Table of Contents

• Security Rules for the DB System
• General Rules Required for Basic Connectivity
• General Ingress Rule 1: Allows SSH Traffic From Anywhere
• General Ingress Rule 2: Allows Path MTU Discovery Fragmentation Messages
• General Ingress Rule 3: Allows Connectivity Error Messages Within the VCN
• General Egress Rule 1: Allows All Egress Traffic
• Custom Security Rules
• Custom Ingress Rule 1: Allows ONS and FAN Traffic From Within the VCN
• Custom Ingress Rule 2: Allows SQL*NET Traffic From Within the VCN
• Custom Egress Rule 1: Allows Outbound SSH Access
• Custom Egress Rule 2: Allows Access To Oracle Services Network
• Ways to Implement the Security Rules
• Use Network Security Groups
• Use Security Lists