If you are NAT’ing public to private addresses with a load balancer in between your web server and your Gateway/FireWall device you might come across the situation where the IIS/Apache logs report the IP of the Load Balancer, when what you really want, is the client IP.
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<span style="color: #339966;">203.123.4.100</span> - - [29/Jun/2012:00:12:43 +0800] "GET /test.html HTTP/1.1" 404 261 "-" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)" <span style="color: #ff0000;">172.20.0.16</span> - - [29/Jun/2012:00:12:45 +0800] "GET /test.html HTTP/1.1" 404 261 "-" "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)" |
It’s obvious that the biggest issue with […] Read More