XML section name
In the active response configuration section, you bind an existing command to one or more rules or rule types and specify additional criteria for when to actually execute the command. It is possible to have as many responses as needed, but each must be in their own separate
Setting it to
yes on an agent will disable active-response for that agent only, while setting it in the manager’s
ossec.conf file will disable active-response on the manager and all agents.
This option is available on server, local, and agent installations.
|Allowed values||The options accepted are yes and no|
This is used to link the response to the command.
|Allowed values||Any defined active response command name|
This indicates on which system(s) the command should be executed.
|Allowed values||local||This runs the command on the agent that generated the event.|
|server||This runs the command on the Wazuh manager.|
|defined-agent||This runs the command on a specific agent identified by agent_id|
|all||This runs the command on the Wazuh manager and on all agents. Use with caution.|
If the application that interfaces with your edge firewall runs on one of your agents, you might have a firewall-block-edge command that runs a command on that agent to blacklists an offending IP on the edge firewall.
The ID of the agent to execute the active response command (used when defined-agent is set).
|Allowed values||Any agent id number, as long as defined-agent has been specified as the location.|
This defines a minimum severity level required for the command to be executed.
|Allowed values||Any level from 1 to 16|
This requires that a rule must belong to one or more rule groups for the command to be executed.
|Allowed values||Any rule group is allowed. Multiple groups should be separated with a pipe character (“|”).|
Observe that all groups must be finished by comma.
This limits command execution to only when one or more listed rules fire.
|Allowed values||Any rule identification. Multiple IDs can be specified if separated by a comma.|
This specifies how long in seconds until the reverse command is executed. When
repeated_offenders is used,
timeout only applies to the first offense.
|Allowed values||A positive number (seconds)|
This is a comma-separated list of increasing timeouts in minutes for repeat offenders. There can be a maximum of 5 entries. This must be configured directly in the ossec.conf file of the agent, even when using a manager/agent setup with centralized configuration of other settings via agent.conf.
|Allowed values||A positive number (minutes)|
This indicates the path to root CA certificate. The agent needs the certificate with which the WPK was signed in order to be updated.
|Allowed values||Path to root CA certificate|
Example of configuration¶
<active-response> <disabled>no</disabled> <command>host-deny</command> <location>defined-agent</location> <agent_id>032</agent_id> <level>10</level> <rules_group>sshd,|pci_dss_11.4,</rules_group> <timeout>1</timeout> <repeated_offenders>1,5,10</repeated_offenders> </active-response>