RFC 6192, "Protecting the Router Control Plane", March 2011

Errata ID: 4705
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Trond Endrestøl
Date Reported: 2016-06-07
Verifier Name: Benoit Claise
Date Verified: 2016-12-19

Section A.1 says:

   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

It should say:

   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.

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