General discussion


what is vpn why vpn need

By mdjameer ·
what is vpn?why need vpn?how to configured vpn?
plse tell me

This conversation is currently closed to new comments.

Thread display: Collapse - | Expand +

All Comments

Collapse -

by Ronypp In reply to what is vpn why vpn need

Virtual private networks are secured private network connections, built on top of publicly-accessible infrastructure, such as the Internet or the public telephone network. VPNs typically employ some combination of encryption, digital certificates, strong user authentication and access control to provide security to the traffic they carry. They usually provide connectivity to many machines behind a gateway or firewall.

Windows NT, 2000 and XP offer native VPN support. VPNs are recommended to secure 802.11b wireless LANs as well.

There are lots of links to learn about VPN. Try:

Collapse -

by dmiles In reply to what is vpn why vpn need

As the popularity of the Internet grew, businesses turned to it as a means of extending their own networks. First came intranets, which are password-protected sites designed for use only by company employees. Now, many companies are creating their own VPN (virtual private network) to accommodate the needs of remote employees and distant offices.

Image courtesy Cisco Systems, Inc.
A typical VPN might have a main LAN at the corporate headquarters of a company, other LANs at remote offices or facilities and individual users connecting from out in the field.

Basically, a VPN is a private network that uses a public network (usually the Internet) to connect remote sites or users together. Instead of using a dedicated, real-world connection such as leased line, a VPN uses "virtual" connections routed through the Internet from the company's private network to the remote site or employee. In this edition of HowStuffWorks, you will gain a fundamental understanding of VPNs, and learn about basic VPN components, technologies, tunneling and security.

What Makes A VPN?
There are two common VPN types:

Remote-access - Also called a virtual private dial-up network (VPDN), this is a user-to-LAN connection used by a company that has employees who need to connect to the private network from various remote locations. Remote-access VPNs permit secure, encrypted connections between a company's private network and remote users through a third-party service provider.

Site-to-site - Through the use of dedicated equipment and large-scale encryption, a company can connect multiple fixed sites over a public network such as the Internet. Site-to-site VPNs can be either:
Intranet-based - If a company has one or more remote locations that they wish to join in a single private network, they can create an intranet VPN to connect LAN to LAN.

Collapse -

by mdjameer In reply to

Poster rated this answer.
thanx plse give me more detail about how to congigured vpn .which os is best for vpn.

Collapse -

by mdjameer In reply to what is vpn why vpn need

This question was closed by the author

Related Discussions

Related Forums