nixCraft

Hello to all, Please, how to block ICMP with Endian firewall?, try with command iptables that I found in this forum, but did not work.
Thank you very much for your help!

What is Endian firewall? If this a Linux distro, you should able to use iptables what error do you see?

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May the force with you!

Big Endian is how bytes are read and moved by a system, or which bit is first. For the number 1000, the 1 is first to be moved, then each zero. Little endian starts with the 0 in the ones place to the 1.

TCP/IP typically uses Big Endian style, and it might even be a part of the design of it. What little I know of basic TCP/IP protocols all use Big Endian. So your right monk with iptables.

iptables can list rules for ICMP with
#iptables -A INPUT -p icmp -j DROP


This might be better since the above one kills all icmp if I remember correctly.
#iptables -A INPUT -p icmp --icmp-type echo-request -j DROP
Theoretically, this is enough, but it might be best to deny replies out.
#iptables -A OUTPUT -p icmp --icmp-type echo-reply -j DROP

Hi All,

i do not know about Big Endian Firewall.But if your intention is to block

icmp request for all, then u can use iptables. [or] u can do some changes in /proc filesystem.

#cd /proc/sys/net/ipv4
#echo 1 > icmp_echo_ignore_all ( to block icmp request to all)
#echo 0 > icmp_echo_ignore_all (to allow icmp request to all)

thanks,

aaru

Thank you to all,
I applied your sentences and i blocked ping ...