Improving the registration form on the site
On the Internet, the registration procedure is found to us as often as the form of authorization on sites. You have to register to perform: in all kinds of web…

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Creating an Effective Hero Image Image for a Website
Does the user only need 50 milliseconds to form an opinion on any site? Web developers and designers really have very little time to make a good impression on a…

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The ideal form of authorization - how to do it is not necessary
Recently, we posted a number of useful tips on creating effective registration forms on the site, and today we want to talk about the authorization / login block. Recently, a…

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protocols that use checksum calculation

PPTP VPN

This protocol allows you to implement a secure point-to-point connection by creating a tunnel in an insecure network.

The work of PPTP is to implement PPP frames in IP packets for transferring them to any IP network, including the Internet. In addition, this technology can be used to create a tunnel between local networks.

A TCP connection is used to service the created PPTP tunnel.

Brief specification
The protocol specification was published in 1999 in RFC2637, but the IETF community has not ratified it.
Less secure than IPSec, PPTP establishes a PPP session using the GRE protocol. The 1723 TCP port is used to control and initiate the GRE connection. Redirecting PPTP to the firewall is difficult because the protocol requires two sessions to be established simultaneously. Continue reading

Anonymous proxies
A proxy server is the link between users and the Internet. Proxy server - a server that is constantly on the Web, transmitting all user computer requests to the network,…

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Connect Xbox 360 via VPN server
Regional content protection checks your account for belonging to a specific country, and checks it against the IP address of your console. If your account is American, and the IP…

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VPN Basic Concepts and Classification
The term VPN (Eng. "Virtual Private Network") refers to a group of technologies that provide a network connection, or the so-called logical network, functioning on top of some other network,…

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