- 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.
Port 7683: Cleondris DMT
Port 7683 is assigned by IANA to dmt (Cleondris DMT).
7683
How dmt works
Other servicesThe client sends a request to port 7683 and the dmt service answers.
- Transport
- TCP
- 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
Is port 7683 dangerous?
We have no specific security note for port 7683. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 7683
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| dmt | 7683 | TCP | Cleondris DMT | - | 2015-03-31 |
| - | 7683 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 7683, and is it reachable?
Linux
sudo ss -ltnup 'sport = :7683' # process listening on 7683
sudo lsof -nP -i :7683macOS
sudo lsof -nP -i :7683
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7683 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 7683 netstat -ano | findstr :7683
From another machine
nmap -p 7683 -sV <host> nc -zv <host> 7683
Block it in the firewall
sudo ufw deny 7683/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 7683" -Direction Inbound -LocalPort 7683 -Protocol TCP -Action Block # Windows
What is port 7683 used for?
Port 7683 is assigned by IANA to dmt (Cleondris DMT).
Is port 7683 TCP or UDP?
Port 7683 is registered for TCP.
Is it safe to open port 7683?
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 7683 is open?
On Linux run "ss -ltnup 'sport = :7683'", on macOS "lsof -nP -i :7683", and on Windows "netstat -ano | findstr :7683" to see the local process. From another machine, "nmap -p 7683 <host>" shows whether it is reachable.
Other other services ports
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp