Chapter 21. Remote Access and VPNs
Discussed in this chapter are remote access options and alternatives, including traditional remote access and virtual private networking (VPN) architectures.
Remote Access
Remote access can be defined as providing access to fixed site resources to those users who are not at a fixed workstation at that location's local-area network (LAN). Remote access connectivity can be provided via the plain old telephone system (POTS), leased lines, T\_carriers, fractional-T1 systems, X.25 (public switched data network, or PSDN system), Integrated Services Digital Network (ISDN), or Frame Relay system. Traditional remote access systems involve users dialing into a dedicated modem pool, maintained either by a corporate IS/IT ...
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