1099
RMI Registry
High RiskTCP — System & Infrastructure
Port Overview
Port Number
1099
Service Name
RMI Registry
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
High
Port Range
Registered (1024-49151)
What is Port 1099?
Port 1099 is the default port for Java Remote Method Invocation (RMI) Registry. Java applications use RMI to invoke methods on objects running in another JVM, often across a network. Exposed RMI registries are a known attack vector for remote code execution.
TCP
System & Infrastructure
Commonly Used
Security Considerations
Port 1099 (RMI Registry) 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.