ping diable
 

hi all

how i can i make my box , not to respond to any kind of ping requests ..
will it make my machine any stronger to dos attacks.

#is it possible to to tune the box, so that an attacker can never know
whether the box is online or not ?

i have a permanent ip:

TIA

echo 1 > /proc/sys/net/ipv4/icmp_ignore_echo_requests

Add this line to /etc/rc.local so it gets run at startup (otherwise you'll lost it at each reboot). I doubt it makes much difference to dos attacks , but it does make it more difficult for someone to find you on a casual scan.

thx for you reply

how abt tcp ping requests ...
which port scanners like nmap have ...

TIA