Disable ping on RedHat 9 DNS box

lindab_tsp · 07-21-2003, 05:10 AM

How do you disable ping on RedHat 9 DNS box?

Thanks,
L.

jarod · 07-21-2003, 05:28 AM

If you don't want the box to respond to ping from others:
/bin/echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
/bin/echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
I hope i got this right

DrOzz · 07-21-2003, 05:32 AM

i just put this in iptables:

#Deny Pinging
iptables -INPUT -p icmp -j REJECT

ppuru · 07-21-2003, 06:45 AM

or in /etc/sysctl.conf

net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_echo_ignore_all = 1

and do a sysctl -p

phoeniXflame · 07-21-2003, 08:14 AM

Quote:

Originally posted by DrOzz
i just put this in iptables:

#Deny Pinging
iptables -INPUT -p icmp -j REJECT

a better (correct) line would be ...

Code:

itpables -A INPUT -p icmp --icmp-type echo-request -j DROP