Sunday, June 28, 2009

Ah.

So, evidently even if you have a host that is listening on 0.0.0.0:12345 (e.g. "nc -l 12345") and inject packets onto an active interface, pointed at that interface's IP address (e.g. "en1" has IP 172.16.0.10) -- any normally-generated packets to/from a local IP address go over "lo0".

That would have been good to know, what, a few hours ago?


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