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Configuration Guide - Security

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, separating the management plane from the service plane, security risks.
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Example for Configuring URPF (except CE6870EI and CE6875EI)

Example for Configuring URPF (except CE6870EI and CE6875EI)

Networking Requirements

As shown in Figure 15-6, the Switch is connected to the Internet Service Provider (ISP) router through 10GE1/0/1 and connected to user networks through 10GE2/0/1. The administrator wants that the Switch can defend against source address spoofing attacks. If the Switch cannot provide this function, unauthorized users will occupy too many service resources by sending valid service requests, and authorized users cannot communicate with each other due to no response.

Figure 15-6 Networking diagram of URPF configuration

Configuration Roadmap

Configure URPF on the user-side interface 10GE2/0/1 of the device and to prevent source IP address spoofing attacks from users.

NOTE:

Route symmetry is ensured in this example, so the URPF strict check is used.

Procedure

  1. Configure the URPF check mode on the interface.(except CE6880EI and CE5880EI)

    <HUAWEI> system-view
    [~HUAWEI] sysname Switch
    [*HUAWEI] commit
    [~Switch] interface 10ge 2/0/1
    [*Switch-10GE2/0/1] ip urpf enable
    [*Switch-10GE2/0/1] ip urpf strict
    [*Switch-10GE2/0/1] commit
    [~Switch-10GE2/0/1] quit

  2. Configure the URPF check mode on the interface (CE6880EI and CE5880EI).

    <HUAWEI> system-view
    [~HUAWEI] sysname Switch
    [*HUAWEI] commit
    [~Switch] interface 10ge 2/0/1
    [~Switch-10GE2/0/1] undo portswitch
    [*Switch-10GE2/0/1] ip urpf enable
    [*Switch-10GE2/0/1] ip urpf strict
    [*Switch-10GE2/0/1] commit
    [~Switch-10GE2/0/1] quit

  3. Verify the configuration.

    Run the display this command on 10GE2/0/1 to check the URPF configuration (except CE6880EI and CE5880EI).

    [~Switch-10GE2/0/1] display this
    #
    interface 10GE2/0/1
     ip urpf enable   
     ip urpf strict
    #
    return 

    Run the display this command on 10GE2/0/1 to check the URPF configuration (CE6880EI and CE5880EI).

    [~Switch-10GE2/0/1] display this
    #
    interface 10GE2/0/1
     undo portswitch
     ip urpf enable   
     ip urpf strict
    #
    return 

Configuration Files

Switch configuration file (except CE6880EI and CE5880EI)

#
sysname Switch
#
interface 10GE2/0/1
 ip urpf enable   
 ip urpf strict
#
return 

Switch configuration file (CE6880EI and CE5880EI)

#
sysname Switch
#
interface 10GE2/0/1
 undo portswitch
 ip urpf enable   
 ip urpf strict
#
return 
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Updated: 2019-04-20

Document ID: EDOC1100074765

Views: 22935

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