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Old 03-03-2008, 01:14 PM   #1
Rock'n'Metal
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grc


i test my pc on grc.com and see my system answer to ping requests!
how can i close(block) ping requests?
 
Old 03-03-2008, 01:45 PM   #2
win32sux
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Quote:
Originally Posted by Rock'n'Metal View Post
i test my pc on grc.com and see my system answer to ping requests!
how can i close(block) ping requests?
Assuming it's not your router which is replying, one way is:
Code:
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
Another is:
Code:
iptables -I INPUT -p ICMP --icmp-type 8 -j DROP
 
Old 03-03-2008, 03:03 PM   #3
Rock'n'Metal
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ping

Quote:
Originally Posted by win32sux View Post
Assuming it's not your router which is replying, one way is:
Code:
echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
Another is:
Code:
iptables -I INPUT -p ICMP --icmp-type 8 -j DROP
i tested it answer "permission denied" but why grc said answer?
 
Old 03-03-2008, 03:05 PM   #4
win32sux
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Either of those commands will require root privileges.
 
Old 03-05-2008, 01:38 AM   #5
unSpawn
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While "stealth" sounds nice not answering to ping and traceroute requests does not necessarily a more secure system make. If you are going to invest time in beefing up security you best read a basic hardening HOWTO and start by reviewing, updating and protecting what services you're running and who you give access to before "stealthing" it.
 
  


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