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Aug 31, 2020 · Databases

How to Restrict IP Access to Oracle Database Using sqlnet.ora, Hosts Files, and iptables

This guide explains three practical methods—modifying sqlnet.ora, configuring /etc/hosts.deny and /etc/hosts.allow, and applying iptables rules—to allow only specific IP addresses or subnets to connect to an Oracle 11g database and its SSH service on a CentOS server.