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DNSBL/Open Proxy-Blocking · **Released**: 09-14-2005

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

NickCat · #**142** 10-12-2006, 11:57 PM

Quote:

Originally Posted by TMM-TT

Can you see if it has a primary key?
If you think it hasn't, try the command I gave before -
ALTER TABLE proxycache ADD PRIMARY KEY(`ip`);

Hopefully, that'll help..If not, you can try to reinstall the product or use...
OPTIMIZE TABLE proxycache
alt.
REPAIR TABLE proxycache

...instead

I am trying to install this on 3.6.0 and I'm getting the same database errors this user was.

Code:

Invalid SQL:
INSERT INTO proxycache (ip, listed, dateline) VALUES ('75.11.10.116', 0, 1160700950);

MySQL Error  : Duplicate entry '75.11.10.116' for key 1
Error Number : 1062
Date         : Thursday, October 12th 2006 @ 08:55:54 PM
Script       : http://forums.nasioc.com/forums/forumdisplay.php?f=112
Referrer     : http://forums.nasioc.com/forums/forumdisplay.php?f=23
IP Address   : 75.11.10.116
Username     : Unregistered
Classname    : vb_database

And the IPs do already have records, so it's trying to insert a ip that's already been inserted. Shouldn't the code check to see if it's been inserted before trying to insert it again or run an update?

I have the primary key setup properly for ip.

I have repaired, optimized the proxycache table, but still no luck getting away from this error.

Necrosaro420 · #**143** 11-03-2006, 10:35 PM

Quote:

Originally Posted by DementedMindz

TMM-TT do you know if this works on 3.6.x

I get nothing but errors with this sent to my email =(

zagman76 · #**144** 12-06-2006, 11:52 PM

I added 'aol.com' to the 'exclude from monitor' section, but it is still blocking AOL users from registering. as much as i'd like to block AOL users...

... is this a bug or am I doing something wrong?

Thanks!

TrIn@dOr · #**145** 12-13-2006, 12:53 PM

Thanks, really usefull!

StEaLtH666 · #**146** 12-20-2006, 09:05 PM

i have just installed this and first must say thanks

however im having a few problems with a few of my regular behaved members getting blocked, and so far it just seems those who are with pipex, and bulldog isp's but only those with a static ip.

i have added exceptions etc but the only thing i could do to get them working is input their whole ip, whereas id rather be able to put in a partial ip to the exception list such as 81.86.*.* , but this doesnt work.

is there anyway i can make this happen, or maybe possible to add it to an update please

many thanks

zagman76 · #**147** 12-25-2006, 06:33 PM

Quote:

Originally Posted by StEaLtH666

i have just installed this and first must say thanks

however im having a few problems with a few of my regular behaved members getting blocked, and so far it just seems those who are with pipex, and bulldog isp's but only those with a static ip.

i have added exceptions etc but the only thing i could do to get them working is input their whole ip, whereas id rather be able to put in a partial ip to the exception list such as 81.86.*.* , but this doesnt work.

is there anyway i can make this happen, or maybe possible to add it to an update please

many thanks

just out of curiosity - did you try entering the exception as:
81.86.*
rather than: 81.86.*.* ...?

vBul seems to favor the x.y.* format.

I still can't get this add-on to work properly with AOL users.

zagman76 · #**148** 01-16-2007, 04:15 AM

If this setting:

Code:

Block on registration
Only block users on newuser-registrations

is set to "No" - does that make it so this mod checks when people have already registered? In other words - expanding the mod out from only new user registration?

Apophis · #**149** 03-15-2007, 01:30 AM

Quote:

Originally Posted by NickCat

I am trying to install this on 3.6.0 and I'm getting the same database errors this user was.

I have the primary key setup properly for ip.

I have repaired, optimized the proxycache table, but still no luck getting away from this error.

I am encountering the same problems as well. I configured this product to only block new registrations. I assumed that if you only block new registrations it will only check to see if an IP is blocked when a user tries to register. No such luck.

Is there any fix for this "Duplicate entry" issue?

Richy R · #**150** 05-14-2007, 08:33 PM

There is no like manual with it, where on earth do you put it in the ACP??

Richy R · #**151** 05-15-2007, 03:48 AM

worked it out

thanks

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