- Require authentication on cameras and media servers.
- Keep IP cameras and recorders off the Internet; use a VPN for remote viewing.
- Update device firmware.
Port 48049: 3GPP Cell Broadcast Service Protocol
Port 48049 is assigned by IANA to 3gpp-cbsp (3GPP Cell Broadcast Service Protocol).
48049
How 3gpp-cbsp works
Media & streamingThe device streams video frames over port 48049, continuously, as they are captured.
- Transport
- TCP
- 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
- Media & streaming
Is port 48049 dangerous?
We have no specific security note for port 48049. Its risk depends on the program actually listening on it. General advice for media & streaming services:
IANA registry entries for port 48049
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| 3gpp-cbsp | 48049 | TCP | 3GPP Cell Broadcast Service Protocol | - | 2009-12-07 |
| - | 48049 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 48049, and is it reachable?
Linux
sudo ss -ltnup 'sport = :48049' # process listening on 48049
sudo lsof -nP -i :48049macOS
sudo lsof -nP -i :48049
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 48049 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 48049 netstat -ano | findstr :48049
From another machine
nmap -p 48049 -sV <host> nc -zv <host> 48049
Block it in the firewall
sudo ufw deny 48049/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 48049" -Direction Inbound -LocalPort 48049 -Protocol TCP -Action Block # Windows
What is port 48049 used for?
Port 48049 is assigned by IANA to 3gpp-cbsp (3GPP Cell Broadcast Service Protocol).
Is port 48049 TCP or UDP?
Port 48049 is registered for TCP.
Is it safe to open port 48049?
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. Require authentication on cameras and media servers.
How do I check if port 48049 is open?
On Linux run "ss -ltnup 'sport = :48049'", on macOS "lsof -nP -i :48049", and on Windows "netstat -ano | findstr :48049" to see the local process. From another machine, "nmap -p 48049 <host>" shows whether it is reachable.