PfSense Dual WAN Failover and Load Balancing | How to Set It Up?

Saifudheen Sidheeq Networking, pfSense

You have been running pfSense on your network. Since there is no high availability on your WAN side, you now have decided to add another ISP for redundancy. When the primary goes down, the secondary ISP should take over or use both the primary and secondary link simultaneously like a load balancing method. Is it possible in pfSense? The multi …

How to use OpenVPN on iPad?

Saifudheen Sidheeq Networking

We configured the OpenVPN with pfSense in our last blog post, and I also showed you how you could connect your Windows 10 machine to the pfSense OpenVPN network. Everything worked fine, and now, we will access the OpenVPN via the internet on an IOS device. I am using an iPad for this testing, and the steps mentioned here are …

How to Install OPNsense on VMware Workstation?

Saifudheen Sidheeq Networking, VMware

The Opnsense is a free, open-source firewall that you could use on your home or small enterprise networks. It does the job really well; unlike pfSense, Opnsense is entirely open-source. When you want to test this opnsense firewall, the best option is to build a lab with it or replace it with your home router. In the last article, we …

How to Configure PfSense Load Balancer Using HAProxy?

Saifudheen Sidheeq Networking, pfSense

The pfSense is an open-source and free firewall that you can spin up on your home network. I have been using it for a while, and it works great. Also, it is a very stable firewall that you could use. Some enterprise users use pfSense as their primary firewall. However, for enterprise networks, it is better to use official pfSense …

How To Connect Your VM To The VPN?

Saifudheen Sidheeq Networking

In some of my last blogs, I wrote about installing virtual machines on different hypervisors such as KVM, VMware, VirtualBox, etc. I use the windows machine as a daily driver Virtual Machine on my Ubuntu host; having the choice of both operating systems at a time is excellent. And I can switch between them any time I want. Can you …

How to Use iPerf Tool? – on Windows and Linux

Saifudheen Sidheeq Networking

As a network engineer, most of the issues you may have to deal with are related to the performance of a network. There are multiple tools that we can use to troubleshoot performance issues. One among them is the iPerf, which can help you identify a given link bandwidth capacity. You can have a server sitting on a remote location, …

ubuntu netplan configuration

How To Configure Netplan Network? – LAB Examples

Saifudheen Sidheeq Linux, Networking, Ubuntu

Ever since Ubuntu changed its network configuration utility to netplan from the traditional configuration, many of them got so upset. Some of them are very annoyed that 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 our Ubuntu …

How To Install PfSense on VirtualBox?

Saifudheen Sidheeq Networking, pfSense, Virtualbox, Virtualization

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 will cover how you can install pfSense on a virtual box hypervisor. Since Oracle VirtualBox is free and supports Windows, MAC, and Linux …

What is my public IP address?

Saifudheen Sidheeq Networking

Your public IP address is: What is this public IP? Public or external IP addresses are those addresses that are routed on the internet. It can be IPv4 or IPv6. And it is a unique address assigned by the internet service providers. And most internet users are connected behind a single public IP address except for some enterprise users who …

How To Install OPNsense On Virtualbox?

Saifudheen Sidheeq Networking, Virtualbox

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. It works great. When I first heard about the Opnsense firewall, I thought, let me spin them up in my old machine, replacing the …

PfSense OpenVPN – How to Set it Up?

Saifudheen Sidheeq Networking, pfSense

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 …

How to setup Globalprotect VPN on Paloalto?

Saifudheen Sidheeq Networking, PaloAlto

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 …

How To Configure PfSense Port Forwarding?

Saifudheen Sidheeq Networking, pfSense

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 …

How To Configure IPsec Site-to-Site VPN On Cisco Router?

Saifudheen Sidheeq Cisco, Networking

In some of the last blog I have covered how to create IPsec tunnels between different firewalls, however, those who want to learn more about the IPsec VPN should practice them on a Cisco router. In my opinion, if you can set up an IPsec tunnel on a Cisco router it would be a very easy task for other vendors. …

How To Configure Static Route In Windows?

Saifudheen Sidheeq Networking

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 …

How To Prioritize Wifi On Windows 10?

Saifudheen Sidheeq Networking

Most of the home networks nowadays use 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.However, if you check the routing table, you should see two default routes, one with a …

ntp configuration on Centos, Redhat and Ubuntu

How To Setup NTP Server In Linux? (Centos, Rhel, Ubuntu)

Saifudheen Sidheeq Linux, Networking, Ubuntu

If you have a Linux machine (Ubuntu, Centos, Redhat) running in your environment and you would want to configure them as an NTP server it is pretty easy. In our last blog, we took a look at what is NTP and how to configure the public and private NTP servers using network routers. In this blog, we are going to …

How To Install Palo alto In VMware Workstation?

Saifudheen Sidheeq Networking, PaloAlto

As you know if you wanted to get hands-on and practice the Palo alto firewalls, the best place is to virtualize them. As many of you out there may not have the options to set up a physical lab. However, there are alternate ways to spin up the Palo alto lab in the cloud using AWS, but that again will …

What is SNMP and how it works?

Saifudheen Sidheeq Networking

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 …

How To Fix USB Ethernet Not Recognized By pfSense?

Saifudheen Sidheeq Networking, pfSense

In our last blog, we took a look at how you can set up a pfSense firewall on an old computer. The problem with that setup is, it had only a single 100Mb NIC which means I had to split the interface into the VLANs. So I can have the WAN and LAN separately. It should work great if you …

How to Build a Firewall ? – Pfsense DYI.

Saifudheen Sidheeq Networking, pfSense

In the last blog, we have spun up a pfSense firewall in KVM and made it 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 for the pfsense build, you …

How To Install Pfsense On KVM?

Saifudheen Sidheeq KVM, Linux, Networking, pfSense

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 open source and free too. Unless you are opting for support from netgate. Can I install pfSense on Ubuntu? Pfsense is an open-source firewall based on FreeBSD operating system, and since …

How to Setup IPsec Tunnel between Paloalto and PFsense?

Saifudheen Sidheeq Gns3, Networking, PaloAlto, pfSense

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 …

How To Configure Palo Alto Site To Site VPN Using IPsec?

Saifudheen Sidheeq Networking, PaloAlto

You have got the brand new Paloalto firewall installed, and you wanted to know how you can set up an IPsec tunnel between branches using Paloalto firewall. If I were to configure an IPSec tunnel for the first time, I would configure them on my lab before I configure it in the production. That way, I would be well prepared …

DHCPACK

How DHCP Works ?- DHCP DORA Process With Packet Capture.

Saifudheen Sidheeq Networking

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 …

How To Configure IPsec Site To Site Tunnel In PfSense?

Saifudheen Sidheeq Gns3, Networking, pfSense

If you wanted to connect two sites over the internet, the very popular method is to use the IPsec. By default, the IP alone doesn’t provide security, so we need to wrap the IP packet with IPsec to encrypt the traffic inside the IP. Once the IPsec connection is established between two sites, no one on the internet can decrypt …