Re: Filtering JSP page based on client IP

From:
Lew <lew@nowhere.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 10 Jan 2007 08:47:08 -0500
Message-ID:
<0Yqdnaw09snBcznYnZ2dnUVZ_vjinZ2d@comcast.com>
Mich wrote:

Because of local content rules I have to make some website pages
unavailable for browsers in Canada. Since I am in Canada and I obviously
need to view those pages I need some code such as

if(IP==canada) {
  if(IP!=my IP) {
     This page is not available in Canada
 }
}

I did a Google search on this and everything I found was about filtering
the complete website; and I would really like to be able to do this for
individual pages.


I have used <%=request.getRemoteAddr()%> but what I get is the IP address of
the server.


Generally it is not reliable to use IP address to determine where the browser
is. Too many times the address recoverable is of some intermediate node
(firewall, "Web Seal" server, ...) or otherwise not the "real" IP address of
the sender. Also, I do not know how to reliably correlate IP address with
national origin - you must be digging deeply into DNS records, eh?

Doesn't that just kill performance?

- Lew

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