Scenarios: Remote access using PPP connections

These scenarios describe how Point-to-Point Protocol (PPP) works and how to implement a PPP environment in a network. The scenarios also 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 System i
  This example explains how to set up a System i™ model as a Dynamic Host Configuration Protocol (DHCP) server for a LAN and a remote dial-in client.

• Example: DHCP and PPP profile on different System i models
  This example explains how to set up two System i models as the network Dynamic Host Configuration Protocol (DHCP) server and a BOOTP/DHCP relay agent for two LANs and remote dial-in clients.

• Scenario: Protecting 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: Connecting your system to a PPPoE access concentrator
  Many Internet service providers (ISPs) provide high-speed Internet access over a Digital Subscriber Line (DSL) using Point-to-Point Protocol over Ethernet (PPPoE). You can connect your system to these ISPs to provide high-bandwidth connections that preserve the benefits of Point-to-Point Protocol (PPP).

• Scenario: Connecting remote dial-in clients to your system
  Remote users, such as telecommuters or mobile clients, often require access to a company's network. These dial-in clients can gain access to a system with Point-to-Point Protocol (PPP).

• Scenario: Connecting your office LAN to the Internet with a modem
  Administrators typically set up office networks for employees to access the Internet. Administrators can use a modem to connect the system to an Internet service provider (ISP). LAN-attached PC clients can communicate with the Internet using the i5/OS^® operating system as a gateway.

• Scenario: Connecting 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. Point-to-Point Protocol (PPP) can connect two LANs together by establishing a connection between a system in the central office and another one in the branch office.

• Scenario: Authenticating dial-up connections with RADIUS NAS
  A Network Access Server (NAS) running on the system can route authentication requests from dial-in clients to a separate Remote Authentication Dial In User Service (RADIUS) server. If authenticated, RADIUS can also control the IP addresses assigned to the user.

• Scenario: Managing 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. You can use group policies, along with IP filtering, to permit and restrict access to specific IP addresses on your network.

• Scenario: Sharing a modem between logical partitions using L2TP
  You have virtual Ethernet set up across four logical partitions. You want selected logical partitions to share a modem to access an external LAN.

Parent topic: