Re: [Ntp] Secdir last call review of draft-ietf-ntp-port-randomization-06

Fernando Gont <fgont@si6networks.com> Tue, 23 March 2021 08:13 UTC

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To: Sean Turner <sean@sn3rd.com>, secdir@ietf.org
Cc: draft-ietf-ntp-port-randomization.all@ietf.org, last-call@ietf.org, ntp@ietf.org
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From: Fernando Gont <fgont@si6networks.com>
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Date: Tue, 23 Mar 2021 01:46:30 -0300
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Subject: Re: [Ntp] Secdir last call review of draft-ietf-ntp-port-randomization-06
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Hi, Sean,

Thanks for your review!

Cheers,
Fernando




On 21/3/21 12:31, Sean Turner via Datatracker wrote:
> Reviewer: Sean Turner
> Review result: Ready
> 
> Hi! I am doing this review as part of the Security Directorate.
> 
> This I-D updates NTP v4 [RFC 5095] to recommend the use of transport-protocol
> ephemeral port randomization for those modes where use of the NTP well-known
> port is not required. The port randomization recommendation is based on BCP 156
> [RFC6056], which recommends the randomization of transport-protocol ephemeral
> ports. This I-D is in fact co-authored by one of the co-authors of BCP 156. The
> I-D motivates the recommendation and enumerates some considerations as they
> relate to NTP as well as identifies the exact changes (i.e., two-sentence
> dstport replaced with more text). It also appears that this I-D is well
> implemented as noted in the implementation status section.
> 
> 
> 


-- 
Fernando Gont
SI6 Networks
e-mail: fgont@si6networks.com
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