Personal Data Security
What is personal information and why does the state develop entire laws designed to protect such data? Imagine that you are making an order online. In the process of forming…

Continue reading →

How to get more search visibility using other people's resources
Whatever niche you work in, there are probably dozens, hundreds, and even thousands of other sites of similar subjects. Some are your direct competitors, with others your interests overlap partially.…

Continue reading →

All the information about you is ... on the Internet
The fact that computers have long and reliably entered the lives of almost every person no longer surprises anyone. This “iron” makes us capable of many things: it allows us…

Continue reading →

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

Landing Myths
Creating a high conversion landing page is a whole deal, right? And to want the landing page to look beautiful and cling to visitors is an understandable desire. But you…

...

Top Web Design Articles, Downloads, and Inspiration
We continue the annual tradition and publish the most interesting notes for the "last season". Earlier in Design Mania, you could already see a similar article for 2017 and a…

...

How to write articles. To help copywriters
Today, more and more people are trying themselves in copywriting. This is both good and bad. Good - because, as they say, the more professional the party, the more interesting…

...

Personal Data Security
What is personal information and why does the state develop entire laws designed to protect such data? Imagine that you are making an order online. In the process of forming…

...