The IAO/NSO will ensure IPv6 6bone address space is blocked on the ingress and egress filter, (3FFE::/16).

From Perimeter Router Security Technical Implementation Guide Juniper

SV-20167r1_rule The IAO/NSO will ensure IPv6 6bone address space is blocked on the ingress and egress filter, (3FFE::/16).

Vulnerability discussion

The decommissioned 6bone allocation (3FFE::/16), RFC 3701 must be blocked. It is no longer a trusted source.

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Note: This is an example of the Ingress Filter. An Egress Filter is also required. [edit interfaces] fe-2/0/10 { description "to NIPRNet core router"; speed 100m; link-mode full-duplex; unit 0 { family inet6 { filter { input ingress-filter; } address 2001:db8:60::f14b:65a1/64; } } } [edit firewall] family inet6 { filter ingress-filter { term term-1 { from { address { 3FFE::/16; } } then discard; } }

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The administrator will configure the router ACLs to restrict IP addresses that contain any 6bone addresses.

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