- Require TLS and authenticated submission.
- Make sure the server is not an open relay.
- Publish SPF, DKIM and DMARC for the domain.
Port 5682: BrightCore control & data transfer exchange
Port 5682 is assigned by IANA to brightcore (BrightCore control & data transfer exchange).
5682
How brightcore works
EmailMail servers hand messages to each other over port 5682, one hop at a time, until the recipient's server.
- Transport
- 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
Is port 5682 dangerous?
We have no specific security note for port 5682. Its risk depends on the program actually listening on it. General advice for email services:
IANA registry entries for port 5682
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| brightcore | 5682 | UDP | BrightCore control & data transfer exchange | - | 2010-06-10 |
| - | 5682 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 5682, and is it reachable?
Linux
sudo ss -ltnup 'sport = :5682' # process listening on 5682
sudo lsof -nP -i :5682macOS
sudo lsof -nP -i :5682
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5682 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 5682 netstat -ano | findstr :5682
From another machine
nmap -p 5682 -sV <host> sudo nmap -sU -p 5682 <host> nc -zv <host> 5682
Block it in the firewall
sudo ufw deny 5682/udp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 5682" -Direction Inbound -LocalPort 5682 -Protocol UDP -Action Block # Windows
What is port 5682 used for?
Port 5682 is assigned by IANA to brightcore (BrightCore control & data transfer exchange).
Is port 5682 TCP or UDP?
Port 5682 is registered for UDP.
Is it safe to open port 5682?
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. Require TLS and authenticated submission.
How do I check if port 5682 is open?
On Linux run "ss -ltnup 'sport = :5682'", on macOS "lsof -nP -i :5682", and on Windows "netstat -ano | findstr :5682" to see the local process. From another machine, "nmap -p 5682 <host>" shows whether it is reachable.