Port 530RPC
Remote Procedure Call (RPC) enables one program to request a service from a program located on another computer in a network. It abstracts the communication process, making it easier to build distributed, client-server applications because the calling method appears as if it's local despite being remote..
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- official
- risk
- 4/10
- lookups
- 8,769
2 transports registered
payload readable on path
registered with iana
caution
rank 575 of 993 · top 58%
Technical Details
what runs on :530Remote Procedure Call (RPC) is a powerful protocol that allows a program to execute procedures on a remote server as if they were local calls. It abstracts the intricacies of network communication and serialization, simplifying the development of networked applications. RPC frameworks handle data marshaling, transmission, and response retrieval transparently to the developer.
RPC operates over multiple transport protocols, most notably TCP and UDP, balancing reliable delivery with latency considerations. It traditionally uses port 530, though newer implementations may use dynamic ports or other mechanisms. RPC supports various data encodings and can be implemented in diverse environments, including UNIX and Windows systems.
Because it’s so versatile, RPC forms the backbone of many distributed architectures. Technologies such as DCOM, ONC RPC, and the Windows RPC system rely on these concepts. Newer frameworks like gRPC build upon this philosophy, enhancing cross-platform communication while often leveraging encryption and modern serialization methods.
Security Information
exposure of :530risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
network services averages 3.9 across 604 ports — this one sits 0.1 above.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
official
registered with iana for this service — scanners fingerprint it by number
reachable over
tcp · udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
Common vulnerabilities associated with RPC include:
- Exposure of sensitive methods that can be invoked by unauthorized parties
- De-synchronization attacks via packet manipulation
- Buffer overflows in RPC services leading to remote code execution
- Lack of transport security leading to eavesdropping and man-in-the-middle attacks
Mitigation strategies include:
- Employing strict authentication and authorization mechanisms
- Implementing network segmentation and firewall rules to limit RPC port exposure
- Keeping RPC services and operating systems updated with the latest security patches
- Utilizing encrypted channels (such as IPsec or TLS-wrapped RPC implementations) to protect data in transit
Related Ports
the 8 most looked-up other ports in network services — 604 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :9080 | Groove RPC | TCPUDP | Web Services | caution | 70.8k |
| :6543 | Jetnet | UDP | Network Services | caution | 65.3k |
| :5938 | TeamViewer | TCPUDP | Remote Access | caution | 65.0k |
| :8291 | Winbox MikroTik Admin | TCP | Security | caution | 62.9k |
| :3233 | WhiskerControl Protocol | TCPUDP | Network Services | caution | 61.9k |
| :3268 | Microsoft Global Catalog (GC) | TCPUDP | Security | caution | 54.6k |
| :135 | Microsoft EPMAP | TCPUDP | Security | caution | 51.9k |
| :3128 | Tatsoft Default HTTP Proxy | TCP | Web Services | caution | 46.8k |
risk mix of the 8 listed
- caution100%
0 of 8 encrypted