Add-On Releases - DNSBL, RBL - Open Proxy monitoring/blocking

History

I've had some problems with abuse via open proxies for a time ago, and when we were banning abusers, they always found a new proxy to use and register new accounts with. Since this forum was a large type we could'nt just ban e-mails etc just like that, because this was leading to a very large amount of other banned users too.

At IRC, in the other hand, we had Open Proxy Monitors, that was banning everything that was blacklisted in some DNSBL-databases. No spammers had a chance to get in there as long they were listed in such database.

This is a plugin that blocks blacklisted hosts from some different DNSBL's. It uses the global_start-hook, a very simple handler for blocking proxies, and a vBphrase called OPM_Deny.


April 2006

The source has been rewritten a bit. The proxychecker is now using a cache that, by default, stores all ip's in a database for 6 hours. It scans some DNSBL's and can be configured to block proxies from bitmasks (defined in the plugin) which makes it a little bit more reliable, because it does'nt block everything it see).

Configuration is made from the plugin (hopefully there will be a nice admin interface in the future). Exceptions (ip's that can pass through this system even if it is a proxy) are also handled differently now.

// CHANGES
//
// 2008-09-20 (2.0.8)
//
// * Changed the routines for how to handle inclusion/exclusions
// * Splitted up plugins for 3.5/3.6 and 3.7
//
// 2007-08-05
//
// * Fixed reported bug, based on resolved hosts ending with 127
// * Changed database-tables to get rid of (hopefully) duplicate keys
// * Added resolver-function
// * Added two new block-methods available at the efnet-rbl
//
// 2006-06-28 (2.0.6/Another fix)
//
// * Proxyinclusions/exclusions didn't work properly
//
// 2006-06-28 (2.0.5/Fix only)
//
// * Fixed a bug in the $block-array that affected some of the blocking results
//
// 2006-06-28 (2.0.4)
//
// * opm.tornevall.org has a new entry for anonymizers, added support for this
// * Default value on "block everything detected" in plugin changed to "no"
//
// 2006-06-26 (2.0.3)
//
// * Created options for admincp (removed plugin-configuration)
// * Fixed a bit-bug for njabl
// * Plugin is now a function (rbl_livecheck) for external lookups
// * Added options for "only block on newuser-registrations"
//
// 2006-06-22 (2.0.3 RC)
//
// * The monitor is now a function
// * Added small compatibility with other plugins (with return)
//
// 2006-05-13
//
// * sorbs zones added (no bitmasking)
// * opm.blitzed.org removed
// * time() changed to TIMENOW
//
// 2006-04-21
// ==========
//
// * proxyinclusions
// quickly add own hosts that should be treated as a proxy
//


How does it work with other vBulletins?

This filter actually works with both 3.5 and 3.6, but for now, they will be separate versions, but for 3.5 and 3.6 you should look here and for 3.7 you should look here.


How to use the compatibility thing

If you have a plugin that you want to use together with the proxy monitor (only returns a value if a an ip-address is registered as a proxy or not) you can call the function rbl_livecheck like this (example):

PHP Code:

global $rblInstalled;

if ($rblInstalled) {
$remoteIsProxy = rbl_livecheck(1, $_SERVER['REMOTE_ADDR']);

//
// .. your code here ..
//

} 


Report bugs if you find them...



Don't forget to install it

[TMM-TT]

Originally Posted by vissa

How does this plug-in compare to the old "Check Proxy RBL on New User Registration." plugin below (that still works with 373)?

https://vborg.vbsupport.ru/showthread.php?t=131852

-vissa

I haven't tested that version yet, but I think it should do the same as this.

Originally Posted by simonhind

is there a way to allow only admin login, if your at an open proxy ?

for 3 days now since i used this, its not blocked me, however for some reason, its saying i am blocked

thi is the message

You have been denied access to this forum. The reason is that you are visiting us from a place that has been blacklisted as an Open Proxy. You have to fix this, and return.

If you want to know exactly where you are blacklisted, go see www.tornevall.net/cgi-bin/ip.cgi

You should be able to reach admincp and add yourself to a whitelist.

Attachment 87932

But why not? I'll look into some kind of "override protection on fly"-function too for the next version..

[rapidphim]

are we blocking from registering? posting? or accessing the site?

[TMM-TT]

Registration-checks only blocks registrations. The other option is site-blocking.

[Sixpackmark]

Hi,

i've installed your software, for two weeks already. Just today i got 200+ DB error showing this.

++++++++++
Invalid SQL:
INSERT INTO vb_proxycache (ip, listed, dateline) VALUES

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Tuesday, October 28th 2008 @ 11:05:42 PM
Error Date : Tuesday, October 28th 2008 @ 11:06:11 PM
++++++++++

[troybtj]

If you are getting "MySQL Server has gone away", the forum won't be running, assuming they are talking to the same database server (MySQL).

You will get an error for every "hit"/request/visit on the forum.

Check your system / processes.

[transparent]

Not sure if this can be answered but what kind of server load does this add if it's checking new registrations and posts?

I have a large board with alot of new posts. My 1st thought would be that it would impact the load significantly.

[mindhunter77]

Originally Posted by transparent

Not sure if this can be answered but what kind of server load does this add if it's checking new registrations and posts?

I have a large board with alot of new posts. My 1st thought would be that it would impact the load significantly.

This was my question as well.

[nso]

So.. I only wanted this script to be active at registration -- but still saw a dramatic reduction in performance on calls to global_start in all other locations.

I made the following adjustement;

if ($vbulletin->options[rblblockonregister] == 1 AND $rbllocation != "register") {return 0;}

Added right after the global-line in function rbl_livecheck. There is really no need to be running all this code on all calls to global_start if the rblblockonregister switch is on.

[TMM-TT]

Added to the planlist!

http://forum.tornevall.net/project.php?issueid=993

[SEW810]

geee, something was wrong with my vb 3.7.2
Uninstalled but congrats. Pretty cool mod.