How To Install OPNsense On Virtualbox?

Saifudheen SidheeqNetworkingLeave a Comment

If you think about an open-source firewall the first two names that come to your mind would be Opnsense and PfSense firewalls. I have installed pfSense on my old machine and I am still using it and it works great. When I first heard about the Opnsense firewall I thought let me spin them up in my old machine replacing … Read More

How To Configure OpenVPN On PfSense?

Saifudheen SidheeqNetworking, pfSenseLeave a Comment

PfSense is great for small offices and even for some of the enterprise networks and most importantly it is a piece of budget-friendly network equipment. If you wanted dedicated hardware and support for your business, you have that option too. You could get Netgate hardware and their paid support or You can even go for a free option which is … Read More

How to setup Globalprotect VPN on Paloalto?

Saifudheen SidheeqNetworking, PaloAltoLeave a Comment

In The last few blogs, we have built a small lab using the Paloalto firewall in gns3, connected the firewall to the internet, and allowed the internal users to the internet. In this blog, we are going to set up and configure a Global protect VPN on a Palo alto firewall and allow remote users to access the internal resources … Read More

How To Configure PfSense Port Forwarding?

Saifudheen SidheeqNetworking, pfSenseLeave a Comment

Port forwarding is one of the features that is useful if you wanted to allow the external users to specific ports on the LAN side or inside the network. And many people get confused when it comes to the port forwarding configuration on the firewall. In this blog, we are going to configure the port forwarding feature using the pfSense … Read More

How To Configure Static Route In Windows?

Saifudheen SidheeqNetworkingLeave a Comment

Have you ever connected to a VPN and realize that you cannot access some of the network resources that you have at home? Maybe you are not able to access Printer in your local network, or something else. And other situation is you have a windows machine that is connected to two different networks and you Are not able to … Read More

How To Prioritize Your PC For Wifi On Windows 10?

Saifudheen SidheeqNetworkingLeave a Comment

Most of the home networks nowadays use mainly Wi-Fi, and we rarely get to see the wired connection directly to the machine. By default, when you connect to both the Wi-Fi and the ethernet cable, the windows machine would priorities the ethernet connection over the wifi.If you check the routing table, you should be able to see two default routes, … Read More

How To Install PfSense on VirtualBox?

Saifudheen SidheeqNetworking, pfSense, VirtualizationLeave a Comment

In some of my last blog posts, we covered the installation of pfSense on BareMetal meaning on old physical PC, and different hypervisors such as pfSense on KVM, VMware workstation, and so on. In this blog, we are going to cover how you can install pfSense on a virtual box hypervisor. Since Oracle VirtualBox is free and it supports Windows … Read More

What is SNMP and how it works?

Saifudheen SidheeqNetworkingLeave a Comment

In a big network environment where you have hundreds or even thousands of devices connected, anything can go wrong at any point in time. So as a network or system engineer it’s your responsibility to make sure that all the systems are up and working at all times. In case anything goes wrong you need to find out what is … Read More

How Do I Turn My Old Computer Into A Firewall?

Saifudheen SidheeqNetworking, pfSenseLeave a Comment

The last blog, we have spun up a pfSense firewall in KVM and made to work as a consumer router replacement. Though it worked fine, the performance was not so great. hence, I decided to build an old spare laptop to work as a pfSense firewall. And when you convert your old pc to the PfSense box, how the performance … Read More

How To Install Pfsense On KVM?

Saifudheen SidheeqKVM, Linux, Networking, pfSenseLeave a Comment

The Pfsense firewall is a good alternative for your home network router. It can even replace the high-end commercial routers at the enterprise network as well. Moreover, it is opensource and free too, Unless you are opting for support from netgate. Can I install pfSense on Ubuntu? The Pfsense is an open-source firewall based on FreeBSD operating system, and since … Read More

How to Setup IPsec Tunnel between Paloalto and PFsense?

Saifudheen SidheeqGns3, Networking, PaloAlto, pfSenseLeave a Comment

In a world where everything connected over the internet, it is quite common that we get to see many enterprise users connect the branch offices via the IPsec VPN.  Moreover, the internet connection is getting cheaper and cheaper now as compared to the dedicated links. That is one of the reasons too the SD-WAN is becoming popular as well. Connecting … Read More

How To Configure Netplan Network? – Examples

Saifudheen SidheeqLinux, Networking, Ubuntu2 Comments

ubuntu netplan configuration

Ever since Ubuntu changed it’s network configuration utility to netplan from the traditional configuration, many of them got so upset. Some of them are very annoyed to the point they even entirely removed the netplan and installed ifupdown back into the system. So is Ubuntu Netplan going to stay ?, if yes shouldn’t we learn how to configure them on … Read More

The DHCP DORA Process Explained – With Packet Capture.

Saifudheen SidheeqNetworkingLeave a Comment


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 might already know the configuration of IP address statically on a computer. It requires you to go to the network properties of the network hosts and manually … Read More

How does the Address Resolution Protocol ARP work?

Saifudheen SidheeqNetworkingLeave a Comment

What is Arp protocol

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 ARP works in the real world? Before we talk about how arp works we need to know something called a mac address first. What does … Read More

How To Install Pfsense Firewall On GNS3?

Saifudheen SidheeqGns3, Networking, pfSenseLeave a Comment

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 then we will also see how you can install a Pfsense firewall on GNS3 software and start building a basic LAB. What is a Pfsense firewall? … Read More

How To Set Static IP On Ubuntu? (GUI and CLI)

Saifudheen SidheeqLinux, Networking, UbuntuLeave a Comment

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 using Ubuntu with GUI, it is pretty straightforward, but what if you don’t have GUI and the only option that you have is to configure … Read More

How I have setup my GNS3?| 10 Easy steps.

Saifudheen SidheeqGns3, NetworkingLeave a Comment

step by step install gns3 in windows

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 working! The problem with GNS3 is that after you get everything working and the next day when you come back … Read More

How To Install And Configure SNMP on Ubuntu?

Saifudheen SidheeqLinux, Networking, UbuntuLeave a Comment

If there is no SNMP protocol, monitoring the Network hosts would have been difficult tasks for the admins. SNMP is a protocol that helps you identify the host availability with many parameters such as network health, hardware resources such as CPU utilization, memory storage, etc. In this blog, let’s discuss how to configure SNMP on an Ubuntu server and specific … Read More

How To Install And Configure Palo Alto In GNS3?

Saifudheen SidheeqGns3, Networking, PaloAlto15 Comments

When you wanted to build and practice Paloalto lab, you have got multiple options. You could try physical gears if you can afford one, else virtualize them. Does gns3 support Palo alto? In this blog, we will configure the Paloalto firewall in gns3 with management IP and one public-facing interface connecting to the internet. The Palo alto firewall works perfectly … Read More

How To Install Checkpoint Firewall In Gns3?

Saifudheen SidheeqCheckpoint, Gns3, NetworkingLeave a Comment

You wanted to work with firewall, mainly the checkpoint firewalls, but you don’t know where to begin with and no prior experience with firewalls either, then you are in the right place. Even if you have experience with the firewall but just wanted to spin up the lab in GNS3, that’s fine too. In this blog, I will cover how … Read More