90
DNSIX Security
Low RiskTCP/UDP — Security & VPN
Port Overview
Port Number
90
Service Name
DNSIX Security
Transport Protocol
TCP/UDP
Category
Security & VPN
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 90?
Port 90 was originally assigned to DNSIX (Defense Intelligence Agency Network Security for Information Exchange), a U.S. DoD security protocol for labeling network traffic with sensitivity markings.
TCP/UDP
Security & VPN
Security Considerations
Port 90 (DNSIX Security) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.
Recommendation: Standard security practices apply. Keep software updated and monitor access.