Networking

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Banana Backups

In the September 2016 issue, I wrote an article called "Papa's Got a Brand New NAS" where I described how I replaced my rackmounted gear with a small, low-powered ARM device—the Odroid XU4. more>>

pfSense: Not Linux, Not Bad

Through the years, I've used all sorts of router and firewall solutions at home and at work. For home networks, I usually recommend something like DD-WRT, OpenWRT or Tomato on an off-the-shelf router. For business, my recommendations typically are something like a Ubiquiti router or a router/firewall solution like Untangled or ClearOS. more>>

NETGEAR 48-Port Gigabit Smart Managed Plus Switch (GS750E)

More than ever, small to mid-sized businesses demand and rely on their networks to carry out mission-critical business activities. As always, however, budgets and expertise constrain these companies from using complex managed switches to run their networks. more>>

PoE, PoE+ and Passive POE

I've been installing a lot of POE devices recently, and the different methods for providing power over Ethernet cables can be very confusing. There are a few standards in place, and then there's a method that isn't a standard, but is widely used.

802.3af or Active PoE: more>>

Tracking Down Blips

In a previous article, I explained the process for setting up Cacti, which is a great program for graphing just about anything. One of the main things I graph is my internet usage. And, it's great information to have, until there is internet activity you can't explain. more>>

Ocado Technology's Kubermesh

Instead of relying on servers concentrated in one large data center, the new Kubermesh is designed to simplify data-center architectures for smart factories by elegantly and cost effectively leveraging a distributed network of computing nodes spread across the enterprise. more>>

My Love Affair with Synology

In my "Hodge Podge" article in the October 2016 issue, I mentioned how much I love the Synology NAS I have in my server closet (Figure 1). more>>

ONF/ON.Lab's ONOS Project

Networks have become indispensable infrastructure in modern society. The danger is that these networks tend to be closed, proprietary, complex, operationally expensive and inflexible, all of which impede innovation and progress rather than enable them. more>>

Never Trust Yellow Fruit

You've probably heard about the WiFi Pineapple from Hak5. It's a fascinating device that allows you to do some creepy pen testing. It's the sort of tool that could be used for evil, but it's also incredibly useful for securing networks. more>>

BlueCat DNS Edge

Migration to the cloud, the flexibility of network virtualization and the promise of IoT involve IT transformations that have placed incredible strain on enterprise security. more>>

Mastering ATA over Ethernet

At one point in time, when you wanted to attach an external block storage device to a server, you mapped it as a Logical Unit (LU) across a Storage Area Network (SAN). In the early days, you would do this over the Fibre Channel (FC) protocol. More recently, iSCSI (SCSI over IP) has usurped FC in most data centers. more>>

Low Power Wireless: 6LoWPAN, IEEE802.15.4 and the Raspberry Pi

The Internet of Things (IoT) is one of the new kids on the block. It promises connection of sensors and actuators to the internet, for data to flow both ways, and once on the internet, to become part of new and exciting business systems, reaching up into the realms of big data and artificial intelligence. more>>

VMKings' VPS Hosting Solution

The management team of cloud provider VMKing, as developers themselves, found standard virtual servers not to be well tailored to the developer community—too much or too little space, insufficient security and no support for their preferred Linux OS(!). more>>

NTPsec: a Secure, Hardened NTP Implementation

Note: This article was first published in the October 2016 issue of Linux Journal. more>>

smbclient Security for Windows Printing and File Transfer

Microsoft Windows is usually a presence in most computing environments, and UNIX administrators likely will be forced to use resources in Windows networks from time to time. Although many are familiar with the Samba server software, the matching smbclient utility often escapes notice. more>>

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