Should port 1500 be open on my firewall?

Port 1500 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 1500 use?

Port 1500 (VLSI License Manager) uses the TCP transport protocol and falls under the System & Infrastructure category.

:1500 (TCP)

VLSI License Manager

Q: Is port 1500 (VLSI License Manager) dangerous?

Port 1500 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Low Risk

TCP — System & Infrastructure

Port Overview

Port Number 1500

Service Name VLSI License Manager

Transport Protocol TCP

Category System & Infrastructure

Security Risk Low

Port Range Registered (1024-49151)

What is Port 1500?

Port 1500 is associated with FlexLM and VLSI Technology license managers used for EDA (Electronic Design Automation) software licensing. It is also used by some IBM products for license management. Engineering organizations running licensed CAD/EDA tools commonly encounter this port.

TCP System & Infrastructure

Security Considerations

Port 1500 (VLSI License Manager) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.

Recommendation: Standard security practices apply. Keep software updated and monitor access.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN