Common Issues

Subnetting and IP Address Management

• Subnet Overlaps: Accidental overlap of IP ranges between subnets can cause connectivity issues or unexpected routing behavior.
• IP Address Exhaustion: Poorly planned IP address allocation can lead to running out of available IP addresses within a subnet.

Security Configuration

• Inadequate Security Group Rules: Misconfigured security groups can lead to unintended exposure of resources or overly restrictive access, impacting application functionality.
• Network Access Control Lists (ACLs): Misconfigurations in ACL rules can block legitimate traffic or allow unauthorized access.

Connectivity Issues

Internet Connectivity

• Issue: Instances in VPC cannot access the internet.
• Resolution: Check route tables and ensure there is an Internet Gateway (IGW) attached and routes are properly configured.

Subnet Configuration

• Issue: Instances in a subnet cannot communicate with each other or other subnets.
• Resolution: Verify subnet CIDR blocks and Network Access Control Lists (ACLs) for proper configurations.

Error Messages

Route Table Misconfigurations

• Issue: Incorrect routes leading to traffic not reaching the intended destination.
• Resolution: Audit route tables for correct entries and update as necessary.

NAT Gateway/Elastic IP

• Issue: Instances in private subnets cannot initiate outbound connections to the internet.
• Resolution: Ensure NAT Gateway is properly configured in the public subnet with appropriate Elastic IP assignment.

Support

For further assistance, please contact our support team at [email protected].