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It strikes me that not many organizations enable Dynamic Arp inspection or DAI for short, on their switches users connect to. Why bother wit...

Now we will look at a larger topology with multiple switches, routers, portchannel and SVI interfaces to see how DHCP work. Clients are conn...

You would think DHCP is easy, well it can be but it also can be quite tricky and sometimes it's a security risk you as the network admin...

It has been long time since I wrote anything on this blog. Short reason is that I have not had time (or taken the time) to do so. For the pe...

Every since Exchange 5.0 introduced access to mailboxes via a webgui, its name has changed several times. Latest namechange is from Outloo...