[Gen-art] Genart last call review of draft-ietf-regext-login-security-05

[Brian Carpenter via Datatracker <[e-mail]>]

Reviewer: Brian Carpenter
Review result: Ready with Issues

Gen-ART Last Call review of draft-ietf-regext-login-security-05

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Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
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Document: draft-ietf-regext-login-security-05.txt
Reviewer: Brian Carpenter
Review Date: 2019-11-03
IETF LC End Date: 2019-11-12
IESG Telechat date:  

Summary: Ready with minor issues
--------

Minor issues:
-------------

I found section 2 "Migrating to Newer Versions of This Extension"
a little hard to follow. Firstly, am I correct in assuming that
"a new version" means a version number higher than 1.0, e.g.
"loginSec-1.1"? That is probably the intended meaning, but I think
it needs to be explicit. Maybe state that this document defines
"loginSec-1.0" and future documents can define other minor and major
versions such as "loginSec-1.1" or "loginSec-2.0".  

Then "(for a temporary migration period)" is a bit vague. I think
it would be useful to suggest the order of magnitude of the overlap
period: days?, months?; hopefully not years.

I also think a short discussion of adding & removing versions is
needed in the Security Considerations, since the reason for a new
version might be the discovery of a vulnerability in the current
version. That's when a short migration period is desirable.

FYI, there are some other extension design considerations in
https://tools.ietf.org/html/rfc6709#section-4 .

Nits:
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"1.  Introduction

   This document describes an Extensible Provisioning Protocol (EPP)
   extension for enhancing the security of the EPP login command in EPP
   RFC 5730.  The enhancements include supporting longer passwords (or
   passphrases) than the 16-character maximum and providing a list of
   security events in the login response.  The password (current and
   new) in EPP RFC 5730 can be overridden..."

"RFC 5730" should either be in parenthesis as "(RFC 5730)" or
a reference "[RFC5730]" (twice).