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Allow registration only from specified CIDR/IP(s) + include exceptions Details »
Allow registration only from specified CIDR/IP(s) + include exceptions
Mod Version: 1.2.1, by LordOfWAR_PC (Member) LordOfWAR_PC is offline
Developer Last Online: Nov 2013 I like it Show Printable Version Email this Page

vB Version: 4.x.x Rating: (1 vote - 5.00 average) Installs: 13
Released: 16 Jan 2011 Last Update: 18 Jan 2011 Downloads: 85
Not Supported Uses Plugins Re-usable Code Translations  

Mod was updated to the 1.2.1 version.

With using "Allow registration only from specified CIDR/IP(s)" plugin, you can allow registration on your forum only from specified CIDR(NetMask) region(s), like ( or from specified IP addresses (like and e.t.c.). Also you can allow all subnetworks and make an exception for others (ban them) by entering them into exceptions list (check example in the screenshot).

This modification was created using Jonavon Wilcox's PHP functions.

If you want to allow some subnetwork, but you don't know how to write it in CIDR formatting, then you can use for that simple CIDR/VLSM calculator.

If you don't know what means CIDR/VLSM, you can read this article on Wiki - CIDR.

Product was tested on VB 4.0.1, but it also must works on VB 3.x.x - 4.x.x.

Options screenshot :

As we can see from this screenshot, I am allowed all subnetworks (, and denied only subnetwork. But I also used IP exception list and allowed "" IP adress, which is in denied subnetwork.

Error message :

Installation :

Just import xml file as usual VB product.

Uninstallation :

Just uninstall this product as any other VB product.

How to update :

Uninstall and then reinstall product (before that, it is recomended to save your old options into some place).

For multilanguage forums :

After installing of "Allow registration only from specified CIDR/IP(s)" product, you will be able to find and edit needed vbphrases :
  • allowregsfromcidr_error
  • setting_allowregsfromcidr_onoff_desc
  • setting_allowregsfromcidr_onoff_title
  • setting_allowregsfromcidr_masks_desc
  • setting_allowregsfromcidr_masks_title
  • setting_allowregsfromcidr_iplist_desc
  • setting_allowregsfromcidr_iplist_title
  • setting_allowregsfromcidr_cidrexceptionlist_desc
  • setting_allowregsfromcidr_cidrexceptionlist_title
  • setting_allowregsfromcidr_ipexceptionlist_desc
  • setting_allowregsfromcidr_ipexceptionlist_title
  • settinggroup_allowregsfromcidr

(English, Arabic (by Dr.osamA) and Russian language included).

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  • This modification may not be copied, reproduced or published elsewhere without author's permission.
Old 16 Jul 2011, 13:46
Casmos Casmos is offline
Join Date: Mar 2008
Thanks alot, now lets see if it keeps some forum hackers, away from my forum.
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Old 19 Apr 2012, 02:15
MacGuyInNC MacGuyInNC is offline
Join Date: Feb 2012
Anyone know if this works on 4.1.12? I'd love to block some problematic networks.

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Old 25 May 2012, 20:09
MacGuyInNC MacGuyInNC is offline
Join Date: Feb 2012
Upgraded my site to 4.2.

Anyone try it yet? Confirm that it works?
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