What service uses port 27017?

Port 27017 is commonly designated for MongoDB over the TCP protocol.

Is port 27017 considered high risk?

Port 27017 has a risk rating of Critical. Exposing database or remote shell management ports directly to the internet is a critical security risk.

Port Intelligence Profile

Analyze default service protocols, historical security vulnerabilities, hardening methods, and firewall rules for port 27017.

Default Service

MongoDB

Protocol

TCP

Risk Level

Critical

Port Range

System (1-1023)

Port 27017 is registered for MongoDB network communication.

Exposing port 27017 publicly increases attack surface. Ensure proper firewall filters and authentication checks are enforced.

Restrict access to port using local firewall rules.

Disable standard passwords; use cryptographic authentication if supported.

Use the following system configurations to restrict open port exposure on Linux hosts:

# UFW: Deny public access to port 27017 ufw deny 27017/tcp

Ports often operate in clusters. When analyzing a service on Port 27017, security engineers typically check the status of these related ports.