How to Configure Mikrotik hotspot default queue

  When you configure a hotspot with Mikrotik, routerOS always creates a default queue called hs-<hotspot1> allowing unlimited speed both directions. You can delete the queue, but it will come up again after restart. The problem is that this queue will override simple queue which are below it and speed limitation of hotspot users will not work properly. This can be easily avoided by the script : :foreach i in=[/queue simple find name=”hs-<server1>”] do {/queue… Read More

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Address Resolution Protocol(ARP)

ARP Means Address Resolution Protocol. its used for Decision of internet Layer Address into data link layer. ARP basically used mapping a network address into Physical Address(MAC Address). ARP has been implemented with mixed network layer and data link layer. Type of ARP ARP The ARP Message (“who is X.X.X.X tell Y.Y.Y.Y”, where X.X.X.X and Y.Y.Y.Y are  IP Address’) is send using Ethernet Broadcast, and an Ethernet protocol type of value 0x806. Since it is broadcast, it… Read More

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How To Install and Configure Nagios in CentOS

Nagios is a monitoring solution for complex IT infrastructures, Nagios is easy to implement and can be extended by custom-modules, called plugins. In this howto I explain howto install Nagios on a CentOS host and make the configuration for it. Install Nagios in order to watch server’s status. httpd is also needed. [1] Install Nagios [root@ns ~]# yum install nagios nagios-plugins [root@ns ~]# vi /etc/nagios/nagios.cfg # line 52: uncomment cfg_dir=/etc/nagios/servers [root@ns ~]# vi /etc/httpd/conf.d/nagios.conf # line… Read More

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How to Configure OsTicket In Ubuntu

Osticket is Open Source Supporting System. its Free,reliable and easy to setup. in this tutorial we share how to install Osticket Step 1 Need to update and upgrade all package apt–get update apt–get upgrade Step 2 Install LAMP server with PHP extension apt–get –y install apache2 mysql–server mysql–client php5 php5–mysql php5–imap php5–gd php5enmod imap Start Apache and Mysql /etc/init.d/apache2 start /etc/init.d/mysql start Step 3 Configure Mysql Server mysql_secure_installation Need to login Mysql mysql -u root… Read More

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