4505
SaltStack Publisher
Critical RiskTCP — System & Infrastructure
Port Overview
Port Number
4505
Service Name
SaltStack Publisher
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
Critical
Port Range
Registered (1024-49151)
What is Port 4505?
Port 4505 is used by SaltStack (Salt) configuration management system for the publisher channel, through which the Salt master pushes commands to all minions. Salt minions subscribe to this port to receive configuration instructions and orchestration commands. Exposure of this port allows attackers to send arbitrary commands to all managed servers.
TCP
System & Infrastructure
Security Considerations
Port 4505 (SaltStack Publisher) is classified as critical risk. This port should not be exposed to the public internet. The service transmits data without encryption, making it vulnerable to eavesdropping, credential theft, and man-in-the-middle attacks.
Recommendation: Block this port at the firewall. Use encrypted alternatives (SSH, SFTP, HTTPS) instead.