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".
Share Permission
VPN virtual privet network
I connect to my Raspberry Pi from my desktop PC and a laptop via SSH (Secure SHell) over a home network.
A remote terminal is a computer connected to a network, but is not physically in the same building as the rest of the computers on the network. For example, it might be a computer at the home of a business employee, connected over a secure link to their place of work.
SSH stands for Secure Shell. (Often shown as Secure SHell.) It is a secure method for a host computer to connect to a remote computer on the network or over the internet.
Secure electronic transaction is a protocol standard that secures credit card transactions over the internet. This allows people to make credit card payments for items in a secure fashion over an open network.
ssh protocol
The Secure Socket Layer (SSL) is a security protocol deployed on networks. The network can be an internal network or the internet over which two computers are communicating.
It first began as the Home Shopping Club in 1982, and became the Home Shopping Network on July 1, 1985.
Yes, it allows recorded video to be watched over a home network or remotely over the Internet.
It allows you to network your computers on your home network.Example 1:If you have a music folder on one PC you can share this folder and then access it from any computer on your home network.Example 2:If you share a printer you can print over your wireless from any other computer.Checklist for XP home:Change all computers to same workgroup name.Run home network wizard to enable file and printer sharing.Share files/folders which you want available throughtout your network.here's a site for more information:http://www.Microsoft.com/windowsxp/using/networking/setup/default.mspx
WAN potentially, The Internet is a public network and a WAN (Wide Area Network) is usually private, either a leased line or a virtual private network (VPN) over the Internet.