SSH service publicly accessible

Classification:

attack

Tactic:

Technique:

이 페이지는 아직 한국어로 제공되지 않으며 번역 작업 중입니다. 번역에 관한 질문이나 의견이 있으시면 언제든지 저희에게 연락해 주십시오.

Goal

Detect when multiple external connections are made to the port for SSH (22).

Production hosts should not be publicly-accessible via SSH. Incoming connections from multiple public IP addresses indicate an exposed instance.

Review all events for connections from unexpected IP addresses.
Move the sshd service to a private network. If you must expose the host through SSH, restrict access with a security group.
Review login events and related signals for malicious activity.

This detection is based on data from Network Performance Monitoring.