In this post, we present an example of an IPv6 network operation, based on a home network setup that is a PC (Windows) and a box (an internet box provided by an ISP that supports IPv6). Introduction In the first paragraphs, we talk about some general motivations to use IPv6 instead of IPv4. Then, we…
In this blog, we talk about the general idea about using and IDS or IPS. let’s recall that IDS/IPS stands for intrusion detection and prevention systems. We give examples of implementations of vendors and leaders of the market. Scope of an IDS/IPS Let’s start from a basic setup: clients that try to access ressources on…
Introduction Dans cet article nous discutons de la fonction de base d’un WAF ou pare-feu d’applications web. Comme son nom l’indique il s’agit de sécuriser l’application, plus précisemment l’accès à cette application, et ne se préoccupe pas nécessairement d’autres aspects sécuritaires : réseau, d’autres applicatifs (niveau 7 OSI) ou de transport (niveau 4 et 5…
In this blog, we introduce SSM way of multicasting. Introduction and definitions This post is a part of a serie of post about Multicast operation from the most basic setup to a much complicated one (scenario that include more routing and receiving options, etc.). We will explore the operation of SSM (Source Specific Multicast) in…...
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Introduction Dynamic routing protocols exchange routing information before populating routing tables and forwarding packets. For this task, RIP (routing information protocol) put into play many machanisms and rules to guarantee that this routing information exchange is consistent: not contradictory among routers. An example of such inconsistency is to receive the same routing information on two…
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…
