I would like to thank the people who responded to my first posting.
We changed the NMMGR Checksum variable and restarted the network software.
But the NS3000 packets (NVT) still have a zero tcp checksum field.
Anything else I should look at?  We are running MPE flash iX 4.0 NMMGR B.04.06
 
We have an HP3000 and are using the NS3000 communications programs.
I have set up a proxy program on a Sun running solaris 2.3.  The sun
seems to ignore connections requests from the NS3000 software.  In
running a sniffer on the network it seems that the NS3000 client,
nvt, has a zero tcp checksum field.  I have looked at tcp source
code, tcp_input, and if a packet has a bad checksum it is dropped.
Does the HP set an incorrect tcp checksum field? or am I missing
something.
 
Thanks for any help.
 
dave kaas
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| Dave Kaas                         | Internet: [log in to unmask]               |
| Box 300 M/S A1-05                 |                                      |
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