New & Notable


Cloud offers flexibility, but beware of security issues

Deploying a cloud service means it's time to craft new policies that govern security procedures.


HP modular switch readied for blazing 802.11ac Wi-Fi

HP's latest module for the HP 5400R z12 ensures the hardware can handle the throughput from 802.11ac access points. The HP modular switch competes with the Cisco Catalyst.


How do you protect your VPN tunnel from split tunneling?

Expert Julian Weinberger says that locking your VPN parameters can help secure your VPN tunnel by blocking users from changing configurations.


SN blogs: Network performance problems envelop cloud

Diagnosing application performance problems remains the responsibility of the network manager, regardless of where those apps live.

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Networking Basics

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    local area network (LAN)

    A local area network (LAN) is a group of computers and associated devices connected to a server using a shared common communications line or wireless link.

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    ICMP (Internet Control Message Protocol)

    ICMP (Internet Control Message Protocol) is an error-reporting and message-control protocol that network devices use to report problems in IP packet delivery.

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    optoisolator (optical coupler or optocoupler)

    An optoisolator (also optical coupler or optocoupler) is a component that uses light to transfer electrical signals between circuits to keep them electrically isolated from each other, preventing surges.

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