Creating a Mirror Filter

Scenarios

A mirror filter is a set of inbound rules and outbound rules to determine the traffic that is mirrored. You can specify matching criteria, such as priority and action for each rule.

• Inbound rules match the traffic received by a mirror source.
• Outbound rules match the traffic sent by a mirror source.

A mirror filter takes effect only after it is associated with mirror sessions.

Mirror Filter Rule Examples

Procedure

1. Go to the mirror filter list page.
2. In the upper right corner of the mirror filter list, click Create Mirror Filter.

   The Create Mirror Filter page is displayed.

3. Set basic information about the mirror filter as prompted.

   Table 2 Parameters for configuring basic information

   Parameter	Description	Example Value
   Name	Mandatory Enter the name of the mirror filter. The name: Must contain 1 to 64 characters. Can contain letters, digits, underscores (_), hyphens (-), and periods (.).	mirror-filter-01
   Description	Optional Enter the description of the mirror filter in the text box as required.	-

4. Click Add Rule in the Inbound Rules area to add inbound rules.
   You can click to add more inbound rules.

   Table 3 Inbound rule parameter description

   Parameter	Description	Example Value
   Priority	Priority of a mirror filter rule. A priority value can be from 1 to 65535. A smaller value indicates a higher priority. Priorities of inbound rules must be unique for each mirror filter. A mirror filter can contain multiple rules and the rules are matched in ascending order of priority. For details, see the matching process of mirror filter rules.	1
   Protocol	Select a network protocol. If you select TCP, you can customize the source and destination port ranges. If you select UDP, you can customize the source and destination port ranges. If you set Type to IPv4 and select ICMP, all ports are specified for source and destination port ranges by default. If you set Type to IPv6 and select ICMPv6, all ports are specified for source and destination port ranges by default. If you select All, all network protocols are supported and all ports are specified for source and destination port ranges by default.	TCP
   Action	Whether to accept or reject inbound traffic of a mirror source. If you set Action to Accept, the traffic will be mirrored to the mirror target. If you set Action to Reject, the traffic will not be mirrored to the mirror target.	Accept
   Type	IP address version of inbound traffic. You can specify: IPv4 IPv6	IPv4
   Source	Source of inbound traffic. You can enter: A single IP address: IP address/mask Example IPv4 address: 192.168.10.10/32 Example IPv6 address: 2002:50::44/128 An IP address range in CIDR notation: IP address/mask Example IPv4 address range: 192.168.52.0/24 Example IPv6 address range: 2407:c080:802:469::/64 All IP addresses 0.0.0.0/0 represents all IPv4 addresses. ::/0 represents all IPv6 addresses.	10.0.0.0/24
   Source Port Range	Source port range of inbound traffic. Port range: 1 to 65535 Use a hyphen (-) to connect the start port and the end port, for example, 22-23. The end port cannot be smaller than the start port. If not specified or 1-65535 is specified, all ports are used.	22-23
   Destination	Destination of inbound traffic. You can enter: A single IP address: IP address/mask Example IPv4 address: 192.168.10.10/32 Example IPv6 address: 2002:50::44/128 An IP address range in CIDR notation: IP address/mask Example IPv4 address range: 192.168.52.0/24 Example IPv6 address range: 2407:c080:802:469::/64 All IP addresses 0.0.0.0/0 represents all IPv4 addresses. ::/0 represents all IPv6 addresses.	0.0.0.0/0
   Destination Port Range	Destination port range of inbound traffic. Port range: 1 to 65535 Use a hyphen (-) to connect the start port and the end port, for example, 22-23. The end port cannot be smaller than the start port. If not specified or 1-65535 is specified, all ports are used.	1-65535
   Description	Enter the description of the mirror filter rule in the text box as required.	-

5. Click OK.
6. Click Add Rule in the Outbound Rules area to add outbound rules.
   You can click to add more outbound rules.

   Table 4 Outbound rule parameter description

   Parameter	Description	Example Value
   Priority	Priority of a mirror filter rule. A priority value can be from 1 to 65535. A smaller value indicates a higher priority. Priorities of inbound rules must be unique for each mirror filter. A mirror filter can contain multiple rules and the rules are matched in ascending order of priority. For details, see the matching process of mirror filter rules.	1
   Protocol	Select a network protocol. If you select TCP, you can customize the source and destination port ranges. If you select UDP, you can customize the source and destination port ranges. If you set Type to IPv4 and select ICMP, all ports are specified for source and destination port ranges by default. If you set Type to IPv6 and select ICMPv6, all ports are specified for source and destination port ranges by default. If you select All, all network protocols are supported and all ports are specified for source and destination port ranges by default.	All
   Action	Whether to accept or reject outbound traffic of a mirror source. If you set Action to Accept, the traffic will be mirrored to the mirror target. If you set Action to Reject, the traffic will not be mirrored to the mirror target.	Reject
   Type	IP address version of outbound traffic. You can specify: IPv4 IPv6	IPv4
   Source	Source of outbound traffic. You can enter: A single IP address: IP address/mask Example IPv4 address: 192.168.10.10/32 Example IPv6 address: 2002:50::44/128 An IP address range in CIDR notation: IP address/mask Example IPv4 address range: 192.168.52.0/24 Example IPv6 address range: 2407:c080:802:469::/64 All IP addresses 0.0.0.0/0 represents all IPv4 addresses. ::/0 represents all IPv6 addresses.	192.168.0.0/24
   Source Port Range	Source port range of outbound traffic. Port range: 1 to 65535 Use a hyphen (-) to connect the start port and the end port, for example, 22-23. The end port cannot be smaller than the start port. If not specified or 1-65535 is specified, all ports are used.	All
   Destination	Destination of outbound traffic. You can enter: A single IP address: IP address/mask Example IPv4 address: 192.168.10.10/32 Example IPv6 address: 2002:50::44/128 An IP address range in CIDR notation: IP address/mask Example IPv4 address range: 192.168.52.0/24 Example IPv6 address range: 2407:c080:802:469::/64 All IP addresses 0.0.0.0/0 represents all IPv4 addresses. ::/0 represents all IPv6 addresses.	10.2.0.0/24
   Destination Port Range	Destination port range of outbound traffic. Port range: 1 to 65535 Use a hyphen (-) to connect the start port and the end port, for example, 22-23. The end port cannot be smaller than the start port. If not specified or 1-65535 is specified, all ports are used.	All
   Description	Enter the description of the mirror filter rule in the text box as required.	-

7. Click OK.
8. After setting the parameters, click Create Now.

   The mirror filter list page is displayed.

Follow-up Operations