Adding a new custom field eg. xff-ip
to have remote client ip from x-forwarded-for
request header
Add-WebConfigurationProperty -pspath 'MACHINE/WEBROOT/APPHOST' -filter "system.applicationHost/sites/siteDefaults/logFile/customFields" -name "." -value @{logFieldName='xff-ip';sourceName='X-FORWARDED-FOR';sourceType='RequestHeader'}
Or for a specific site:
Add-WebConfigurationProperty -pspath 'MACHINE/WEBROOT/APPHOST' -filter "system.applicationHost/sites/site[@name='My Super Site']/logFile/customFields" -name "." -value @{logFieldName='xff-ip';sourceName='X-FORWARDED-FOR';sourceType='RequestHeader'}
Removing your added custom logging field eg.xff-ip
Remove-WebConfigurationProperty -pspath 'MACHINE/WEBROOT/APPHOST' -filter "system.applicationHost/sites/siteDefaults/logFile/customFields" -name "." -AtElement @{logFieldName='xff-ip'}
Or from your site only
Remove-WebConfigurationProperty -pspath 'MACHINE/WEBROOT/APPHOST' -filter "system.applicationHost/sites/site[@name='My Super Site']/logFile/customFields" -name "." -AtElement @{logFieldName='xff-ip'}