[netconf] a comment on draft-ietf-netconf-tls-client-server-15
Martin Bjorklund <mbj@tail-f.com> Wed, 23 October 2019 07:37 UTC
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Date: Wed, 23 Oct 2019 09:37:15 +0200
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From: Martin Bjorklund <mbj@tail-f.com>
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Subject: [netconf] a comment on draft-ietf-netconf-tls-client-server-15
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Hi, This is not a full review, just one thing that I stubmled upon. The model has (pruned to illustrate my point): container server-authentication { nacm:default-deny-write; must 'ca-certs or server-certs'; container ca-certs { if-feature "ts:x509-certificates"; presence ...; ... } container server-certs { if-feature "ts:x509-certificates"; presence ...; ... } } 1. If a server doesn't implement the feature ts:x509-certificates, the model effectively becomes: container server-authentication { nacm:default-deny-write; must 'ca-certs or server-certs'; } This must expression will never be true, which means that it is not possible to configure anything! 2. When this grouping is used in ietf-https-notifs, it looks like this: +--rw receivers +--rw receiver* [name] +--rw name string ... | +--rw server-authentication | | +--rw ca-certs! {ts:x509-certificates}? ... | | +--rw server-certs! {ts:x509-certificates}? ... Now, the container 'server-authentication' has nacm:default-deny-write, and its contents is mandatory (due to the must expression). This means that it is not possible to configure a single receiver without explicit NACM rules for this container. Is that really the intention? /martin
- [netconf] a comment on draft-ietf-netconf-tls-cli… Martin Bjorklund
- Re: [netconf] a comment on draft-ietf-netconf-tls… Martin Bjorklund
- Re: [netconf] a comment on draft-ietf-netconf-tls… Kent Watsen
- Re: [netconf] a comment on draft-ietf-netconf-tls… Martin Bjorklund
- Re: [netconf] a comment on draft-ietf-netconf-tls… Kent Watsen