Bug#463011: different netcat versions, way to passively eavesdrop

[Timo Lindfors <timo.lindfors@iki.fi>]

Hi,

I guess there are different netcat versions around. "nc -l -p 6010 -v
-v" definitely works here and "man netcat" says

"nc -l -p port [-options] [hostname] [port]"

I also now realized that if Malice forwards the data to the ipv6 port
she can completely passively eavesdrop everything alice does. This can be
done with something like

strace -f -o strace.out -s 4096 socat TCP-LISTEN:6010,fork,reuseaddr TCP6:ip6-localhost:6010

and looking at strace.out (I'm sure there's some easier way to log
traffic with socat but couldn't find it yet).

best regards,
Timo Lindfors