Internet Marketing Cost Effectiveness
What are the main steps in the online sale process? Advertising tools attract potential customers to the site. Tools can be different: seo, contextual advertising, display advertising, advertising on social…

Continue reading →

How to make a website footer: design options, why you need it, tips
Home »Web Design» How to make a footer of a site: design options, why it is needed, tips How to make a website footer: design options, why you need it,…

Continue reading →

7 popular typography trends in website design
Typography is the style, layout and appearance of the printed letters / texts on the page. Currently, it has already become an integral element of web design. You will find…

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

Overview of modern antiviruses
Of all the threats to the security of user information, viruses stand apart. These small malicious programs, if not handled carefully, can steal or destroy any data. But it turns…

...

7 applications for creating a logo: an overview of services for "dummies" and novice designers
Usually, when a business idea is formed and a product or service that a company will offer on the market is already known, one thing is missing - good branding.…

...

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…

...

Child Safety Online
Many users, even the most experienced, sometimes do not suspect that having protected themselves, they forget about their own children. They forget, especially when creating different accounts in the OS…

...