No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

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.
Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of IPSG

Overview of IPSG

Definition

IP Source Guard (IPSG) implements source IP address filtering based on Layer 2 interfaces to prevent malicious hosts from posing as authorized hosts by using authorized hosts' IP addresses. In addition, IPSG prevents unauthorized hosts from accessing or attacking networks with the IP addresses configured by themselves.

Purpose

As networks continue to increase in scale, many attackers are forging source IP addresses to initiate network attacks (IP address spoofing attacks). Some attackers steal the IP addresses of authorized users to obtain network access rights and access networks. As a result, authorized users are unable to access networks or sensitive information may be intercepted. IPSG provides a mechanism to effectively defend against IP address spoofing attacks.

Figure 13-1 illustrates how IPSG defends against attacks. A malicious host steals an authorized host's IP address to obtain network access rights. IPSG is configured on the device's user-side interface or VLAN, so the device checks the IP packets received by the interface and discards the packets from malicious hosts to prevent IP address spoofing attacks.

Figure 13-1  IPSG is enabled on the network

Translation
Download
Updated: 2019-05-20

Document ID: EDOC1100034236

Views: 95213

Downloads: 53

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next