SUN Remote Procedure Call
SUNRPC, operating on Port 111, facilitates Remote Procedure Call (RPC) services. It allows networked computers to communicate and execute code on remote systems, making it essential for distributed computing environments. This service is commonly used in Unix-based systems.
What is SUN Remote Procedure Call
SUNRPC, or Sun Remote Procedure Call, operates on Port 111 and is a protocol used to enable remote procedure calls between networked computers. This service allows a program on one computer to execute code on a remote system, facilitating communication and resource sharing across a network. It is a fundamental component in distributed computing environments, particularly in Unix-based systems.
Developed by Sun Microsystems, SUNRPC has been widely adopted due to its efficiency and reliability in handling remote procedure calls. It is often used in conjunction with other network services such as NFS (Network File System) to provide seamless access to remote resources. The protocol's design allows for a high degree of flexibility and scalability, making it suitable for various applications ranging from simple client-server interactions to complex distributed systems.
Despite its advantages, SUNRPC also presents certain security risks. Because it allows remote execution of code, it can be a target for malicious activities if not properly secured. Ensuring that the service is correctly configured and monitored is crucial to maintaining network security. Regular updates and patches are also necessary to mitigate vulnerabilities associated with this protocol.
SUN Remote Procedure Call runs on TCP and UDP port 111 and is official IANA port.Security risk
If Port 111 is open and the SUNRPC service is running, it can be exploited by attackers to execute arbitrary code on the remote system. This poses a significant security risk, especially if the service is not properly secured or monitored. Ensuring that only authorized systems can access this port and regularly updating the service to patch vulnerabilities are essential steps to mitigate these risks.
In our UFW tutorial you can follow instructions how you can configure UFW to close port 111. Use StackChanges to monitor if the SUN Remote Procedure Call port is closed and stays closed. StackChanges will send an alert if port 111 is open again.