On Sat, 2005-03-19 at 09:12 -0800, Baker Fred wrote: >We're wandering a bit far afield from the original thread, so I changed >the thread subject. > >Here's another one. Viruses today scan one's address book and do >interesting things. Imagine a virus that scans the SMTP headers on your >incoming mail and learns the names (which will translate to a current >address) and the address (the one that was in use at the time of the >transmission) of the MUAs and MTAs en route? > >If a virus can find one host on a remote LAN and infect it, that host >can do a link-local ping to all-hosts. Or use Samba to find out all the hosts in that domain and all the domains and thus all the hosts in a company, worldwide... And of course many many many many other methods. IP (both IPv4 and IPv6) are about addressing and making computers (and other things :) able to talk to each other end-to-end. IP is *not* about making computers *not* talk to each other. That this indeed has the side effect that some malicious operations are also able to talk, too bad -> use a firewall *and* configure that one correctly, oh and of course don't forget to keep your OS + software up to date ;) Greets, Jeroen
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