mkdir /home/limit_bw/;cd /home/limit_bw/

wget http://www.webhostingtalk.ir/dl/Software/mod_bw.tar
tar xvf mod_bw.tar
cd mod_bw

apxs -i -a -c mod_bw.c

nano /usr/local/apache/conf/httpd.conf

<VirtualHost 66.197.185.82:80>
    BandwidthModule On
    ForceBandWidthModule On
    LargeFileLimit .rar 1 2000000
    LargeFileLimit .zip 1 2000000
    ServerName webhostingtalk.ir
    ServerAlias www.webhostingtalk.ir
    DocumentRoot /home/webhostingtalk/public_html
    ServerAdmin info@webhostingtalk.ir
<IfModule mod_limitipconn.c>
    <Location /dl>
        MaxConnPerIP 5
        OnlyIPLimit *
    </Location>
</IfModule>

/etc/init.d/httpd restart