17 Dec
2003
17 Dec
'03
11:17 p.m.
Eric Hughes says:
Another way to mask this is to give the remailer its own IP address. It's easy to recompile extra slip interfaces into a kernel; each gets its own IP address. Routing the output of the remailer through these extra interfaces can require some hackery, though. I only know about this second hand, but evidently the BSDI 1.1 release added some BSD 4.4 feature that makes this kind of IP hack much easier.
In 4.4 kernels, you just configure an alias address. For, say, SunOS 4.1.X, John Ioannidis released a virtual interface driver; I saw the thing posted to the net recently so I suppose its public now (though I'm not sure J.I. knew that was going to happen.) Its not hard to set such things up; no real trickery needed. Perry