Hi,
Looking into it a bit futher, maybe a good place to set a fixed source
port would be in get_target_sessions().
What if I set the
thissess->localname to my agent's IP address
and the
thissess->local_port to my specified port (32800 for example)?
thanks,
Erez.
-----Original Message-----
From: Makavy, Erez (Erez)
Sent: Monday, February 26, 2007 6:55 PM
To: 'Wes Hardaker'
Cc: [email protected]
Subject: RE: Disabling engineID Probe for Informs
Hi,
It then seems that the only solution for supporting informs in a
"firewalled" system, is to use a fixed port (or range of ports) as the
source port for the sent informs, so that the returned acknowledgements
can be accepted (by adding rule to the firewall, accpeting the
pre-defined UDP port).
Can you give a pointer to where to do that in net-snmp's code?
I guess it's somewhere in the UDP transport f_send function...
Oh, I'm assuming that there would be no problem that a few sessions
would use the same UDP port to receive the ACKs, and that net-snmp uses
the SNMP message ID to correlate the ACK to the inform.
thanks,
Erez.
-----Original Message-----
From: Wes Hardaker [mailto:[EMAIL PROTECTED]
Sent: Thursday, February 22, 2007 12:37 AM
To: Makavy, Erez (Erez)
Cc: [email protected]
Subject: Re: Disabling engineID Probe for Informs
>>>>> "EM" == Erez Makavy <Makavy> writes:
EM> Before an inform is sent, an automatic engineID probe is sent to the
EM> manager-station, because of the firewall blocking unknown incoming
EM> UDP port, the probe response is not received, and the inform is not
EM> sent.
I actually thought it was possible to specify the engineID already (but
I didn't actually double check) so the probe wouldn't happen.
Note: since an inform *requires* a response in the first place, you'll
have a similar issue with the firewall blocking the inform response and
you should consider using "traps" instead which don't solicit a response
from the manager.
--
Wes Hardaker
Sparta, Inc.
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