Code to block user agents please?

Hi,

I have a Snitz forum that's getting hit hard by automated posters. I've looked at my logs and amazingly they are all using a unique user agent and I can eliminate 99.9% of this spam by blocking it or redirecting to a 404 or something.

Is there any chance someone can post some suitable code for this? It doesn't have to completely accurate, I know a little asp, I just don't know where/how to start coding this. Green given for all answers...

Cheers,
Paz.

 

if request.server("HTTP_REFERER") = "thespam.com" then
response.redirect "404.asp"
end if

 

Thanks for that, I'll get to work!

 

Just in case anyone's interested, here's the code that seems to work OK;

 

Are you sure about the ServerVariable syntax?
It should be

RefAGENT = Request.ServerVariables("HTTP_User_Agent")

Code (markup):

instead of

RefAGENT = Request.ServerVariables("HTTP_User-Agent")

Code (markup):

 

Yes, thanks for that, I thought it worked but I obviously didn't test it properly. I've been racking my brains trying to get it working, there was another problem with the other anti-spam code, so here's something tested with a custom user agent using a Firefox extension;