Disable ICMP ping replies (stealth mode) with sysconfig. 09 Monday Dec 2013 Posted by Nyk in Uncategorized ≈ Leave a comment Tagsicmp, security, sysconfig Edit /etc/sysctl.conf and add: net.ipv4.icmp_echo_ignore_all = 1 Enable the setting with: sysctl -p Check the setting with: cat /proc/sys/net/ipv4/icmp_echo_ignore_all Share this:TwitterFacebookLike Loading... Related