Scenarios

The scenarios in this topic help you understand how PPP works, and how you can implement a PPP environment in your network. These scenarios introduce fundamental PPP concepts from which beginners and experienced users can benefit before they proceed to the planning and configuration tasks.

• Example: PPP and DHCP on a single iSeries server
  You can learn how to set up the iSeries™ server as a DHCP server for a LAN and a remote dial-in client.
• Example: DHCP and PPP profile on different iSeries servers
  You can learn how to set up two iSeries™ servers as the network DHCP server and a DHCP/BOOTP relay agent for two LANs and remote dial-in clients.
• Scenario: Protect an L2TP voluntary tunnel with IPSec
  In this scenario, you learn how to setup a connection between a branch office host and a corporate office that uses L2TP protected by IPSec. The branch office has a dynamically assigned IP address, while the corporate office has a static, globally routable IP address.
• Scenario: Connect your iSeries server to a PPPoE access concentrator
  Many ISPs offer high-speed Internet access over DSL using Point-to-Point Protocol over Ethernet (PPPoE). The iSeries™ server can connect to these service providers to offer high bandwidth connections that preserve the benefits of PPP.
• Scenario: Connect remote dial-in clients to your iSeries server
  Remote users, such as telecommuters or mobile clients, often require access to a company's network. These dial-in clients can gain access to an iSeries™ server with PPP.
• Scenario: Connect your office LAN to the Internet with a modem
  Administrators typically set up office networks that allow employees access to the Internet. They can use a modem to connect the iSeries™ server to an ISP. LAN-attached PC clients can communicate with the Internet using the iSeries™ server as a gateway.
• Scenario: Connect your corporate and remote networks with a modem
  A modem enables two remote locations (such as a central office and a branch office) to exchange data between them. PPP can connect the two LANs together by establishing a connection between an iSeries™ server in the central office and another iSeries™ server in the branch office.
• Scenario: Authenticate dial-up connections with RADIUS NAS
  A Network Access Server (NAS) running on the iSeries™ server can route authentication requests from dial-in clients to a separate RADIUS server. If authenticated, RADIUS can also control the IP addresses to the user.
• Scenario: Manage remote user access to resources using Group Policies and IP filtering
  Group access policies identify distinct user groups for a connection, and allow you to apply common connection attributes and security settings to the entire group. In combination with IP filtering, this allows you to permit and restrict access to specific IP addresses on your network.
• Scenario: Share a modem between logical partitions using L2TP
  You have virtual Ethernet set up across four logical partitions. Use this scenario to enable selected logical partitions to share a modem. These logical partitions will use the shared modem to access an external LAN.