Ensure iptables Firewall Rules Exist for All Open Ports

Documentos > Datadog Security > OOTB Rules > Ensure iptables Firewall Rules Exist for All Open Ports

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Description

Any ports that have been opened on non-loopback addresses need firewall rules to govern traffic.

Rationale

Without a firewall rule configured for open ports default firewall policy will drop all packets to these ports.

Warning

Changing firewall settings while connected over network can result in being locked out of the system.