Re: SNMP Informs sent from snmpd do not work if firewall is enabled on the machine

"iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT" is
already present in the firewall configuration but still it does not
work :(

Any other suggestions?

-Datta.

On Mon, Jun 6, 2011 at 2:28 PM, Dave Shield <[email protected]> wrote:
> On 2 June 2011 04:58, Dattaram Porob <[email protected]> wrote:
>> In case of a v2 inform, the Inform message is sent by the agent
>> (net-snmp 5.6.1) and received by the receiver but the ACK sent by the
>> receiver does not reach the agent since it is blocked by the firewall.
>
>> In case of a v3 Inform, before sending the actual Inform message, the
>> agent tries to discover the engineId of the receiver. The response to
>> the discover is not received by the agent and so it is not be able to
>> send out the Inform message itself.
>
> Both of those feel like a problem with the firewall configuration.
> It ought to accept the response to an outgoing request.
>
>
>> Is there any way to get around this problem; any configuration in
>> net-snmp or for that matter any configuration in iptables ?
>
> A rule such as
>
>   iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
>
> should allow this to work as expected.
>
> Dave
>

------------------------------------------------------------------------------
Simplify data backup and recovery for your virtual environment with vRanger.
Installation's a snap, and flexible recovery options mean your data is safe,
secure and there when you need it. Discover what all the cheering's about.
Get your free trial download today. 
http://p.sf.net/sfu/quest-dev2dev2 
_______________________________________________
Net-snmp-users mailing list
[email protected]
Please see the following page to unsubscribe or change other options:
https://lists.sourceforge.net/lists/listinfo/net-snmp-users