Re: NTP

From: Phil Regnauld (none@regnauld--BSD-DK.dk.lh.bsd-dk.dk)
Date: Fri 24 Aug 2001 - 12:54:35 CEST

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Date: Fri, 24 Aug 2001 12:54:35 +0200
From: Phil Regnauld <none@regnauld--BSD-DK.dk.lh.bsd-dk.dk>
To: bsd-dk@BSD-DK.dk
Subject: Re: NTP

Kristian Vilmann (vilmann) writes:
> On Fri, 24 Aug 2001, Sven Esbjerg wrote:
>
> > On Fri, Aug 24, 2001 at 12:24:28PM +0200, Flemming Jacobsen wrote:
> > > Det er min opfattelse at ntp altid er UDP 123-123.
> > > Er du sikker på at du har set rigtigt?
> >
> > NTP-Client 16338 -> NTP-Server 123
> > NTP-Server 123 -> NTP-Client 16338
> >
> > Ovenstående er en et eksempel på en session. Klient porten skifter fra gang
> > til gang.
>
> Bruger du ipfw eller ip-filter?
>
> IP-filter har en keep state option. Også til UDP.

Det har IPFW også:

allow udp from X to Y 123 keep-state

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