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also with option "snmptrapd -d", I can't see anything.
But I can receive the messages with tcpdump. Can it be a firewall problem?

Thomas Falkenberg




"Dave Shield"
Sent by: net-snmp-users-bounces@lists.sourceforge.net
18.07.07 14:54

To
Thomas Falkenberg/Germany/IBM@IBMDE
cc
net-snmp-users@lists.sourceforge.net
Subject
Re: snmptrapd doesn't log SNMP trap messages






On 18/07/07, Thomas Falkenberg wrote:
> I can see the traps on the Linux client with tcpdump, but the
> snmptrapd-Daemon doesn't log it.


Is the 'snmptrapd' daemon receiving the notifications?
Try running it using the flag '-d', and see whether it displays
a raw packet dump of the incoming requests.


> I use NET-SNMP Version 5.1.2 .


Then you shouldn't have a problem with access control.
(More recent versions of the trapd require explicit authorisation
of acceptable community strings before displaying traps.
But this ancient version does not).

I'd be suspicious about firewall filtering (e.g. iptables) on the
receiving system - particularly if "snmptrapd -d ..." doesn't
show any incoming packets.


Dave

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also with option "snmptrapd -d",
I can't see anything.


But I can receive the messages with
tcpdump. Can it be a firewall problem?




Thomas Falkenberg










"Dave Shield"
<D.T.Shield@csc.liv.ac.uk>


Sent by: net-snmp-users-bounces@lists.sourceforge.net

18.07.07 14:54







To

Thomas Falkenberg/Germany/IBM@IBMDE

cc

net-snmp-users@lists.sourceforge.net

Subject

Re: snmptrapd doesn't log SNMP trap
messages














On 18/07/07, Thomas Falkenberg <TFALKEN@de.ibm.com>
wrote:

> I can see the traps on the Linux client with tcpdump, but the

> snmptrapd-Daemon doesn't log it.



Is the 'snmptrapd' daemon receiving the notifications?

Try running it using the flag '-d', and see whether it displays

a raw packet dump of the incoming requests.





> I use NET-SNMP Version 5.1.2 .



Then you shouldn't have a problem with access control.

(More recent versions of the trapd require explicit authorisation

of acceptable community strings before displaying traps.

But this ancient version does not).



I'd be suspicious about firewall filtering (e.g. iptables) on the

receiving system - particularly if "snmptrapd -d ..." doesn't

show any incoming packets.





Dave



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