19
CHARGEN
High RiskTCP/UDP — System & Infrastructure
Port Overview
Port Number
19
Service Name
CHARGEN
Transport Protocol
TCP/UDP
Category
System & Infrastructure
Security Risk
High
Port Range
Well-Known (0-1023)
What is Port 19?
Character Generator protocol. Continuously sends a stream of characters to the client. Used for network testing but is a known vector for amplification DDoS attacks.
TCP/UDP
System & Infrastructure
Commonly Used
Security Considerations
Port 19 (CHARGEN) is classified as high risk. This port is a common target for automated scanning and brute-force attacks. If you must expose it, restrict access to known IP addresses.
Recommendation: Use firewall rules to whitelist trusted IPs. Enable rate limiting and intrusion detection.