Fellow handler Lorna tossed me an article written by Symantec analysing the security in Microsoft's upcoming windows release called "Vista".

In the article Tim Newsham and Jim Hoagland, look at the new Vista from a network perspective.

It's interesting to note that Vista supports IPv6 and will be try to build tunnels exposing its interfaces even if you have a IPv4 firewall and/or NAT unless you make sure those IPv6 tunnels cannot get out. (It's IPv6 tunneled in a IPv4 udp stream that can traverse NAT [Teredo] ). So beware of outgoing udp traffic!

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Swa Frantzen -- Section 66