OPNsense is one of the popular open-source firewalls out there. If you want to use them in a small office or at home, it will be the best choice for your network edge, instead of a regular inexpensive wifi router. This firewall is similar to the pfsense but not so popular as the pfsense. Still, …
Gns3
In our last blog post, we covered how you can install a FortiGate firewall in GNS3, and in this blog, we are going to continue from where we left off to build a lab with the FortiGate firewall. Below is the topology that we are going to build. The FortiGate firewall WAN interface is connected …
We have installed multiple firewalls in gns3, and one of the firewalls you will have issues installing in gns3 is the Cisco ASA firewalls. Though there is documentation out there that explains how to install ASA in gns3, the result would be that you will end up with a reboot loop, and things may not …
GNS3 software is great. You can build most of the network labs and POC’s with it. I even build an SD-WAN lab in it. However, the problem is that it is based on opensource software, so you will get some issues here and there when you start to use it. Like any other open-source projects, …
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 …
If you wanted to connect two sites over the internet securely, 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 with IPsec to encrypt the traffic inside the IP. Once the IPsec connection is established …
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. …
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 …
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. In this blog, we will deploy the Paloalto firewall in gns3 with management IP and one public-facing interface connecting to the internet. The Palo alto firewall works perfectly …
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 …
I have covered many blogs on how you can install a network device in gns3. However, sometimes the challenge is to get the gns3 devices to talk to the local network or your host PC. If you get that setup, you can access the network device GUI from your local machine browser or ssh from …
The gns3 has evolved from just a simulator for Cisco IOS to a multivendor environment.You can simulate the physical network virtually in gns3 and it works great! Wouldn’t be cool if we can get the host internet access shared to the gns3 that way the devices in gns3 can access the internet and you can …
I like to work on physical equipment when it comes to networking, but what if I cannot afford to own one, then the only option is to Virtualise them. I have been running a virtualized environment for both my Network POC’s and the Labs for years now using Gns3. Since Gns3 supports a lot of …
The other day I was working on a POC lab where I had to simulate a DNS server, Centos version 7 in this case in GNS3. It was for one of the nuage sdwan gns3 labs I was working on.Took a copy of centos DNS VM from existing KVM host, added into gns3 by going …