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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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Application Scenarios for Attack Defense

Application Scenarios for Attack Defense

As shown in Figure 5-8, when SwitchA undergoes attacks, its CPU usage increases and network services are affected. To provide secure network services, the following attack defense functions are configured on SwitchA:

  • Preventing malformed packet attacks

  • Limiting the rate of fragments to protect CPU and device resources

  • Preventing flood attacks:

    • Limiting the rate of TCP SYN packets to protect the CPU
    • Discarding UDP packets sent from specified ports
    • Limiting the rate of ICMP packets to protect the CPU
Figure 5-8  Networking diagram of attack defense

Updated: 2019-10-18

Document ID: EDOC1000178319

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