[OPSEC] [Errata Verified] RFC6192 (4705)

RFC Errata System <rfc-editor@rfc-editor.org> Mon, 19 December 2016 10:46 UTC

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To: trond.endrestol@ximalas.info, dave@juniper.net, cpignata@cisco.com, rodunn@cisco.com
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Subject: [OPSEC] [Errata Verified] RFC6192 (4705)
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The following errata report has been verified for RFC6192,
"Protecting the Router Control Plane". 

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=6192&eid=4705

--------------------------------------
Status: Verified
Type: Technical

Reported by: Trond Endrestøl <trond.endrestol@ximalas.info>
Date Reported: 2016-06-07
Verified by: Benoit Claise (IESG)

Section: A.1

Original Text
-------------
   ipv6 access-list EBGPv6
    permit tcp host 2001:DB8:100::25 eq bgp any
    permit tcp host 2001:DB8:100::25 any eq bgp
    permit tcp host 2001:DB8:100::27 eq bgp any
    permit tcp host 2001:DB8:100::27 any eq bgp
    permit tcp host 2001:DB8:100::29 eq bgp any
    permit tcp host 2001:DB8:100::29 any eq bgp
    permit tcp host 2001:DB8:100::31 eq bgp any
    permit tcp host 2001:DB8:100::31 any eq bgp
   ip access-list extended DNS
    permit udp 198.51.100.0 0.0.0.252 eq domain any
   ipv6 access-list DNSv6
    permit udp 2001:DB8:100:1::/64 eq domain any
    permit tcp 2001:DB8:100:1::/64 eq domain any
   ip access-list extended NTP

Corrected Text
--------------
   ipv6 access-list EBGPv6
    permit tcp host 2001:DB8:100::25 eq bgp any
    permit tcp host 2001:DB8:100::25 any eq bgp
    permit tcp host 2001:DB8:100::27 eq bgp any
    permit tcp host 2001:DB8:100::27 any eq bgp
    permit tcp host 2001:DB8:100::29 eq bgp any
    permit tcp host 2001:DB8:100::29 any eq bgp
    permit tcp host 2001:DB8:100::31 eq bgp any
    permit tcp host 2001:DB8:100::31 any eq bgp
   ip access-list extended DNS
    permit udp 198.51.100.0 0.0.0.252 eq domain any
    permit tcp 198.51.100.0 0.0.0.252 eq domain any
   ipv6 access-list DNSv6
    permit udp 2001:DB8:100:1::/64 eq domain any
    permit tcp 2001:DB8:100:1::/64 eq domain any
   ip access-list extended NTP

Notes
-----
DNS is transported sometimes over UDP and sometimes over TCP. The Cisco example fails to demonstrate this behaviour in the case of IPv4. The Cisco example clearly shows this behaviour in the case of IPv6.

The Juniper example in Section A.2 should be amended in the same fashion, however I'm unfamiliar with the proper JunOS syntax.

--------------------------------------
RFC6192 (draft-ietf-opsec-protect-control-plane-06)
--------------------------------------
Title               : Protecting the Router Control Plane
Publication Date    : March 2011
Author(s)           : D. Dugal, C. Pignataro, R. Dunn
Category            : INFORMATIONAL
Source              : Operational Security Capabilities for IP Network Infrastructure
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG