how to prevent from the packages of ping?

i have set the rule of ping(ICMP) to prevent anyothers from pinging my computer.
but i found that this rule is fail.they still can ping me .
how to set the internet filtering rules?

 

Hi awisc

There is no rule to prevent other computer to ping yours...
You have no control on their computers, right?

The only needed rules for ICMP on Internet are:

a rule to allow your PC to ping:
ICMP type 8 code 0 : echo request
outgoing only

a rule to received the answer of the previous "ping"
ICMP type 0 code 0 : echo reply
incoming only

a rule for the "timeout" used by trace route
ICMP type 11 code 0: time to live expired
incoming only

all the other ICMP type/code must be blocked in and out.

The other PCs may "ping" your PC a million time, the pings are blocked with no answer from you...

This keep your PC "stealth" at the level of the ICMP.

 

Maybe you have a router, and your router is answering pings directly without having the PC (and Look 'n' Stop) involved at all.

Frederic

 

thanks to Climenole and Frederic.