DHCP (Dynamic Host Configuration Protocol) is the process by which network devices acquire IP addresses. Your network’s DHCP server is responsible for assigning each new device a unique address. Addresses can be static or dynamic, the latter meaning they’re issued on a short lease basis so each device’s IP may change over time. The router acts as the DHCP server in most small networks. Setting up Dnsmasq on a Linux box gives you control over the process, as well as improved visibility into any errors that occur....

Here’s something slightly worrisome you may not know: all Android (and iPhone) apps can read your clipboard. That’s bad enough, but how can you know when it’s happening? Thankfully, we can keep an eye on any shady apps. That’s the worst thing about apps having access to your clipboard—it’s pretty much impossible to know if it’s being abused in the background. That’s why Android 12 introduced a feature called “Show Clipboard Access....

Kodi can make your massive media collection easy to browse and play, but adding new media is a bit of a chore. By default, you need to manually tell the program to re-scan your folders every time you add something, which is annoying if you add new media regularly. Isn’t there a way to automate this? Yes: there are three options. Here they are, listed in terms of how easy they are to set up:...

You may want to use this feature to view the information in one app and enter it in another, compare two images, and perform other related tasks. Note that the steps in this guide will slightly vary for you, depending on your phone model. RELATED: How (and Why) to Clone Apps on Android Use Two Apps Simultaneously by Splitting the Android Screen To start splitting the screen, launch both the apps you want to use in this mode on your Android phone....

You fire up Skype and suddenly everything on your computer is radically quieter. While that’s great for ensuring you don’t blast your video conference partners with music it can also be a detriment when it mutes sounds you need to hear. Read on as we fix the Skype silencing issue. The reason you can’t find any setting in Skype to control the sweeping volume adjustments that occur when you run Skype concurrently with other sound-producing apps (like your video game) is because it isn’t actually Skype that’s performing the adjust....

Stop WhatsApp from Auto-Saving Images on the iPhone By default, all photos and videos you receive are saved directly to the Camera Roll in the Photos app on your iPhone. To disable the feature, open the WhatsApp app and go to the “Settings” tab. Here, select the “Chats” option. From this screen, tap on the toggle next to “Save to Camera Roll” to turn off the auto-saving feature. Photos and videos will still be downloaded automatically on your iPhone, but they’ll stay in the WhatsApp memory....

Yahoo Mail comes in two versions: full featured and basic. The full featured version is newer version and is, of course, recommended by Yahoo. However, if you prefer a more streamlined, simple version of mail, you can use Yahoo’s Basic Mail. The full featured version of Yahoo Mail (pictured below) includes personalized themes, stationery, organization of messages by conversation, inline image attachments, filters, Yahoo Messenger, and even the ability to view attached images as a slide show....

Most Browsers Already Include DuckDuckGo as a Search Option DuckDuckGo has been gaining ground for over a decade, finally breaking through to the “mainstream” in September of 2014 when Apple offered it as a default search engine option in Safari for iOS 8 and OS X Yosemite. Later, in November of the same year, Mozilla added it to Firefox 33.1. RELATED: What Is DuckDuckGo? Meet the Google Alternative for Privacy...

Pick a Monitor First, you have to pick the right monitor for the job. Your budget will play a large role here, so first, decide what you want to spend, and which features are most important to you. Here are some things to consider before you choose a monitor: Resolution: This is the number of pixels displayed onscreen at once, measured on two axes (e. g. , 1920 x 1080). Generally, the higher the resolution, the better the image quality....

There are two options to choose from when you download WinPatrol as with most programs online, the free, and the paid version. For the purposes of this article, we will focus on using the free version to monitor changes on your computer. To begin, you will need to navigate to WinPatrol’s download page to download the installation file. This file will be used to install both the free and paid versions of WinPatrol....

Five hundred hours of video are uploaded to YouTube every minute, so you’ll literally never be able to watch everything. The real challenge is sorting through everything that you could be watching and deciding what sounds good—like you could in the old days of TV. Why can’t you channel surf the web, the way you used to surf cable channels? That is the question PlutoTV tries to answer, and it does a pretty good job....

Most people don’t replace their routers that often, and there are so many important settings, it’s easy to overlook a few and forget how your old one was set up. Here are the first five things you need to do right after powering up your new router. RELATED: Clone Your Current Router for a Headache-Free Router Upgrade A few minutes of tweaking and configuration right after unboxing your new router can save you headaches down the road....

USB Type-C brings a new universal connector to laptops and smartphones, and many devices are already starting to use it. But beware: many USB-C cables aren’t designed properly and could potentially damage your hardware. Before buying any USB Type-C cables for your new devices, you should look up whether the cable is actually compliant with the USB-C specification. More people are sure to run into this problem as more USB Type-C-enabled devices are released....

The PlayStation 4 Pro has a lot of benefits over its predecessor, like a significantly faster GPU—an update that was basically required in order for the console to push 4K content. But what about older games—shouldn’t they be able to take advantage of this increased performance, too? RELATED: What’s the Difference Between the PlayStation 4, PlayStation 4 Slim, and PlayStation 4 Pro? In a nutshell, that’s exactly what Boost Mode does: it allows older titles—ones that haven’t yet been updated specifically for the PS4 Pro—to take advantage of the system’s increased power to run faster and smoother....

Your smartphone needs a recharge yet again and you’re miles from the charger at home; that public charging kiosk is looking pretty promising–just plug your phone in and get the sweet, sweet, energy you crave. What could possible go wrong, right? Thanks to common traits in cellphone hardware and software design, quite a few things–read on to learn more about juice jacking and how to avoid it. What Exactly Is Juice Jacking?...

DNS cache poisoning, also known as DNS spoofing, is a type of attack that exploits vulnerabilities in the domain name system (DNS) to divert Internet traffic away from legitimate servers and towards fake ones. One of the reasons DNS poisoning is so dangerous is because it can spread from DNS server to DNS server. In 2010, a DNS poisoning event resulted in the Great Firewall of China temporarily escaping China’s national borders, censoring the Internet in the USA until the problem was fixed....

If you’re trying to figure out what’s taking up space on your Mac, you might stumble upon some large files inside a folder called lost+found—particularly, a large one with “iNode” in the name. Is there any way to find out what those files are, and whether they’re safe to delete? RELATED: What Is the lost+found Folder on Linux and macOS? We’ve already explained what the lost+found folder in macOS and Linux is, but there are a few specific things you might want to look out for if you’re on a Mac....

For the most part, it is no mystery what the various openings on the outside of our computer hardware are for—most are ports. But what about that oval port that doesn’t match your usual cables? Sometimes it has a “lock” symbol next to it; other times it doesn’t. Today’s SuperUser Q&A post has the answer to a curious reader’s question. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites....

If you are just starting to learn how multi-core CPUs, caching, cache coherency, and memory works, it may seem a little bit confusing at first. With that in mind, today’s SuperUser Q&A post has answers to a curious reader’s question. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites. The Question SuperUser reader CarmeloS wants to know when a CPU’s cache is flushed back to main memory:...

Chrome often warns you “This type of file can harm your computer” when you try to download something, even if it’s a PDF file. But how can a PDF file be so dangerous — isn’t a PDF just a document with text and images? PDF readers like Adobe Reader have been a source of many security vulnerabilities over the years. This is because a PDF file isn’t just a document — it can contain scripts, embedded media, and other questionable things....