Should port 15 be open on my firewall?

Port 15 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 15 use?

Port 15 (NetStat) uses the TCP transport protocol and falls under the System & Infrastructure category.

:15 (TCP)

NetStat

Q: Is port 15 (NetStat) dangerous?

Port 15 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 15

Service Name NetStat

Transport Protocol TCP

Category System & Infrastructure

Security Risk Low

Port Range Well-Known (0-1023)

What is Port 15?

An early ARPANET protocol used to query network status information from a remote host. It predates modern network management protocols and was used in the original ARPANET era to retrieve connection tables. It is obsolete and no longer used in any modern system, though scanners may still probe it.

TCP System & Infrastructure

Security Considerations

Port 15 (NetStat) 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