Logging client IP for non-transparent services through X-Forwarded-For for IIS Server 7 and up.
For non-transparent services where client IP logging is required on a webserver, X-Forwarded-For+(Via) can be configured under Advanced Options of the appropriate virtual service:
Note: This only works for http/https traffic.
The IIS Server has to be configured accordingly.
Advanced Logging will have to be installed and downloaded for this to work:
After installing the Advanced Logging Feature, go to the IIS Manager:
Navigate to the appropriate website, select Advanced Logging and Open Feature.
Click Edit Logging Fields and Add Field
Field ID, a friendly name
Source type, Request Header
Source name, x-forwarded-for (syntax important)
Then click Add Log Definition in the Actions Pane
Give a name to the new definition (no spaces)
Click Select Field under Selected Fields:
Select your new rule from the list:
Click OK and Apply in the Action pane. When you now click Return to Advanced Logging, the new rule will appear:
Now generate some log traffic by navigating to the website and hitting refresh a few times.
Go to your location for advanced logfiles and look for the new logfiles and open.
The default location is LocalDisc>intetpub>logs>AdvancedLogs>Default Web Site.