- Serve it over HTTPS only and check the HTTP security headers.
- Keep admin consoles and development servers off the Internet.
- Patch the application server and remove default credentials and sample apps.
Port 280: http-mgmt
Port 280 is assigned by IANA to http-mgmt (http-mgmt).
280
How http-mgmt works
WebA browser sends an HTTP request to port 280 and the http-mgmt server sends the page back.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Well-known (0-1023)
- Category
- Web
Is port 280 dangerous?
We have no specific security note for port 280. Its risk depends on the program actually listening on it. General advice for web services:
IANA registry entries for port 280
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| http-mgmt | 280 | TCP, UDP | http-mgmt | - | - |
// source: IANA service name and port number registry
Which program uses port 280, and is it reachable?
Linux
sudo ss -ltnup 'sport = :280' # process listening on 280
sudo lsof -nP -i :280macOS
sudo lsof -nP -i :280
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 280 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 280 netstat -ano | findstr :280
From another machine
nmap -p 280 -sV <host> sudo nmap -sU -p 280 <host> nc -zv <host> 280
Block it in the firewall
sudo ufw deny 280/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 280" -Direction Inbound -LocalPort 280 -Protocol TCP -Action Block # Windows
What is port 280 used for?
Port 280 is assigned by IANA to http-mgmt (http-mgmt).
Is port 280 TCP or UDP?
Port 280 is registered for TCP and UDP.
Is it safe to open port 280?
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. Serve it over HTTPS only and check the HTTP security headers.
How do I check if port 280 is open?
On Linux run "ss -ltnup 'sport = :280'", on macOS "lsof -nP -i :280", and on Windows "netstat -ano | findstr :280" to see the local process. From another machine, "nmap -p 280 <host>" shows whether it is reachable.
Other web ports
:443 HTTPS tcp · udp · sctp · low risk :80 HTTP tcp · udp · sctp · moderate risk :8080 HTTP alternate tcp · udp · high risk :8443 HTTPS alternate tcp · udp · moderate risk :3000 Dev servers / Grafana tcp · udp · moderate risk :5000 Flask / Docker registry / UPnP tcp · udp · moderate risk :8000 HTTP alternate (dev) tcp · udp · moderate risk :8888 Jupyter / HTTP alternate tcp · udp · high risk