Filter rules for a host

About this task

Host-based filter rules can be used to traffic wanted or ignored traffic according to the host that is sending the traffic.

To specify trafficking that is based on ports, use a port range filter. See Filter rules for a port range.

To specify a filter rule for a host:

Note: Do not mix filter rules from the two traffic segmentation methods. You can only use the specified filter rules for the chosen method.

Enter the IP address of the host.
- If this value is left blank, all host IPs are captured based on the specified port number. However, the netmask size setting cannot be used without a valid host value.
- To add a host, click the Add More.
If host traffic is coming from a specific netmask, enter the value here.
If the Port1 and Port2 check box are unspecified, all traffic from the host/netmask is filtered based on the rule. For a host-based rule, do not specify specific ports.
From the Add to drop down, select the DNCA instance to which to apply the rule.
Then, you can select the type of filter rule:
- Desired - Specified traffic is directed to the selected instance.
- Ignored - Specified traffic is ignored and dropped from further processing. See Ignored traffic filter rules.
Click Add.
The filter rule is added to the specified instance and is immediately applied to incoming traffic.