Re: [tkined] Passing Original IP address on.

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Cary> We may have to do something similiar. My _understanding_ is
Cary> that to do this you would have to use a raw socket and form the
Cary> IP header yourself, since the normal UDP networking code in the
Cary> kernel will always put its own IP address on the outgoing
Cary> packet.

With SNMPv1 traps, you don't need to fake IP headers. There is an
agent_addr field in the SNMPv1 trap PDU which can be set and which is
accepted by most management stations as the source address of the
trap.

In SNMPv2 traps, one would expect that the identity of the trap
message is contained in the varbind list. This is currently not the
case. See the discussion on the SNMPv3 mailing list what people think
about adding these objects to SNMPv2 trap messages.

Juergen

-- 
Juergen Schoenwaelder  schoenw@ibr.cs.tu-bs.de http://www.cs.tu-bs.de/~schoenw
Technical University Braunschweig, Dept. Operating Systems & Computer Networks
Bueltenweg 74/75, 38106 Braunschweig, Germany.        (Tel. +49 531 / 391 3283)
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 Previous message: Erik Schoenfelder: "Re: [tkined] Questions about scotty"
 Maybe in reply to: Richard Swain - Communications Consultant: "[tkined] Passing Original IP address on."