Administration of the Avaya G350 Media Gateway - Avaya Support

Typical installationsTypical installationsThe following sections describe the typical IPSec VPN installations.Simple VPN topology: VPN hub and spokesThe simple VPN topology consists of several VPN spokes (branch offices) connected via theInternet to the VPN hub (Main Office).In this topology:● The Broadband Internet connection uses cable or DSL modem, with a static public IPaddress.●●There is a VPN tunnel from each Spoke to the VPN hub over the Internet.Only VPN traffic is allowed via the internet connection.Figure 18: Simple VPN topology: VPN hub and spokesEthernetBranchOffice 1BranchOffice 2Avaya GWG350Avaya GWG350EthernetDSL orCablemodemDSL orCablemodemInternetAccessRouter +VPNterminationMain OfficeIssue 3 January 2005 221