Warren Kumari <war...@kumari.net> wrote:
> I’m also wondering *how* it is doing this — to increment by 2 it sounds
> like there is state being kept - perhaps dig simply relies on the kernel
> for the source port and isn’t randomizing at all ( and so the difference is
> actually OS difference, and not dig differences?
Yes. It's also a protocol family difference, because Mac OS does randomize
over IPv4. (Not doing so over IPv6 must be a bug....)
There are sysctls:
net.inet.tcp.randomize_ports: 0
net.inet.udp.randomize_ports: 1
The net.inet sysctls for UDP and TCP should also apply to inet6...
Tony.
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f.anthony.n.finch <d...@dotat.at> http://dotat.at/
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