Network misconfigurations

AWS EC2 instance allows public ingress access on MSSQL Monitor port 1434

Risk Level

Hazardous (3)

Compliance Frameworks


MSSQL port - 1434 is used by SQL server to listen for requests from SQL server clients. Allowing inbound traffic from all external IP addresses to MSSQL port is vulnerable to DoS, Buffer Overflow, SQL Injection attacks. It is a best practice to block public access, and restrict access from specific IP addresses to port 1434.
  • Recommended Mitigation

    It is recommended to replace the source IP of the rule with a specific IP address or delete the rule.