Port 902IdeaFarm Door
Port 902 is officially assigned to IdeaFarm Door, a self-documenting service where sending a single byte (0x00) prompts an informational response. This mechanism allows clients to quickly understand the service's capabilities. The port is primarily used over TCP, and it is part of legacy systems with niche deployment, seldom encountered in mainstream environments today..
- transport
- tcp
- in transit
- cleartext
- assignment
- official
- risk
- 4/10
- lookups
- 30,783
single transport
payload readable on path
registered with iana
caution
rank 36 of 993 · top 4%
3 other services are registered on port 902. compare all 4 →
Technical Details
what runs on :902Port 902 is officially registered for IdeaFarm Door, a unique and somewhat experimental communication protocol. The defining feature of this service is its self-documenting nature— sending the null byte (0x00) triggers a built-in help or information response from the server. This facilitates initial client discovery, simplifying integration efforts without needing extensive external documentation.
In typical operation, IdeaFarm Door relies on a TCP connection. A client connects, sends a solitary null byte, and receives a brief informational reply about the server's capabilities or instructions for further communication. This design allows both humans and automated tools to quickly learn about the service's interface in a lightweight manner.
Despite its innovative concept, IdeaFarm Door has not seen widespread adoption. Its presence today is mostly limited to legacy or niche deployments, as standardized protocols with well-documented specifications have largely taken precedence. Understanding the port's behavior and recognizing traffic on it can help identify legacy or custom-developed services in an environment.
Security Information
exposure of :902risk 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
every listening transport is another surface to filter at the edge
security overview
Common Vulnerabilities:
- Lack of encryption makes data exchanges on port 902 visible to network interceptors.
- Legacy implementations could contain unpatched buffer overflows or input validation flaws.
- Misconfigured services might inadvertently disclose sensitive system information when responding to initial probes.
Common Mitigations:
- Restrict access with firewall rules to trusted IP ranges only.
- Use network segmentation to isolate any legacy services.
- Monitor for unexpected external access attempts or scans.
- Replace or disable the service when possible to reduce overall attack surface.
- Audit responses to ensure no sensitive or excessive information is disclosed during the initial handshake.
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