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Port 18104RAD PDF Service

RAD PDF Service is a server component for the RAD PDF library, allowing web applications to display, edit, and manage PDF documents directly in the browser without the need for third-party PDF viewers. It acts as a backend service that handles PDF file rendering, annotation, and secure distribution, supporting integration with various web technologies. This service enables rich PDF interaction capabilities within enterprise web solutions, streamlining workflow and document management..

inWeb ServicesFile Transfer
transport
tcp

single transport

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
4/10

caution

lookups
7,062

rank 724 of 993 · top 73%

Technical Details

what runs on :18104

Overview:

RAD PDF Service facilitates server-side processing and real-time interaction with PDF files. Typically, it is integrated into web server environments like IIS, where it handles complex PDF operations — such as rendering pages, managing annotations, merging, and form processing — then communicates results to the client browser. It supports AJAX-enabled interfaces and seamlessly integrates into enterprise web applications.

Architecture:

The service listens on port 18104 for HTTP(S) communication, usually invoked by embedded PDF viewers or editing controls in web pages. It manages PDF data persistence, session handling, file locking, and version control, ensuring consistency and reliability. The service is optimized for dynamic scaling in multi-user environments, handling concurrent requests effectively.

Deployment:

RAD PDF Service is deployed on-premises or in private cloud environments, often behind corporate firewalls. Installation involves configuring web server bindings, authentication methods, and access controls. It supports customization to align with internal security policies and enterprise workflows.

Security Information

exposure of :18104

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

web services averages 3.9 across 112 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:

  • Unauthorized access: Misconfigured access controls may permit unauthorized users to access or modify sensitive PDF documents.
  • Injection attacks: Improper sanitization can expose the service to command injection or malicious file uploads.
  • Information leakage: Debugging or verbose error messages might reveal sensitive internal architecture or file paths.
  • Man-in-the-middle (MITM) attacks: If deployed without encryption, data transmitted can be intercepted and altered.

Mitigations:

  • Access control: Enforce strong authentication and role-based access on the service endpoints.
  • Encryption: Use HTTPS for transport security to prevent eavesdropping and tampering.
  • Input validation: Sanitize all user input to prevent injection vulnerabilities.
  • Update management: Maintain regular updates with the latest security patches from the vendor.
  • Logging and monitoring: Enable detailed logging and proactive monitoring for anomalous activities.

Related Ports

all 112 in web services →

the 8 most looked-up other ports in web services — 112 ports carry that label.

portservicerisk
:8888Sun Answerbook & Alt HTTPcaution
:8000Intel Remote Desktop / Alternate HTTP Portsafe
:8888NewsEDGEcaution
:8888HTTP Alternative Portcaution
:8888GNUmp3d Streaming HTTPcaution
:9080Groove RPCcaution
:8881Atlasz Secure Servercaution
:80HTTPcaution

risk mix of the 8 listed

  • safe13%
  • caution88%

0 of 8 encrypted