- 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 9201: WAP session service
Port 9201 is assigned by IANA to wap-wsp-wtp (WAP session service).
9201
How wap-wsp-wtp works
WebA browser sends an HTTP request to port 9201 and the wap-wsp-wtp 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 9201 dangerous?
We have no specific security note for port 9201. Its risk depends on the program actually listening on it. General advice for web services:
IANA registry entries for port 9201
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| wap-wsp-wtp | 9201 | TCP, UDP | WAP session service | - | - |
// source: IANA service name and port number registry
Which program uses port 9201, and is it reachable?
Linux
sudo ss -ltnup 'sport = :9201' # process listening on 9201
sudo lsof -nP -i :9201macOS
sudo lsof -nP -i :9201
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9201 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 9201 netstat -ano | findstr :9201
From another machine
nmap -p 9201 -sV <host> sudo nmap -sU -p 9201 <host> nc -zv <host> 9201
Block it in the firewall
sudo ufw deny 9201/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 9201" -Direction Inbound -LocalPort 9201 -Protocol TCP -Action Block # Windows
What is port 9201 used for?
Port 9201 is assigned by IANA to wap-wsp-wtp (WAP session service).
Is port 9201 TCP or UDP?
Port 9201 is registered for TCP and UDP.
Is it safe to open port 9201?
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 9201 is open?
On Linux run "ss -ltnup 'sport = :9201'", on macOS "lsof -nP -i :9201", and on Windows "netstat -ano | findstr :9201" to see the local process. From another machine, "nmap -p 9201 <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