A wide variety of protocols and options exist for remote access including SSH, Telnet, RADIUS, TACACS+, PTPP, L2TP, and others.
Understand the role of security with respect to remote access and the primary methods to support secure remote access.
RADIUS and TACAS+ are both authentication, authorization, and accounting (AAA) protocols used for remote access administration.
Wireless Access
Wireless protocols and the security implications in their use for remote access create a challenge for security.
WEP provides for a specific level of security in order to offer relatively safe remote connections.
Flaws in WEP leave it vulnerable to specific technical attacks.
VPN/IPsec
Virtual private networks (VPN) and Internet Protocol Security (IPSec) offer methods for ensuring confidentiality and integrity during remote connections.
Tunneling is a means of encapsulating packets inside a protocol that is understood only at the entry and exit points of the tunnel to provide a secure network connection across a public section of a TCP/IP network.
PTPP is a tunneling protocol, popular with Microsoft Windows, that implements tunnels in software.
IPSec is the most comprehensive architecture of VPN implementation.
