> On 28 Apr 2016, at 19:18, Toralf Förster <toralf.foers...@gmx.de> wrote: > > Signed PGP part > On 04/28/2016 11:14 AM, Tim Wilson-Brown - teor wrote: > > Ports in, or ports out? > Ports in I meant, sry. > > > Closing inbound ports is a security precaution > The question is - if there's no program listening on that port, does > filtering that in-port has any effect ?
Normally, when there is a connection attempt to a closed port, your OS will reply and let the other end know the port is closed. With iptables, you can blackhole (drop) these requests instead. Or you can log them. Tim Tim Wilson-Brown (teor) teor2345 at gmail dot com PGP 968F094B ricochet:ekmygaiu4rzgsk6n
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