agent entries.
I understand I can get the original client IP by allowing 'X-Forwaarded-For' headers to be inserted, but how about the original 'User-Agent' heaaders ?
The User-Agent header is passed to IIS. Please see:
Advanced Logging for IIS - Custom Logging
or learn more...