How to ban user's IP in vBulletin Forums

Hello Friends
I m running a forum using vBulletin software and there is few user who r creating spam and i banned them so many times but they r again able to create new account.
So kindly help me that how can I get rid of them ? How can I ban their IP ?

 

you can in the admin panel setup

 

If you have more than one domain you better block them at server level since spam once spam twice.

 

You can restrict access to a certain IP via htaccess, if server supports it:

order allow,deny

deny from 123.456.789.0
deny from 123.456.789.1

allow from all

Code (markup):

 

You can either do it through your server, as mentioned above, or if you want to do it via vBulletin you simply go to the settings/options and under user banning options, enter the IP in the Banned IP addresses field.

 

There is no such option in vBulletin.....I tried a lot.

 

We do use IP banning on our VB forum, and yes there is settings for that exactly like Econox said. There are lot of options under settings, just have another look, you will find it.