Re: [Last-Call] [netmod] Secdir last call review of draft-ietf-netmod-nmda-diff-09

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Hi Alexey,

thank you for your review and pointing out the nits (empty lines after
HTTP headers), which are addressed in -12. 

Kind regards

--- Alex

On 7/1/2021 5:58 AM, Alexey Melnikov via Datatracker wrote:
> Reviewer: Alexey Melnikov
> Review result: Has Nits
>
> I have reviewed this document as part of the security directorate's
> ongoing effort to review all IETF documents being processed by the
> IESG. These comments were written primarily for the benefit of the
> security area directors. Document editors and WG chairs should treat these
> comments just like any other last call comments.
>
> This document defines an RPC operation to compare management
> datastores that comply with the NMDA architecture.
> The Security Considerations talks about a couple of issues specific to
> the new operation:
> 1) sensitivity of the new "compare" operation and how access control rights
> to access it should be restricted.
> 2) performance considerations of running "compare" and
> how it can lead to Denial-of-Service, if the number of requests allowed
> in any given time interval is not restricted.
> I can't think of other security issues raised by this document that are
> missing from it.
>
> Nits:
>
> In Section 6:
>
>>   The same request in RESTCONF (using JSON format):
>>
>>   POST /restconf/operations/ietf-nmda-compare:compare HTTP/1.1
>>   Host: example.com
>>   Content-Type: application/yang-data+json
>>   Accept: application/yang-d
> Please insert an empty line after the HTTP request header and before the
> following payload, or your example is not syntactically valid.
>
> Also, I don't "application/yang-d" in the list of registered media types on
> <https://www.iana.org/assignments/media-types/media-types.xhtml>. Did I miss it?
>
>>   { "ietf-nmda-compare:input" {
>>      "source" : "ietf-datastores:operational",
>>      "target" : "ietf-datastores:intended",
>>      "report-origin" : null,
>>      "xpath-filter" : "/ietf-interfaces:interfaces"
>>      }
>>   }
>>
>>   The same response in RESTCONF (using JSON format):
>>
>>  HTTP/1.1 200 OK
>>  Date: Thu, 26 Jan 2019 20:56:30 GMT
>>  Server: example-server
>>  Content-Type: application/yang-d
> Similar to the above, you need an empty line inserted here.
>
>>  { "ietf-nmda-compare:output" : {
>>      "differences" : {
>>        "ietf-yang-patch:yang-patch" : {
>>          "patch-id" : "interface status",
>>          "comment" : "diff between intended (source) and operational",
>>          "edit" : [
>>            {
>>              "edit-id" : "1",
>>              "operation" : "replace",
>>              "target" : "/ietf-interfaces:interface=eth0/enabled",
>>              "value" : {
>>                 "ietf-interfaces:interface/enabled" : "false"
>>              },
>>              "source-value" : {
>>                 "ietf-interfaces:interface/enabled" : "true",
>>                 "@ietf-interfaces:interface/enabled" : {
>>                   "ietf-origin:origin" : "ietf-origin:learned"
>>                 }
>>               }
>>            },
>>            {
>>              "edit-id" : "2",
>>              "operation" : "create",
>>              "target" : "/ietf-interfaces:interface=eth0/description",
>>              "value" : {
>>                 "ietf-interface:interface/description" : "ip interface"
>>              }
>>            }
>>          ]
>>        }
>>      }
>>    }
>>  }
> Best Regards,
> Alexey
>
>
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> netmod@xxxxxxxx
> https://www.ietf.org/mailman/listinfo/netmod

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