Furthermore, with the
advent of cost-effective high-bandwidth technologies, such as DSL, organizations can
use VPNs to reduce their connectivity costs while simultaneously increasing remote
connection bandwidth.
?– Security: VPNs provide the highest level of security by using advanced encryption and
authentication protocols that protect data from unauthorized access.
?– Scalability: VPNs enable corporations to use the Internet infrastructure within ISPs
and devices, which makes it easy to add new users. Therefore, corporations are able to
add large amounts of capacity without adding signi?¬?cant infrastructure.
?– Compatibility with broadband technology: VPNs allow mobile workers,
telecommuters, and people who want to extend their work day to take advantage of
high-speed, broadband connectivity, such as DSL and cable, to gain access to their
corporate networks, providing workers signi?¬?cant ?¬‚exibility and ef?¬?ciency.
Furthermore, high-speed broadband connections provide a cost-effective solution for
connecting remote of?¬?ces.
Types of VPNs
There are two types of VPN networks:
?– Site-to-site
?– Remote-access, which includes these two types of VPN solutions:
??” Cisco Easy VPN
??” Cisco IOS IP Security (IPsec)/Secure Socket Layer (SSL) VPN, also
known as WebVPN
A site-to-site VPN is an extension of a classic WAN network.
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