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Peer-to-Peer file sharing traffic has become a very large problem for many organizations as users engage in illegal (most times) file sharing process…
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It's easy to see why virtual LANs have become extremely popular on networks of all sizes. In practical terms, multiple VLANs are pretty much the same as h…
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In a Windows server environment, it is very important that only authenticated users are allowed to log in for security reasons. To fulfill this requiremen…
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Our previous article explained the purpose of Link State Update (LSU) packets and examined the Link State Advertisement (LSA) information contained within…
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One Appliance – One Image is what Cisco is targeting for its Next Generation Firewalls. With this vision, Cisco has created a unified software image named…
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Errdisable is a feature that automatically disables a port on a Cisco Catalyst switch. When a port is error disabled, it is effectively shut down and…
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This article shows how to perform an ISSU (In-Service Software Upgrade) on a Nexus Data Center switch (7000 and 7700 models) and avoid service and network…
Cisco Router 'User Exec' Mode
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Let's see what it looks like to be in User-Exec mode on a Cisco router. Below, we have telneted into our lab router and are in User Exec Mod…