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If I configure both Case 1 and Case 2 in the same Linux server, which case will take precedence over the other?

  • Case 1 – echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all
  • Case 2 – iptables rules set to accept ICMP any to any
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1 Answer 1

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Case 1 :

  • echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_all

Takes precedence over iptables rules.

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