In this article we will look at how we can use knockd to hide services running on a Linux server. Install Knockd on a Linux Server Knockd is available in most distro’s repositories. On a Debian/Ubuntu/Ubuntu-based server, you can use the apt-get command to install knockd. For Fedora, CentOS, or REHL users, you can use the yum command: Install and Configure Iptables If you don’t have Iptables installed on your server, install it now....

1. Accurate Altimeter (Android) One of the more popular options and also one of the best. Accurate Altimerer lets you measure your altitude on your phone with three different methods – all without an Internet connection. It uses satellite triangulation, ground elevation from a global elevation map, and a pressure sensor (if your device has one). Between those three, the accuracy is pretty solid. It tracks your past walks, presenting you with an elegant graph showing your past altitude movement and uses hiker-friendly maps that show contour lines, the names of relevant peaks and other vital information....

If you belong to this group of people and have finished the development on the localhost, here are the steps to move your WordPress from localhost to a live server. Note: there are plugins that can automate this process. This tutorial will cover the manual steps without requiring the help of a plugin. Create new database on live server If your web host comes with cPanel, log in to the Cpanel, and click on “MySQL databases” in the Databases section....

Fortunately, Google Chrome provides a way for you to mute an entire website in one go so that any media that starts playing does so silently. Here are two methods you can use to perform this function. via Site Tab Go to a website that features auto-playing videos. Go to the top of the browser and to the tab of the window that you have currently opened. Right-click the tab....

Tip: power your browsing experience with Chrome keyboard shortcuts. How to Pin an Extension to the Chrome Toolbar Follow the steps below to pin an extension to the Chrome toolbar. Please make sure you have the latest version of Chrome before you start. Note: the pushpin icon will either be blue or grey. If it’s blue, it means the extension is already pinned to the Chrome toolbar. If it’s white, it means the extension is not pinned....

Due to the legal implications of using such a library, many distributions do not include it in their software repositories by default. However, you can easily install it to get DVD playback functionality on a variety of video players. This tutorial will walk you through how you can play encrypted DVDs with VLC media player. Installation The first step is to install the libdvdcss package through your distribution’s package manager....

Higan is considered the most accurate SNES emulator and will allow you to play the vast majority of titles for Nintendo’s retro console. The tradeoff for its increased accuracy and compatibility is that it’s much more demanding than alternatives, so it can stutter even on five-year-old PCs. If you have a relatively new PC, though, and like the idea of having access to almost all titles ever made for SNES, presented as if they were running on an original console, read on....

In this article we give you pro tips for handling joysticks and coin slots, quitting games gracefully, transferring ROMs, and upgrading when new versions come out without losing all your games. Two notes before we start: this is not information about all the emulators, just the most common ones, and when in doubt use a USB joypad modelled on the original console system. (More about this below.) ROM transfer The first problem you might face is how to get games into Retropie....

What you need to know about Smartphone Specs Just like last time, we’ll start by pulling up the HTC One’s specs. Let’s take a look at the camera first. Camera Much of the information here is more than you need to know. First, the most useful bit of information is what’s left off – megapixels (MP). The HTC One has a 4MP camera. Many of its competitors these days ship with 8 or 13MP....

No matter how well you treat your laptop battery, its capacity will diminish eventually. No matter how top of the line your computer was at the time you purchased it, its built-in power meter can sometimes give you incorrect estimates as to how much battery life you have left. Even if you let your battery discharge a little bit before plugging it back in, it might not always help to extend battery life....

The administrator account provides you the full right to access your computer. Any guest account is a limited account and you could not access administrator right from this account like changing or removing administrator password, registry editing, group policy editing, etc. So it is not possible to retrieve administrator account password from here. That’s why you have to do it from boot option. Remove or Change Administrator Account Password by Windows XP CD: Insert a Windows XP disc into CD/DVD drive and reboot your computer....

A talented Google Intern has created some software for the ChromeOS browser that allows Crouton to be run in a window. It’s a fairly simple process made possible by two great tools – Xiwi and a Crouton Integration extension. Please note: for this to work, you’ll need to already have Crouton installed on your Chromebook. Getting your Chromebook ready Before anything in this guide can happen, your Chromebook must be put into development mode....

Install nmap with Homebrew If you have the Homebrew package manager installed, run to download and install nmap and any necessary dependencies. Scan with nmap nmap is built to scan a provided hostname or network address and return a list of open ports. The name stands for “network mapper,” but it’s more of a port mapper. The simplest way to run nmap is with an IP address or range of IP addresses specified as the target; replace with the appropriate IP address to scan on your local network....

How to Prepare Your Custom Icon While there are custom icon packs such out there that you can install from the Google Play Store, users also have the option to create their own icons using images directly from their galleries or from the Web. First, you’ll need to prepare the custom icon you want to use to replace the app’s default icon. You can use any image you have for that....

Konsole Placement For this little project, you don’t want Konsole appearing at random points of the screen. Instead, it should reappear in the same position, with the same dimensions, whenever it is run. KDE helps in that with its per-application appearance settings. Right-click on Konsole’s title bar and select “More Actions -> Special Application Settings …” Enable the Position and Size and set them to “Remember.” Also, enable “Maximized vertically” and set it to “Apply Initially -> Yes....

The latest Bluetooth 5.3 version is available now. At the moment, there are many more devices than ever attached to your Windows PC simultaneously. We’re here to help you cope with the increasing wireless traffic by showing you how to manage your Bluetooth device collection. The Uses of Bluetooth in Windows You can do a lot of things with Bluetooth in Windows. It helps you connect with Bluetooth-compatible peripherals such as mice, keyboards, headsets, and Xbox accessories....

Start a Family Group First things first: you need to set up a family group. Only one person in the family should be set up as the family organizer, and this can be done via your iOS device (iPhone or iPad) as well as on a Mac. It’s important to note that whomever is setting themselves up as the family organizer does so with a credit card that can be used by everyone....

The beauty of a free website builder like Bellstrike is how easy it is to use. If you can fill out a form and upload a picture, you can build a site. Bellstrike will give you the chance to have a place to send people for donations and information about your event or cause. Here is a run-through on how- to set-up a free donation site for your non-profit fundraiser....

Internet Connection Check the speed of your Internet, and turn off any downloads or video streams that might be eating into your network’s resources. If the images are not being sent at full speed from your computer to the printer, the speed is affected at the beginning of the process. Paper Quality Having high-quality paper can significantly increase the speed of printing. This is because high-quality paper loads smoothly and flows easily through the printheads....

A Decrease in Wi-Fi Speed The most obvious sign that someone outside your trusted circle is using up your Wi-Fi resources is when the speed of the Internet suddenly drops for no apparent reason. Your videos might be taking longer to buffer. Websites might be taking longer to load, and online games might be having difficulty operating. If you feel your net speed has decreased, or your data packet is being used up much more quickly than usual, it might be because someone else has hacked into the network and is using your Internet....