110
POP3
Medium RiskTCP — Email
Port Overview
Port Number
110
Service Name
POP3
Transport Protocol
TCP
Category
Email
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 110?
Post Office Protocol v3. Retrieves email from a mail server, typically downloading messages to the client and removing them from the server. Sends credentials in plaintext.
TCP
Email
Commonly Used
Security Considerations
Port 110 (POP3) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.