Help Center/ Virtual Private Cloud/ User Guide (Ankara Region)/ Access Control/ Network ACL/ Management Network ACL Rules/ Adding a Network ACL Rule
Updated on 2024-04-15 GMT+08:00
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Adding a Network ACL Rule

Scenarios

Add an inbound or outbound rule based on your network security requirements.

Notes and Constraints

A network ACL can contain no more than 20 rules in one direction, or performance will deteriorate.

Procedure

  1. Log in to the management console.
  1. Click in the upper left corner and choose Network > Virtual Private Cloud.

    The Virtual Private Cloud page is displayed.

  2. In the navigation pane on the left, choose Access Control > Network ACLs.
  3. Locate the target network ACL and click its name to switch to the page showing details of that particular network ACL.
  4. On the Inbound Rules or Outbound Rules tab, click Add Rule to add an inbound or outbound rule.
    • Click + to add more rules.
    • Locate the row that contains the network ACL rule and click Replicate in the Operation column to replicate an existing rule.
    Table 1 Parameter descriptions

    Parameter

    Description

    Example Value

    Action

    The action in the network ACL. This parameter is mandatory. You can select a value from the drop-down list. Currently, the value can be Allow or Deny.

    Allow

    Protocol

    The protocol supported by the network ACL. This parameter is mandatory. You can select a protocol from the drop-down list.

    You can select TCP, UDP, ICMP, or All.

    TCP

    Source

    The source from which the traffic is allowed. The source can be an IP address or IP address range.

    • IPv4 address: xxx.xxx.xxx.xxx/32
    • Subnet: xxx.xxx.xxx.0/24
    • Any IP address: 0.0.0.0/0

    0.0.0.0/0

    Source Port Range

    The source port number or port number range. The value ranges from 1 to 65535. For a port number range, enter two port numbers connected by a hyphen (-). For example, 1-100.

    You must specify this parameter if TCP or UDP is selected for Protocol.

    22, or 22-30

    Destination

    The destination to which the traffic is allowed. The destination can be an IP address or IP address range.

    • IPv4 address: xxx.xxx.xxx.xxx/32
    • Subnet: xxx.xxx.xxx.0/24
    • Any IP address: 0.0.0.0/0

    0.0.0.0/0

    Destination Port Range

    The destination port number or port number range. The value ranges from 1 to 65535. For a port number range, enter two port numbers connected by a hyphen (-). For example, 1-100.

    You must specify this parameter if TCP or UDP is selected for Protocol.

    22, or 22-30

    Description

    Supplementary information about the network ACL rule. This parameter is optional.

    The description can contain a maximum of 255 characters and cannot contain angle brackets (< or >).

    N/A
  5. Click OK.