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// Other services

Port 6705: ForCES MP (Medium Priority) channel

Port 6705 is assigned by IANA to frc-mp (ForCES MP (Medium Priority) channel).

6705

How frc-mp works

Other services
client:6705frc-mpresponse client:6705frc-mpresponse

The client sends a request to port 6705 and the frc-mp service answers.

Transport
SCTP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 6705 dangerous?

We have no specific security note for port 6705. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 6705

ServicePortTransportDescriptionReferenceUpdated
frc-mp 6705 SCTP ForCES MP (Medium Priority) channel RFC 5811 -
-6705-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 6705, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6705'      # process listening on 6705
sudo lsof -nP -i :6705

macOS

sudo lsof -nP -i :6705

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6705 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6705
netstat -ano | findstr :6705

From another machine

nmap -p 6705 -sV <host>
nc -zv <host> 6705

Block it in the firewall

sudo ufw deny 6705/sctp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6705" -Direction Inbound -LocalPort 6705 -Protocol SCTP -Action Block  # Windows
04 FAQ
What is port 6705 used for?

Port 6705 is assigned by IANA to frc-mp (ForCES MP (Medium Priority) channel).

Is port 6705 TCP or UDP?

Port 6705 is registered for SCTP.

Is it safe to open port 6705?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 6705 is open?

On Linux run "ss -ltnup 'sport = :6705'", on macOS "lsof -nP -i :6705", and on Windows "netstat -ano | findstr :6705" to see the local process. From another machine, "nmap -p 6705 <host>" shows whether it is reachable.

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