Port 6801ACNET Control System Protocol

ACNET carries control-system communications for Fermilab accelerator operations over TCP or UDP.

transport: tcp · udp
in transit: cleartext
assignment: official
risk: 7/10
lookups: 0

Technical Details

what runs on :6801

IANA assigns TCP and UDP port 6801 to the ACNET Control System Protocol. ACNET is Fermilab-specific and supports communications for accelerator monitoring and control; it is not a general-purpose web or file-transfer service. The assignment does not specify a handshake, message framing, or application defaults, so those details should not be inferred from the port number alone.

Security Information

exposure of :6801

risk score

7/ 10risk

treat as sensitive. widely scanned and regularly exploited when reachable — restrict it to known sources.

network services averages 2.6 across 1,748 ports — this one sits 4.4 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 · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

Treat an ACNET listener as part of sensitive operational technology: access could expose accelerator-system information or provide a path to control functions, depending on the deployment and its authorization controls. Keep it on the appropriate isolated control network and restrict access to approved hosts; there is no basis here to claim a particular authentication weakness or known exploit. It is not commonly observed open in internet-wide scan data.

Record

iana registry entry

port: :6801
service: ACNET Control System Protocol
transport: TCPUDP
encryption: cleartext
assignment: iana registered
risk: 7/10risk
category: Network Services System
usage: ACNET is Fermilab’s accelerator control system, used by control-room applications and system components to monitor and operate accelerator equipment. Port 6801 is assigned to its protocol and is expected in the specialized control-system environment, not on ordinary public-facing servers.
lookups: 0rank 993
added: 2026-10-11
updated: 2026-10-11
references: IANA service name registry — port 6801

Something wrong?

This record is maintained by the engineers who use port 6801. Every field on it is editable — change what's wrong, say how you know, and a reviewer publishes it, usually within a minute. Last touched 2026-10-11.

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edit this record →back to the registry

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all 1,748 in network services →

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risk mix of the 8 listed

caution100%

0 of 8 encrypted

Port :6801ACNET Control System Protocol

Technical Details

Security Information

Related Ports

Port 6801ACNET Control System Protocol