>> Part of the issue may be that SNMP and Syslog look at the source IP
>> address and then WUG will associate them with that object.

For SNMP traps, WUG looks not only at the source address of the packet, but
also the source address that is embedded in the payload of the trap.  This
is easily alterable without incurring any firewall/routing issues that might
come up from spoofing the IP source address of the packet.

We commonly use a tool called trapgen.exe to generate traps for testing, you
can download it here:
http://www.ncomtech.com/download.htm

When using it, the command line switch to alter the internal address is -i.
So for instance to send a trap to a WUG at the fictional DNS
wug.mydomain.com that appears to be from 10.1.2.3, use something like this:

trapgen -d wug.mydomain.com -i 10.1.2.3 -g 6 -s 1

(In practice you'd need to add some variable bindings to the command line to
convey some more info with the trap).

--Tim Farley
  IPSWITCH


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