Detecting proxy visitors through ASP

some kind of server variable?

[dataguy]

I recall seeing something years ago about detecting if a web visitor is viewing an ASP page through a proxy. Am I just imagining things? Seems like it was a server variable, but I can't find anything on it now.

If this is possible, is it reliable? Seems like a solution to a lot of problems if it works, like flaging form spam bots, automated registrations, etc.

TIA...

[sgietz]

I was able to dig this one up:

Request.ServerVariables("HTTP_X_FORWARDED_FOR")

[Numpty]

There are some people (like me) who use a proxy for legitimate reasons though.

We have one on our office firewall, so everyone accessing the web goes out through the proxy.

[dataguy]

Ah, perfect. Exactly what I need. Thanks!

[aspdaddy]

No, unfortunately its not reliable. I think it basically depends on if the proxy chooses to forward the info.