[ipv6hackers] the end is near (or for IPv6: the beginning)

Edward Lopez elopez at fortinet.com
Wed Jan 15 19:35:24 CET 2014

This is my personal opinion and not necessarily one shared with my company.

IPv4 stateful firewalls have a heavy reliance on NAT functionality as a means of resolving asymmetric routing issues that would otherwise be problematic in otherwise multipath routing environments.  Proxy devices resolve asymmetry as a natural result of explicit proxy functions.  As IPv6 migration accelerates, and the adoption of native IPv6 addressing down to endpoints becomes predominant, we will begin to see interesting issues arise:

- A sharp rise in asymmetry issues with stateful firewalls in multipath environments
- An increase in direct attacks against IPv6 endpoints, due to the removal of the NAT boundary
- A strong effort to deploy NAT66 (RFC 6296) for use in FW/CGN boundaries
- A resurgence of proxy-based security
- The need to resolve asymmetry will be is exacerbated by the deployment of IPv6 anycast services

With the recent allegations that the NSA TAO has compromised a number of commercial stateful firewall systems, I would think that more intelligent organizations will be reconsidering their network security strategies in their migration plans to IPv6


On Jan 4, 2014, at 12:29 PM, Jens Link <lists at quux.de<mailto:lists at quux.de>> wrote:

Marc Heuse <mh at mh-sec.de<mailto:mh at mh-sec.de>> writes:

Expect everyone in the USA to be totally surprised when this happens
(like every year in Chicago in Winter when it starts snowing)  ;-)

Or Windows XP support running out. ;-)

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