How do I get the correct IP from HTTP_X_FORWARDED_FOR if it contains multiple IP Addresses?

Question

If Request.ServerVariables[\"HTTP_X_FORWARDED_FOR\"] returns multiple ip\'s, which one do I take and how would I do it in c#? It is my understanding that if it is blank or

Answer 1

I asked some time ago a very similar question.

Getting the client IP address: REMOTE_ADDR, HTTP_X_FORWARDED_FOR, what else could be useful?

As correctly pointed out, you can take the first value considering it to be the client's IP address. But it may as well be company gateway IP.

And anonymous proxies will wipe out information in this header anyway, so it is useful but not reliable.