Port 1581MIL-STD-2045-47001 VMF
MIL-STD-2045-47001 VMF (Variable Message Format) is a military data communication protocol used primarily for tactical messaging among defense systems. Leveraging efficient message formatting, it facilitates rapid, secure, and interoperable data exchange across diverse battlefield communication platforms..
- transport
- udp
- in transit
- cleartext
- assignment
- official
- risk
- 4/10
- lookups
- 10,614
single transport
payload readable on path
registered with iana
caution
rank 409 of 993 · top 41%
Technical Details
what runs on :1581-
MIL-STD-2045-47001 Variable Message Format (VMF) is a standard developed by the U.S. Department of Defense for exchanging tactical information in digital form across various military communication devices. It is optimized for reliability and efficiency in bandwidth-constrained, contested environments.
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VMF uses a compact binary message structure designed for rapid parsing and minimal overhead, supporting a wide range of message types including target data, situational awareness, fire control, and command directives. It helps ensure interoperability among equipment from different manufacturers and coalition partners.
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Port 1581 over UDP is officially assigned for VMF communications. The use of UDP aligns with the real-time, low latency requirements of tactical systems, where timely delivery often outweighs guaranteed delivery. This port helps encapsulate VMF protocols within IP networks, enabling integration with modern digital communication infrastructure.
Security Information
exposure of :1581risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
security averages 3.8 across 216 ports — this one sits 0.2 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
udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
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Common Vulnerabilities:
- VMF implementations may be susceptible to spoofing, replay, or injection attacks due to the unauthenticated nature of underlying UDP transport.
- Lack of encryption can expose sensitive tactical data to interception and eavesdropping.
- Denial-of-service (DoS) attacks exploiting UDP amplification or flooding could degrade critical military communications.
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Mitigations:
- Deploy network-level access controls to restrict VMF port access to trusted, authenticated devices.
- Use encryption methods such as IPsec tunnels or application-layer encryption to protect message confidentiality and integrity where possible.
- Incorporate message authentication codes (MACs) and timestamps to detect tampering and replay attacks.
- Implement rigorous monitoring and anomaly detection on VMF network segments to identify and respond to malicious activities promptly.
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risk mix of the 8 listed
- caution100%
3 of 8 encrypted