Hi,
I using ossec 2.8.1 on Ubuntu 14.04 running locally only, no agents. I have
the following local_rules.xml defined to exercise syslog monitoring :
$ sudo more /var/ossec/rules/local_rules.xml
<group name="ossectester,local">
<rule id="100000" level="5">
<match>OSSEC-TESTER-RULE</match>
<description>OSSEC Test Alert</description>
</rule>
</group>
When this rule triggers (by running 'logger "OSSEC-TESTER-RULE"), an active
response is executed due to this ossec.conf:
<command>
<name>post2slack</name>
<executable>ar_slack.sh</executable>
<expect></expect>
<timeout_allowed>no</timeout_allowed>
</command>
<active-response>
<command>post2slack</command>
<location>local</location>
<level>4</level>
</active-response>
This works as expected provided I do not populate the command <expect>
field. If I specify <expect>srcip</expect> the alert still triggers,
however, the active response is no longer executed. the syslog entry ends
up as something like:
Feb 9 19:19:53 myhostname gleeder: OSSEC-TESTER-RULE
I can't determine from the documentation whether this should work or not.
myhostname resolves to 127.0.0.1 but I haven't got any white_list IPs
specified anyway (my end goal is a to have some white_listing which is why
I specified srcip).
Is there an implicit white_list default or another reason why specifying
srcip causes the response to no longer execute?
Is <expect>srcip</expect> required for white_list to work?
Best regards,
Glen
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<ossec_config>
<alerts>
<log_alert_level>4</log_alert_level>
<email_alert_level>0</email_alert_level>
</alerts>
<rules>
<include>rules_config.xml</include>
<include>local_rules.xml</include>
</rules>
<syscheck>
<disabled>yes</disabled>
</syscheck>
<rootcheck>
<disabled>yes</disabled>
</rootcheck>
<command>
<name>post2slack</name>
<executable>ar_slack.sh</executable>
<expect></expect>
<timeout_allowed>no</timeout_allowed>
</command>
<active-response>
<command>post2slack</command>
<location>local</location>
<level>4</level>
</active-response>
<localfile>
<log_format>syslog</log_format>
<location>/var/log/syslog</location>
</localfile>
</ossec_config>
