UserHostAddress gives wrong IPs

Question

I collect statistics on IP addresses from where users visit my site and I have noticed what there are only two IP addresses presented, 172.16.16.1 and 172.16.16.248. The pro

Answer 1

Building on Dave Anderson's answer, here is a snippet that takes into account a chain of reverse proxies.

string forwardedFor = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

string ipStr = string.IsNullOrWhiteSpace(forwardedFor) 
                   ? Request.ServerVariables["REMOTE_ADDR"] 
                   : forwardedFor.Split(',').Select(s => s.Trim()).First();