Lampwrights Forum - Checking IP's against spammer database

Lampwrights Forum (http://www.lampwrights.com/index.php)

- Pertaining to SPAM (http://www.lampwrights.com/forumdisplay.php?f=10)

- - Checking IP's against spammer database (http://www.lampwrights.com/showthread.php?t=22)

Jeff	07-30-2010 12:27 PM

Checking IP's against spammer database

There is a good free RBL that checks users against a database of known forum spammers. You can check a users IP against it before allowing them to do anything on your site. Here is some example PHP code:

Code:

function blacklisted($ip) 

{

    $dnsbl_check=array("dnsbl.tornevall.org");



    if($ip){

        $rip=implode('.',array_reverse(explode(".",$ip)));

        foreach($dnsbl_check as $val){

            if(checkdnsrr($rip.'.'.$val.'.','A'))

                return $rip.'.'.$val;

        }

    }



    return false;

}

Basically just pass the IP to this function and if it comes back as true, then the IP is listed.

Enjoy!

thisbuzz

01-21-2011 01:07 PM

Hi Jeff .. where should we place this code, please?

In which file

Thanks

G

Jeff	01-21-2011 01:24 PM

Quote:

Originally Posted by thisbuzz (Post 94)

Hi Jeff .. where should we place this code, please?

In which file

Thanks

G

It depends on your code.

thisbuzz

01-21-2011 01:36 PM

OK maybe I am not understanding how this works :)

the above code which starts with

function blacklisted

I thought that the code would check with the SPAM IP site?

so I was wondering where the code would be placed

my apologies in advance if I have the wrong end of the stick

Thanks

G

Jeff	01-21-2011 01:40 PM

If you have some PHP code, and you want to check to see if an IP address is of a known spammer, put the function in the first post of this thread into your PHP script. WHERE exactly I cannot tell you as that is different in every script.

Then you just pass the IP to the function and it will tell you true or false:

Code:

if (blacklisted('123.123.111.123'))

{

## This IP is blacklisted!

}

If you think you can just plug this into any script without any programming knowledge, then I would say no. You have to have some understanding how the code is working. This is a generic function, not a specific one for a particular program.

kpmedia

01-21-2011 01:57 PM

There's a plugin for this: http://www.vbulletin.org/forum/showthread.php?t=176481
Works quite well. :)

thisbuzz

01-22-2011 03:19 AM

Thanks Jeff

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