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Questions, tips, system compromises, firewalls, etc. are all included here.
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You can easily tell each Linux machine not to respond ping thanks to /proc/sys/net/ipv4/icmp_echo_ignore_all file. To disable response, do:
Code:
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all
Note that there are a lot of interesting files in this directory. Only one problem, to know what they do... But this document may help you to understand more things about these files.
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Security setting, RedHat 9
