- 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 5357: Web Services for Devices
Port 5357 is assigned by IANA to wsdapi (Web Services for Devices).
5357
How wsdapi works
WebA browser sends an HTTP request to port 5357 and the wsdapi 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
- Registered (1024-49151)
- Category
- Web
Is port 5357 dangerous?
We have no specific security note for port 5357. Its risk depends on the program actually listening on it. General advice for web services:
IANA registry entries for port 5357
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| wsdapi | 5357 | TCP, UDP | Web Services for Devices | - | 2005-08 |
// source: IANA service name and port number registry
Which program uses port 5357, and is it reachable?
Linux
sudo ss -ltnup 'sport = :5357' # process listening on 5357
sudo lsof -nP -i :5357macOS
sudo lsof -nP -i :5357
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5357 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 5357 netstat -ano | findstr :5357
From another machine
nmap -p 5357 -sV <host> sudo nmap -sU -p 5357 <host> nc -zv <host> 5357
Block it in the firewall
sudo ufw deny 5357/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 5357" -Direction Inbound -LocalPort 5357 -Protocol TCP -Action Block # Windows
What is port 5357 used for?
Port 5357 is assigned by IANA to wsdapi (Web Services for Devices).
Is port 5357 TCP or UDP?
Port 5357 is registered for TCP and UDP.
Is it safe to open port 5357?
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 5357 is open?
On Linux run "ss -ltnup 'sport = :5357'", on macOS "lsof -nP -i :5357", and on Windows "netstat -ano | findstr :5357" to see the local process. From another machine, "nmap -p 5357 <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