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Understanding and Implementing DialVirtual Private Networking (VPN) ServicesWh i te Pa pe r Rem o te Acce s s

What to Look for in a Dial VPN SolutionPerformance ConsiderationsNetwork ResiliencyIn today’s competitive market,one of thechallenges service provider

Value-Added Management Applications Most vendors provide value-added appli-cations for managing their own networks and network components.Very few ven

BayStream Dial VPN ServicesFor service providers who want to provideDial VPN access,BayNetworks offersBayStream™Dial VPN Services,a completesoftware s

SecurityThe RAS typically provides access controlwhile subscriber authentication is providedby the Bay Networks TMS.When a user logsinto the RAS,the l

Service ProvisioningBayStream Dial VPN Services is somewhatunique in terms of provisioning,since thes e rv i ce is provisioned mainly by co n f i g u

access including cable modems and xDSL(Digital Subscriber Line) present intriguingpossibilities and new challenges for serviceproviders.New ProtocolsT

A variety of VPN-related articles have beenwritten in some of the more popular networking industry trade publications.These articles are all available

16 White Paper Understanding and Implementing Dial VPN ServicesAppendix A — A Dial VPN Checklist• Supports both Layer 2 and Layer 3 tunneling,or inten

3DES Triple Data Encryption StandardAAA Authentication, Authorization,and AccountingACP Access Control ProtocolARA AppleTalk Remote AccessARAP AppleTa

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2 Executive Summary3 Introduction4 The Need For Dial VPNs6 Dial VPNs6 Tunneling8 Security8 Network Management and Administration9 What to Look for in

Corporate interest in outsourcing remoteaccess is increasing as some companiesfocus more strongly on their core businessesby off-loading support and p

One of the fastest growing areas of the networking industry is remote access tovirtual private networks (VPNs).Driven bythe boom in inexpensive Intern

The tremendous growth in demand for service provider-based,dial access to VPNsis being driven by the many factorsdescribed below.The Internet as a Via

Service providers offer VPN or intranet services for companies choosing to out-source remote access service.An intranetuses Web-based technology to co

Much of the public discussion surroundingV P Ns thus far has ce nte red around tunneling.Tunneling,however is merely one compo-nent of a complete and

Layer 3 Tunneling and Layer 2 TunnelingIETF proposals for tunneling traffic over Dial VPNs can be sorted into two groups:Layer 3 tunneling (like IPSEC

SecurityThe second key issue in deploying or imple-menting Dial VPN access is network security,i.e.,allowing remote dial-up connectivitywhile protecti