Access VPNs—An access VPN, as shown in Figure 13-1, provides secure communications
with remote users. Access VPNs are used by users who connect using dialup or
other mobile connections. A user working from home would most likely use an access
VPN to connect to the company network. Access VPNs usually require some type of
client software running on the user’s computer. This type of VPN is commonly called a
remote-access VPN.