[oclug] Stealth

[GR Gaudreau]

Hi all,
Someone on alt.os.linux.mandrake sent a post in claiming you can make
your computer invisible (stealth) to the Internet by issuing this simple
command as root:

/sbin/iptables -A INPUT -p tcp --syn -j DROP

Is this true and would it be a good thing for me to do, even though I'm
connected through a router with a built-in firewall?

What does that input line mean, other than the obvious calling of
iptables?

-- 
GR Gaudreau
<http://www.geocities.com/revgaud/>
"Half the lies they told me aren't true!"
~ Yogi Berra