RFC Errata
RFC 6192, "Protecting the Router Control Plane", March 2011
Source of RFC: opsec (ops)See Also: RFC 6192 w/ inline errata
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.