:105
(TCP)
Low Risk
CCSO Nameserver
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TCP — Other
Port Overview
Port Number
105
Service Name
CCSO Nameserver
Transport Protocol
TCP
Category
Other
Security Risk
Low
Port Range
Well-Known (0-1023)
What is Port 105?
The CCSO Nameserver (also called qi or ph) was a directory service developed at the University of Illinois at Urbana-Champaign. CCSO has been replaced by LDAP (port 389) and is now obsolete.
TCP
Other
Security Considerations
Port 105 (CCSO Nameserver) 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.