- Use strong credentials and TLS for signalling.
- Rate-limit registrations to stop extension scanning and toll fraud.
- Alert on unexpected chat protocols leaving servers (possible command and control).
Port 4801: Icona Web Embedded Chat
Port 4801 is assigned by IANA to iwec (Icona Web Embedded Chat).
4801
How iwec works
Voice & chatPort 4801 sets up the call (who calls whom), then the voice travels as a stream of audio packets.
- 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
- Voice & chat
Is port 4801 dangerous?
We have no specific security note for port 4801. Its risk depends on the program actually listening on it. General advice for voice & chat services:
IANA registry entries for port 4801
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| iwec | 4801 | TCP, UDP | Icona Web Embedded Chat | - | - |
// source: IANA service name and port number registry
Which program uses port 4801, and is it reachable?
Linux
sudo ss -ltnup 'sport = :4801' # process listening on 4801
sudo lsof -nP -i :4801macOS
sudo lsof -nP -i :4801
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4801 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 4801 netstat -ano | findstr :4801
From another machine
nmap -p 4801 -sV <host> sudo nmap -sU -p 4801 <host> nc -zv <host> 4801
Block it in the firewall
sudo ufw deny 4801/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 4801" -Direction Inbound -LocalPort 4801 -Protocol TCP -Action Block # Windows
What is port 4801 used for?
Port 4801 is assigned by IANA to iwec (Icona Web Embedded Chat).
Is port 4801 TCP or UDP?
Port 4801 is registered for TCP and UDP.
Is it safe to open port 4801?
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. Use strong credentials and TLS for signalling.
How do I check if port 4801 is open?
On Linux run "ss -ltnup 'sport = :4801'", on macOS "lsof -nP -i :4801", and on Windows "netstat -ano | findstr :4801" to see the local process. From another machine, "nmap -p 4801 <host>" shows whether it is reachable.