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CLI-based Configuration Guide - Security

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the network management feature supported by the device.
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Application Scenarios for IPSG

Application Scenarios for IPSG

IPSG is applicable to campus networks to prevent hosts from accessing the network by changing their IP addresses to statically configured IP addresses and prevent unauthorized hosts from gaining network access.

Figure 13-9 shows a campus network. The actual network may have a different address assignment plan. For most campus networks:

  • If a campus network is small, the hosts and printers use static IP addresses.
  • If a campus network is large, the hosts obtain IP addresses through DHCP and some printers use static IP addresses.

IPSG is configured on the devices (Router_1 and Router_2) to which users connect.

Figure 13-9  Typical IPSG networking

Scenario 1: IPSG prevents hosts from accessing the network by changing their IP addresses to statically configured IP addresses

  • Hosts can only use the IP addresses allocated by the DHCP server or static IP addresses configured by the administrator to access the network. If a host changes its IP address without permission, the host cannot access the network. This prevents hosts from obtaining network rights without permission.
  • Static IP addresses configured for the printers can only be used by printers, and cannot be used by hosts to access the network.

Scenario 2: IPSG prevents unauthorized hosts from gaining network access (static IP addresses are used on the network)

  • Each host can only connect to a fixed port and cannot change the access location. The traffic rate on ports is limited.
  • Users cannot access the intranet with their own computers. This prevents intranet resource leaks.

If hosts obtain IP addresses through DHCP, NAC (such as Portal authentication) can be configured to prevent unauthorized host access.

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Updated: 2019-05-20

Document ID: EDOC1100034236

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