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Configuration Guide - Security

S7700 and S9700 V200R011C10

This document describes the configurations of Security, including ACL, reflective ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, separating the management plane from the service plane, security risks.
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Configuring Defense Against UDP Flood Attacks

Configuring Defense Against UDP Flood Attacks

Context

If an attacker sends a large number of UDP packets with specified destination port numbers to a target host in a short time, the target host is busy with these UDP packets and cannot process normal services. To prevent UDP flood attacks, enable defense against UDP flood attacks.

The device enabled with defense against UDP flood attacks discards UDP packets with port numbers 7, 13, and 19.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run anti-attack udp-flood enable

    Defense against UDP flood attacks is enabled.

    By default, defense against UDP flood attacks is enabled.

    NOTE:
    You can also run the anti-attack enable command in the system view to enable attack defense against all attack packets including malformed packets.

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Updated: 2019-04-01

Document ID: EDOC1000178319

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