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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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Configuring the Filter

Configuring the Filter

Context

A filter contains packet characteristics specified by users, and the device processes the packets matching these characteristics first. You can configure a filter by using an ACL.

On switches except the CE6870EI and CE6875EI, the following parameters cannot be specified for the ACL referenced by a filter. Otherwise, the filter is invalid.
  • Basic ACL: vpn-instance
  • Advanced ACL: vpn-instance
    NOTE:

    The CE5880EI and CE6880EI do not support the icmp-type and igmp-type parameters in advanced ACLs.

  • Layer 2 ACL: 802.3
  • Basic ACL6: vpn-instance
  • Advanced ACL6: destination, dscp, and vpn-instance
On the CE6870EI and CE6875EI, only the following parameters can be specified for the ACL referenced by a filter. If other parameters are specified, the filter is invalid.
  • Basic ACL: source, time-range
  • Advanced ACL: protocol, source, time-range, ttl-expired, source-port, destination-port, igmp-type
  • Layer 2 ACL: source-mac, time-range, type, vlan
  • Basic ACL6: source, time-range
  • Advanced ACL6: protocol, source, time-range, source-port, icmp6-type, destination-port
NOTE:

When a blacklist and a filter are configured and the same ACL is applied to them, the filter takes effect.

For the CE6870EI running V200R002C50 and later versions, the filter no longer supports advanced ACLs with the source port number and TCP flag as matching rules. If a filter using the source port number or TCP flag as a matching rule is configured on a switch running a version earlier than V200R002C50, the filter becomes invalid after the switch is upgraded to V200R002C50 or a later version.

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. Run any of the following commands to configure a filter:
    • filter packet-type arp acl acl-number

      An ARP-based ACL can be applied to a filter.

      NOTE:

      CE6870EI and CE6875EI do not support this command.

    • filter packet-type { icmp | igmp | ospf | dhcp } acl acl-number

      A basic ACL or an advanced ACL can be applied to a filter.

    • filter packet-type { icmpv6 | ospfv3 | dhcpv6 } acl ipv6 acl6-number

      A basic ACL6 or an advanced ACL6 can be applied to a filter.

    • filter packet-type { snmp | dns | ftp | telnet | ssh | bgp } acl { acl-number | ipv6 acl6-number }

      A basic ACL, an advanced ACL, a basic ACL6, or an advanced ACL6 can be applied to a filter.

    By default, no filter is available on a device.

    For details about ACL configuration, see ACL Configuration.

  4. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074765

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