Trending Definitions
Generic Routing Encapsulation (GRE)
Do you know how they say, "GREAT minds think alike"? Well, it's true. We do think alike. You see, we were thinking about creating a virtual private network (VPN) between two locations that couldn't otherwise communicate with each other because of firewalls, and you were thinking about how to encapsulate Layer 3 protocols over an Internet Protocol network. Then it hit me. Generic Routing Encapsulation (GRE) is a tunneling concord that makes it encapsulates Layer 3 protocols over an IP network. It's defined by RFC 2784 as a tunneling protocol that carries OSI layer three protocols in the network. GRE creates a private point-to-point connection, like a VPN. Unlike IP-to-IP tunneling, GRE can send IPv6 and multicast traffic between networks. If you're using GRE to get your data online, it's not just simply putting on your favorite stretchy pants and walking out the front door. No, this is about tunneling your way through an entire network of routers without knowing what's inside those packets. Each router only looks at the outer IP packet before forwarding it along. That means that if there's a problem with any part of the payload itself—say it has too many bytes or is corrupted somehow—it doesn't matter: the router will still forward the packet (and probably get mad at its friend for sending him insufficient data). Once that payload reaches its destination? Then all bets are off! The outer IP packet will be stripped away, and its contents will be revealed in full glory. It will be as if nothing ever happened! GRE is a protocol that allows for stateless and private connections. However, it is not considered secure because it needs encryption. An alternative to GRE in this regard would be IPsec Encapsulation Security Payload, which offers both a secure connection and the ability to maintain statelessness.
...See MoreVertical Metal Oxide Semiconductor (VMOS)
If a transistor is a gate into the digital world, then a vertical metal oxide semiconductor (VMOS) is a gate on steroids. It's like your buddy who had all the right moves in high school, but now he's got a little more swagger, and he's not afraid to use it. He'll still be there for you if you need him, but he's also happy just hanging out with his friends at the bar and showing off his moves with that new girl who seems to be giving him some attention. A VMOS, or vertical metal oxide semiconductor, is a type of MOS transistor. It's called a VMOS because it has a V-shaped groove cut into its substrate. A vertical metal oxide semiconductor (V-MOX) is like a sandwich with four layers of bread and filling. It has a base layer of silicon, which is the top and bottom slices of the sandwich. Then comes an insulating layer, which forms the middle portion. Next comes an oxidation layer, including the meat between those two slices. Finally, there's a nitride layer on top of the cheese on your sandwich, if you will. Imagine that you've got a V-shaped groove carved out of this whole assembly, a channel running from one side to the other but tapering off at both ends. That's your V-MOX! And it's etched at precisely controlled depths through all four layers so that when you put an electrode down in there. It touches only one of those layers: either the gate electrode or one side of the capacitor formed by oxidized silicon dioxide. VMOS is the original MOSFET. It was the first transistor to be used in switching applications and has been around since the late 1960s.It's a stop-gap power device. It's not as good as UMOS or trench-gate MOS, but it gets done until those better geometries are introduced.
...See MoreZero Day Virus
You know when you're just so happy with your life, and suddenly, your phone starts buzzing with notifications about a zero-day malware attack? Well, that's like being really happy and then getting hit by a truck. You don't know what is happening, and you do start panicking to understand what just quite happened there—except instead of ending up in the hospital, your phone buzzes and wakes you up from this nightmare of a thought. You try to get back your senses. That's because zero-day malware is a specific kind of malware or malicious software that has only recently been discovered. In general, a zero-day phenomenon is not previously known or anticipated. Security teams respond to zero-day malware and other zero-day events, tracking their ability to resolve them in real-time. There's much malware out there. It's always been a problem, but it seems like it's getting worse. That's not surprising. Technology is advancing faster than ever before, and hackers are using the new ways we connect to find new ways to break into our systems. So what does "Zero Day Virus" mean? It means the malware is brand new—it hasn't been seen before. As it's so unique, hackers haven't had time to develop ways of fighting it yet! It's like when you get a new attack dog: You don't know what its favorite treat is or how much water it likes to drink, or whether it'll grow up to be big enough to scare off burglars on its own yet—but you know that someday those things will come up, so you teach your dog how to do them right now. Zero-day malware is a helpful marker showing a new threat and needs to be documented and resolved as quickly as possible.
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