No, not on you'r home computer. There are exceptions, however. Some of these examples include: Illigal softwares, a high amount of porn, nosy parents and/or siblings, it protects from some viruses, protection from hackers, and etc. I would highly recommend putting one on your work computer so you don't lose valuable data.
encryption only windows with built in encryption software is win 7 ultimate
I want to set up a vpn so I can access my home computer at work
if you want to password protect folders on your computer you can use a password protection software, saying Kakasoft Advanced Folder Encryption(http://www.kakasoft.com/folder-encryption),open it and set password to protect you data easily.
TPM (Trusted Platform Module) chip. The TPM chip holds the BitLocker encryption key (also called the startup key).
Options-Preferences-BitTorrent-Protocol Encryption-Outgoing set to Forced
with a home lamp timer
-Function knob set to F-Cipher switch set to LD
IPsec
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Indeed it does! With appropriate software and set-up, you can access all you home computer pictures, documents and movies, anywhere in the world and at any time.
The original DS and DS lite cannot use WPA encryption. Nintendo did hope to do so, but this encryption mode would require certain components that would have made the console larger and heavier. The only way to get around it, is for your own computer to act as a wireless hotspot, using Nintendo's USB wi-fi adaptor, or similar device. That way your DS connects to your computer rather than directly to the router - all the WPA encryption is handled by your PC itself.
You don't really need to "secure" a folder to send it over the network as the wireless encryption takes care of it for you. You can use a third party folder encryption app or compress the folder and give it a password if you really want to have overkill. If you're just on a Home network, as in using it in your home, then all you need to do is set the wireless encryption to WPA-2 (it's the highest non commercial encryption) and everything you send to the other computers is encrypted. Depending on the uniqueness of the password, (length of password, how many numbers, random letters, uppercase letters, etc.) it could take years to decrypt even with a high end "cracker".