[Samba] TCP Bad checksum packets on ports 445

Remy Zandwijk remy.zandwijk at falw.vu.nl
Thu Jan 25 17:31:48 GMT 2007

> viewing those sessions with ethereal, I see that approx 10% of the net 
> traffic is bad packets.
> Those Packets are tagged 'Bad Checksum'. The whole packets come from the 
> server to the clients, from port 445 or 139 to an unprivileged port.
> None of the SSH DNS or NTP contain these errors.

Are you sure the last statement is true? Bad checksum tagged packets occur if 
your network interface uses TCP checksum offloading. Take a look at:


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