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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 a Blacklist

Configuring a Blacklist

Context

A blacklist is a group of users with particular characteristics. The device discards packets from users in the blacklist. You can apply an ACL to a blacklist.

NOTE:

The priorities of blacklist, whitelist, and user-defined flow are as follows:

  • If a blacklist and a whitelist reference the same ACL, the blacklist takes effect.

  • If a blacklist and a user-defined flow reference the same ACL, the blacklist takes effect.

  • If a whitelist and a user-defined flow reference the same ACL, the whitelist takes effect. For details, see Configuring the Whitelist.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run cpu-defend policy policy-name

    The attack defense policy view is displayed.

  3. Create a blacklist.

    • Run the blacklist blacklist-id acl acl-number1 command to create an IPv4 blacklist.

      The ACL referenced by the IPv4 blacklist can be a basic ACL, an advanced ACL, or a Layer 2 ACL. For details about ACL configuration, see ACL Configuration.

      By default, no IPv4 blacklist is configured.

    • Run the blacklist blacklist-id acl ipv6 acl-number2 command to create an IPv6 blacklist.

      Only advanced ACLs can be applied to the IPv6 blacklist. For details about ACL configuration, see ACL Configuration.

      By default, no IPv6 blacklist is configured.

    NOTE:
    • An attack defense policy can contain a maximum of eight blacklists (including IPv4 and IPv6 blacklists).
    • Packets matching the ACL applied to a blacklist are discarded, regardless of whether the ACL contains a permit or deny rule.
    • If an ACL has no rule, the blacklist that references the ACL does not take effect.
    • For the X series cards, an advanced ACL applied to the IPv6 blacklist can match only the source IP address.
    • When a basic ACL is applied to the blacklist, the ARP packets matching the ACL are discarded. For cards except X series cards, when an advanced ACL is applied to the blacklist, the ARP packets matching the ACL are also discarded.

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Updated: 2019-10-18

Document ID: EDOC1000178319

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