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// Other services

Port 2679: Sync Server SSL

Port 2679 is assigned by IANA to syncserverssl (Sync Server SSL).

2679

How syncserverssl works

Other services
client:2679syncserversslresponse client:2679syncserversslresponse

The client sends a request to port 2679 and the syncserverssl service answers.

Transport
TCP · UDP
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 2679 dangerous?

We have no specific security note for port 2679. 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 2679

ServicePortTransportDescriptionReferenceUpdated
syncserverssl 2679 TCP, UDP Sync Server SSL - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2679, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2679'      # process listening on 2679
sudo lsof -nP -i :2679

macOS

sudo lsof -nP -i :2679

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2679 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2679
netstat -ano | findstr :2679

From another machine

nmap -p 2679 -sV <host>
sudo nmap -sU -p 2679 <host>
nc -zv <host> 2679

Block it in the firewall

sudo ufw deny 2679/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2679" -Direction Inbound -LocalPort 2679 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2679 used for?

Port 2679 is assigned by IANA to syncserverssl (Sync Server SSL).

Is port 2679 TCP or UDP?

Port 2679 is registered for TCP and UDP.

Is it safe to open port 2679?

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 2679 is open?

On Linux run "ss -ltnup 'sport = :2679'", on macOS "lsof -nP -i :2679", and on Windows "netstat -ano | findstr :2679" to see the local process. From another machine, "nmap -p 2679 <host>" shows whether it is reachable.

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