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Old 12-25-2004, 09:43 PM   #1
romel
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Question disable ping


How can I disable ping....I am using redhat linux 9...
 
Old 12-25-2004, 09:47 PM   #2
fsbooks
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Why do you want to do this? Or do you just not need it?
 
Old 12-25-2004, 10:01 PM   #3
zxzx123
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At a guess you could just set the permissions so that it cannot be run by anbody apart from file owner (root), log in under root, and navigate to the directory, /bin and adjust the ping file's properties.

I would be interested to know if that has the desired effect, gl!
 
Old 12-28-2004, 07:06 AM   #4
kaito
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If you want not to reply ping(echo-request), change /proc/sys/net/ipv4/icmp_echo_ignore_all; do the following command.

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

If you want to disallow ping, set proper permission to ping as zxzx123 said, or filter packets by using iptables; a example rule is following

iptables -a OUTPUT -j DROP -p icmp --icmp-type 8


im glad my advice to your help
 
Old 12-28-2004, 09:15 AM   #5
whipermr5
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You can
Code:
mv /bin/ping /bin/ping.old
If you ever want ping again, you can type ping.old, or reverse the operation above.
 
Old 12-31-2004, 12:50 AM   #6
romel
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I have tried

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

but it is not working......I have restarted my pc....but not working...

thanks....

Quote:
Originally posted by kaito
If you want not to reply ping(echo-request), change /proc/sys/net/ipv4/icmp_echo_ignore_all; do the following command.

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

If you want to disallow ping, set proper permission to ping as zxzx123 said, or filter packets by using iptables; a example rule is following

iptables -a OUTPUT -j DROP -p icmp --icmp-type 8


im glad my advice to your help
 
Old 12-31-2004, 12:41 PM   #7
kaito
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Quote:
Originally posted by romel
I have tried

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

but it is not working......I have restarted my pc....but not working...

thanks....
Could u tell me what is not working, romel? Replying to ping from another host, or Can ping command on the setting host? If the solution i said is set, you can do ping command on the host. This setting is only not to reply to ping from another host.

Tell us your situation detail
 
Old 01-01-2005, 12:22 PM   #8
nikonos
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The best is use iptables rule. You can allow ping from some IP ...

example:

iptables -a INPUT -p icmp -s 212.18.49.194 -j ACCEPT
iptables -a INPUT -p icmp -j DROP

iptables -a OUTPUT -p icmp -j DROP

Regards,

Miha
 
  


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