Stupid solution:
Periodically "iptables -nL > /var/iptables_check/current"
And syscheck that directory with something like:
<directories realtime="yes" report_changes="yes"
check_all="yes">/var/iptables_check</directories>

On Fri, Apr 22, 2011 at 5:01 PM, dan (ddp) <[email protected]> wrote:
> I know what you're saying, and I thought the check_diff option did
> that. My mistake.
> If not, I don't think there's a way to do it.
>
> On Fri, Apr 22, 2011 at 4:53 PM, satish patel <[email protected]> wrote:
>> Thanks Dan,
>>
>> I have that option, And its working but problem is its dumping full
>> iptables -L -n output on my email alerts. I want only diff output of
>> particular changes in iptables. Do you know what i am saying ?
>>
>>  <!-- Monitoring firewall rules -->
>>  <rule id="100004" level="10">
>>        <if_sid>530</if_sid>
>>        <match>ossec: output: 'iptables -S</match>
>>        <check_diff />
>>        <description>Change made to iptables</description>
>>  </rule>
>>
>>
>>
>>
>> On Fri, Apr 22, 2011 at 4:35 PM, dan (ddp) <[email protected]> wrote:
>>> It should be possible. Try adding <check_diff /> to the rule.
>>>
>>> More info:
>>> http://dcid.me/2010/03/alerting-when-a-log-or-output-of-a-command-changes/
>>>
>>> On Fri, Apr 22, 2011 at 4:28 PM, satish patel <[email protected]> wrote:
>>>> Thanks dan,
>>>>
>>>> Is it possible i get diff output of my iptables command? Currently its
>>>> dumping full output. it would be good if we have only diff output.
>>>>
>>>> -S
>>>>
>>>>
>>>> On Fri, Apr 22, 2011 at 4:11 PM, dan (ddp) <[email protected]> wrote:
>>>>> There is no setting to do what you want. You'll have to dig into the 
>>>>> source.
>>>>>
>>>>> On Fri, Apr 22, 2011 at 3:46 PM, satish patel <[email protected]> wrote:
>>>>>> Hey Guys!
>>>>>>
>>>>>> I am monitoring iptable output and doing check_diff to compare and
>>>>>> alert but somehow i am getting half output of "iptables -L -n"  I knew
>>>>>> there is a limit of email alert output.
>>>>>>
>>>>>> can we increase limit ?
>>>>>>
>>>>>> -S
>>>>>>
>>>>>
>>>>
>>>
>>
>

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