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WAN

[SysAdmin] Create isolated WiFi network on OPNSense with local wireless interface

During the last months I am using OPNSense as my firewall (moving away from PFSense). At the very beginning I was using it on an apu2d board but then I decide to try running it in a kind of NFV way. Now I am indeed running OPNSense as a virtual machine (with KVM as hypervisor […]

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OSPF topology

[Networking Lab] GNS3 Lab to practice with OSPF LSA types and areas (TCP/IP Volume I)

Here we go with another Lab with GNS3 and IOU. This time is to review and practice the OSPF configurations as well as LSA types, Areas, routing table, virtual links and whatever you’d like to study for OSPF. The exercise rebuilds the one reported in TCP/IP Volume I book on Chapter 8. The topology is […]

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[Networking - LAB] Basic MPLS topology

While reviewing MPLS topics you can’t avoid to try how the technology works doing some labs. This is particularly valid if you don’t have the opportunity to “touch” the technology with your daily job. That’s why I decided to rebuild the topology of MPLS cloud used in the INE course for the MPLS exam. As […]

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DMVPN Lab GNS3 topology

[Networking - LAB] DMVPN GNS3 preconfigured lab for Yasser Auda Workbook

As promised in my recent post about DMVPN online and free study resources, I prepared a small topology for a Laboratory that helps you practising with DMVPN. The topology is 100% the same you need to fulfill the Yasser Auda Workbook that I mentioned in my previous post as well. What I did is very […]

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DMVPN topology

[Networking] DMVPN - Online study resources

This is a very quick post to provide some documents to read and study if you are interested in learning DMVPN technology. I added a very short comment for each suggested link/study resource. Quick Guide + link for workbook: https://learningnetwork.cisco.com/docs/DOC-24227 I’ve found that this link i a very good point where to start. It is […]

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Gre+IpSec

[Networking - LAB] Simple GRE Tunnel + IpSEC on Cisco router

Today I was reviewing GRE tunnels and their interaction with IpSEC and I decided to create a very simple and small Lab in GNS3 to have a little bit of practice with it. At the end of the article you will find the Topology file for GNS3 so you can follow the steps showed in […]

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