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CLI-based Configuration Guide - Security

AR500, AR510, and AR530 V200R007

This document describes the configurations of Security, including AAA, DAA,NAC, BRAS Access, ACL, Firewall, Deep Security Defense, Local Attack Defense;Attack Defense, Traffic Suppression, ARP Security, Port Security, DHCP Snooping, IPSG, URPF, PKI, SSL, HTTPS, Keychain, separating the management plane from the service plane, security risks.
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Configuring ACL-based Packet Filtering in an Interzone

Configuring ACL-based Packet Filtering in an Interzone

Context

When data is transmitted between two zones, the ACL-based packet filtering firewall enforces the packet filtering policies according to the ACL rules.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    acl [ number ] acl-number [ match-order { config |  auto }]

    An ACL is created, and the ACL view is displayed.

    NOTE:

    The ACLs for filtering packet include basic ACLs and advanced ACLs.

  3. Run:

    rule

    An ACL rule is configured.

  4. Run:

    quit

    Return to the system view.

  5. Run:

    firewall interzone zone-name1 zone-name2

    The interzone view is displayed.

  6. Run:

    packet-filter acl-number { inbound | outbound }

    The ACL-based packet filtering is configured.

    You can configure ACL-based packet filtering in the interzone for inbound or outbound packets.

    1. When permit is used in the ACL rule:
      • When the ACL is applied to the inbound traffic, the system forwards the packets matching the ACL rule sent from the low-priority zone to the high-priority zone.
      • When the ACL is applied to the outbound traffic, the system forwards the packets matching the ACL rule sent from the high-priority zone to the low-priority zone.
    2. When deny is used in the ACL rule:

      • When the ACL is applied to the inbound traffic, the system discards the packets matching the ACL rule sent from the low-priority zone to the high-priority zone.
      • When the ACL is applied to the outbound traffic, the system discards the packets matching the ACL rule sent from the high-priority zone to the low-priority zone.
    3. When an ACL does not contain rules:

      • When the ACL is applied to the inbound traffic, the ACL does not take effect, and the system discards all packets sent from the low-priority zone to the high-priority zone.
      • When the ACL is applied to the outbound traffic, the ACL does not take effect, and the system discards all packets sent from the high-priority zone to the low-priority zone.

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Updated: 2019-05-25

Document ID: EDOC1000097287

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