860
iSCSI
Critical RiskTCP — File Transfer
Port Overview
Port Number
860
Service Name
iSCSI
Transport Protocol
TCP
Category
File Transfer
Security Risk
Critical
Port Range
Well-Known (0-1023)
What is Port 860?
Internet Small Computer System Interface (iSCSI), defined in RFC 7143, encapsulates SCSI storage commands over TCP/IP for block-level storage access. Widely deployed in enterprise data centers. Exposure on public networks allows unauthenticated storage access.
TCP
File Transfer
Commonly Used
Security Considerations
Port 860 (iSCSI) 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.