[En-Nut-Discussion] local tcp port randomisation

[Ole Reinhardt]

Hi All,

> I'm a little bit in doubt about NutGetMillis() providing enough
> variations. But as Michel reported, it indeed solved his problem. In
> addition, this code provides
> 
> 1. Less predictable port numbers than simple incrementing with reasonable re-use frequency.
> 2. Keeping port numbers in the range recommended by IANA.

I implemented the suggested changes today and updated tcpsock.c and
udpsock.c accordingly. See the trunk.

For further security much more effort would have to be spend, but I
think this will give us at least better results than the old
implementation.

Best regards,

Ole Reinhardt

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