How does DHCP work in the network? Before we answer that question, we need to understand the different ways of configuring the IP addresses.You could use either DHCP or static IP configuration.You...

If you wanted to connect two sites over the internet, the very popular method is to use the IPsec site to site VPN. By default, the IP alone doesn't provide security, so we need to wrap the IP packet...

If you are new to networking you must have heard the term called ARP protocol - address resolution protocol many times.You may be wondering or even confused. Well, what is the ARP protocol and how...

I have worked on multiple firewalls; however, the one firewall that stands out from the crowd is the Pfsense firewall. Let's take a look at what makes the Pfsense different from other firewalls, and...

If you're using Ubuntu Dekstop or server, and one day you decided to change the IP address of your ubuntu machine from automatic (DHCP) to static configuration. how do you achieve that? If you are...

I have seen some of my friends and colleagues who are struggling to get their GNS3 up and running with no issues at all. Sometime they call me and say, Saif can you please take a look, it is not...