Check active connections to web server – DDOS solution

Here are few commands to check the active connection to apache or to any other web server, you can block IPs having too many connections :

Login to SSH and execute following commands with root access:

1.To see what IPs are connecting to server and how many connections exist from each IP:

netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

2.To see how many connections each IP on the server is receiving:

netstat -plan |grep :80 | awk '{print $4}' | cut -d: -f1 | sort | uniq -c | sort -n

3.Get total current active connections to Apache:

netstat -apn | grep :80 | wc -l

Get Apache status update from command line to see which domain is receiving maximum hits (cPanel/WHM server):

lynx http://localhost/whm-server-status

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Enable GeoIP on LiteSpeed web server

This tutorial explains how to install/configure/enable GeoIP location feature on litespeed web server.
Note: You can only use this feature with enterprise license of litespeed web server.

Follow these steps to get it enabled:

First of all download GeoIP location database from official web site (maxmind):

Login to your server via SSH with root access, and execute following commands:
gunzip GeoLiteCity.dat.gz
cp GeoLiteCity.dat /usr/local/share/GeoIP/

Now you have downloaded GeoIP location database, next is to enable it from LiteSpeed control panel.

Follow these steps:

liteSpeed admin console->Server->General
->Enable IP GeoLocation: Yes

liteSpeed admin console->Server->General
->IP to GeoLocation DB: Add
DB File Path: /usr/local/share/GeoIP/GeoIPCity.dat
DB Cache Type: MemoryCache

Last step is to add a line in .htaccess file of your hosting account directory (public_html in cPanel)

GeoIPEnable On

Well you have configured/enabled GeoIP location system.

Now just make a test on it:
Create a php file on your hosting account, and paste below code in it:

$countryName = $_SERVER["GEOIP_COUNTRY_NAME"];
$countryCode = $_SERVER["GEOIP_COUNTRY_CODE"];

echo $countryName.'<br/ >'.$countryCode;

Now run this file from browser it should return your country name and country code.