Scenarios
If a network ACL rule no longer meets your requirements, you can modify the port, protocol, and source/destination it.
Modifying rules may affect how and where traffic is directed. Be careful with this operation as it may interrupt services.
Notes and Constraints
Default network ACL rules cannot be modified or deleted.
Procedure
- Log in to the management console.
- Click
in the upper left corner and choose Network > Virtual Private Cloud.The Virtual Private Cloud page is displayed.
- In the navigation pane on the left, choose Access Control > Network ACLs.
The network ACL list is displayed.
- In the network ACL list, locate the target network ACL and click its name.
The network ACL summary page is displayed.
- Click the Inbound Rules or Outbound Rules tab, locate the target rule, click Modify in the Operation column, and modify parameters based on Table 1.
Table 1 Parameter descriptions Parameter
Description
Example Value
Type
Network ACL type. There are two options:
- IPv4
- IPv6
IPv4
Action
The action for the network ACL rule. There are two options:
- Allow: allows matched traffic in and out of a subnet.
- Deny: denies matched traffic in and out of a subnet.
Allow
Protocol
The protocol supported by the network ACL to match traffic. The value can be TCP, UDP, or ICMP.
TCP
Source
The source from which the traffic is allowed. The source can be an IP address, IP address range, or IP address group.
Either the source or the destination can use the IP address group.
- IP address:
- Single IP address: 192.168.10.10/32 (IPv4); 2002:50::44/128 (IPv6)
- All IP addresses: 0.0.0.0/0 (IPv4); ::/0 (IPv6)
- IP address range: 192.168.1.0/24 (IPv4); 2407:c080:802:469::/64 (IPv6)
- IP address group: ipGroup-A
192.168.0.0/24
Source Port Range
The source ports or port ranges used to match traffic. The value ranges from 1 to 65535.
22-30
Destination
The destination to which the traffic is allowed. The destination can be an IP address, IP address range, or IP address group.
Either the source or the destination can use the IP address group.
- IP address:
- Single IP address: 192.168.10.10/32 (IPv4); 2002:50::44/128 (IPv6)
- All IP addresses: 0.0.0.0/0 (IPv4); ::/0 (IPv6)
- IP address range: 192.168.1.0/24 (IPv4); 2407:c080:802:469::/64 (IPv6)
- IP address group: ipGroup-A
0.0.0.0/0
Destination Port Range
The destination ports or port ranges used to match traffic. The value ranges from 1 to 65535.
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
- Click OK.