Your IP address is the numerical address that servers use to send information when you request it. You can think of it like the return address on a postal letter. If you didn't have this address on the letters that you sent, you wouldn't be able to get information sent back to you if you requested it. A VPN service allows you to use an IP address that keeps you anonymous. The reason that "anonymous" is used to describe what a VPN service does is because your IP address can reveal quite a bit of information about you, much of which you probably do not want revealed at all.
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Recognize that most service providers use it as a solution to a problem or concern vs. suggesting it right off the bat. It is worth looking into your options and talking with service providers to see what your options are.
Your Internet traffic will be obscured from anyone "listening" on the line. Even your ISP or company will have no idea as to what your actual Internet traffic really is.
Cyber predators are capitalizing on the fact that just about anyone can get their hands on easy to use software which can pinpoint the exact location of where your pictures were taken. They are simply downloading free browser plug-ins like Exif viewer for Firefox or Opanda IExif for Internet Explorer. These programs help them identify of where the photo was taken, and helps them create a Google map with directions to your home.
So even if you are in Wireless HotSpots, places that hackers often scout to find new victims, you will be protected when using the vpn. Firesheep, the Firefox plugin is a preferred tool of the trade and is extremely easy to use, even by amateur hackers, or "script-kiddies" as they are called in the underground community. The VPN encryption will also keep you safe from the Firesheep attacks.
Designed correctly, Ethernet models work well, but poorly implemented ones often have challenges. Its important for you to understand that Ethernet based WAN is not simply "plug-n-play". It requires additional planning and setup.
Caching Server supports iOS7. This results in faster download speeds. Updates and purchased content will be cached on a local Mac server. This will increase download speeds but double the amount.
After you have this data put together, you'll need to answer the initial question: "How do I create a VPN?" The most important thing to remember here is that you want to strike a balance between functionality and ease-of-use for both yourself and other people who will be accessing the network.