In this post, let’s recall what is subnetting for routing and switching purposes and how it is done. Motivation Network subnetting is very important subject that maybe referred to as VLSM for variable length subnetting. The basic idea is about managing a space of IP addresses (IPv4). Historically, a network length or space was fixed…...
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In this blog, let’s check options to enable DNS protection using meraki and integration with cisco secure connect (or Umbrella) First of all… First of all let’s recall how DNS protection works in CsC or Cisco Umbrella. To be protected a DNS request must reach the dns.sse.cisco.com that can resolve to this IP address for…...
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Let’s discuss in this blog, the operation of routing using a simple network example: a home network. Introduction The person in A wants to join its colleagues in location B through the network topology described in the below figure. This person needs to go back home at the evening! Should the one way and return…...
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In this post, we work on our understading of the operation of RIP and how split horizon rule work Lab setup In our setup, R1 and R2 routers are in RIP domain and exchange information about loopback 0 and 1 networks. R1 is participating also to a static routing domain and advertises loopback 88 and…
In this post, we present the work entirely accessible at link: Bézier Curves Based Novel Calibration Technique of Beamformers in IEEE 802.11 WLAN Networks, about a new way of doing beamforming in the wlan unified (WLC-based) network. Let’s recall that beamforming is the mean by which an access point (AP) concentrate the electromagnetic energy toward…
Let’s discover in this blog the recommended study path and experience to fulfill the requirement for a position as a cybersecurity expert of consultant. What is Cybersecurity in general Per Cisco definition, Cybersecurity is “the practice of protecting systems, networks, data and programs from digital attacks”. The scope may include: identification of attacks, protections of…...
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