CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Web

Port 280: http-mgmt

Port 280 is assigned by IANA to http-mgmt (http-mgmt).

280

How http-mgmt works

Web
browser:280http-mgmt browser:280http-mgmt

A 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
01 Security

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:

  • 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.
02 Registry

IANA registry entries for port 280

ServicePortTransportDescriptionReferenceUpdated
http-mgmt 280 TCP, UDP http-mgmt - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 280, and is it reachable?

Linux

sudo ss -ltnup 'sport = :280'      # process listening on 280
sudo lsof -nP -i :280

macOS

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
04 FAQ
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.

05 Related
: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

Latest vulnerability news

All news