Dans ce blog, nous discutons vPV et VSS. Introduction Si l’objectif “historique” est le même : s’affranchir de la limitation de STP (blocage de ports pour prévenir les boucles), de l’usage des FHRP (HSRP, VRRP) pour équilibrer les liens, d’augmenter les performances en débit et capacité de calcul, d’éliminer les SPOF liés à l’utilisation d’un…...
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In this blog let’s discover the world of Zabbix… Introduction Zabbix is a free infrastructure monitoring tool that collects and displays measurements about networks, servers, machines, business services, containers, cloud infrastructure, IoT, websites, applications and other services. In this blog, let’s explore in depth the world of Zabbix : what we can do with it?…...
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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…
