make linux unseen on network

bosewicht · 06-14-2004, 06:51 PM

a friend of mine recently installed linux on an old computer at work and wants to connect it to the network. the prob is he doesn't want it to be seen as a linux box. is there a way to get around this?

Tinkster · 06-14-2004, 07:31 PM

Which means of "looking" are they using? :)

bosewicht · 06-14-2004, 07:59 PM

i'm not really certain, but when u plug into a network anyone who was looking would see a linux box, wouldn't they?? they would be Da Man, Da Big Man...

mascdman · 06-14-2004, 09:36 PM

Well, you could try something like

Code:

iptables -P INPUT DROP
iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

so that the machine can connect to other computers but doesn't respond to any inbound connections. You can add more rules to only allow connections from certain hosts, but anyone watching traffic on a router might be interested that there's traffic coming from an IP that doesn't seem to exist. Why do they need to hide the computer?

--mascdman

Tinkster · 06-14-2004, 10:11 PM

Not to mention that ARP traffic or other plain ethernet stuff would
still happen, which a half-way decent network sniffer would pick up ;)

Cheers,
Tink

mascdman · 06-14-2004, 10:28 PM

Yeah, that too

--mascdman