From 90f533a1f3d718ff9d6fb0c862cf284e0c856065 Mon Sep 17 00:00:00 2001
From: fossilfranv <aa@aa.ca>
Date: Tue, 21 Mar 2023 20:21:25 +0100
Subject: [PATCH] Update 'README.md'

---
 README.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 3c05483..0adbbce 100644
--- a/README.md
+++ b/README.md
@@ -18,4 +18,9 @@ test connection: ansible -m ping --ask-vault-pass --extra-vars '@passwd.yml' TAR
 
 run playbook: ansible-playbook --ask-vault-pass --extra-vars '@passwd.yml' setup-pb.yml -l TARGET_IP OR NAME -u root
 
-Reference: https://www.vultr.com/docs/how-to-configure-a-new-ubuntu-server-with-ansible/
\ No newline at end of file
+Reference: https://www.vultr.com/docs/how-to-configure-a-new-ubuntu-server-with-ansible/
+
+modify /etc/sysctl.conf, add the line:
+net.ipv4.icmp_echo_ignore_all = 1  #don't respond to pings
+
+and then: sudo sysctl -p