How to disable ping request in CentOS Server.
To secure the Server we need to follow some of the protocols like
# To keep updated the Server with latest patches.
# To keep all the default ports bl0cked and use customized ports for the applications installed in the Server.
# Not to share the Server credential in one mail or any communication applications, better to separate login details and password while sending in the mail.
# Also to enable Firewall and allow customized ports to access.
# To disable ping request in Server.
So will let the commands to run to disable ping request in CentOS server.
I have tried in CentOS 6.10 version.
Steps to disable ping request in CentOS Server
#sudo nano /etc/sysctl.conf
Add below line at the end of the file
#net.ipv4.icmp_echo_ignore_all = 1
#sudo sysctl -p
and if you ping the server you won’t b able to get any response from the server.
Steps to enable ping request in CentOS Server
#sudo nano /etc/sysctl.conf
Add below line at the end of the file
#net.ipv4.icmp_echo_ignore_all = 0
#sudo sysctl -p
Now you will get reply response from Server.
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