- Patch VPN gateways quickly: they are a top initial access target.
- Use certificates or MFA rather than shared secrets.
- Investigate unexpected tunnels and proxies: they are also attacker tools.
Port 2277: Bt device control proxy
Port 2277 is assigned by IANA to bluectrlproxy (Bt device control proxy).
2277
How bluectrlproxy works
VPN, tunnels & proxiesTraffic is wrapped in a tunnel between the two ends, so the network in between only sees the tunnel.
- 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
- VPN, tunnels & proxies
Is port 2277 dangerous?
We have no specific security note for port 2277. Its risk depends on the program actually listening on it. General advice for vpn, tunnels & proxies services:
IANA registry entries for port 2277
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| bluectrlproxy | 2277 | TCP, UDP | Bt device control proxy | - | 2004-12 |
// source: IANA service name and port number registry
Which program uses port 2277, and is it reachable?
Linux
sudo ss -ltnup 'sport = :2277' # process listening on 2277
sudo lsof -nP -i :2277macOS
sudo lsof -nP -i :2277
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2277 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 2277 netstat -ano | findstr :2277
From another machine
nmap -p 2277 -sV <host> sudo nmap -sU -p 2277 <host> nc -zv <host> 2277
Block it in the firewall
sudo ufw deny 2277/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 2277" -Direction Inbound -LocalPort 2277 -Protocol TCP -Action Block # Windows
What is port 2277 used for?
Port 2277 is assigned by IANA to bluectrlproxy (Bt device control proxy).
Is port 2277 TCP or UDP?
Port 2277 is registered for TCP and UDP.
Is it safe to open port 2277?
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. Patch VPN gateways quickly: they are a top initial access target.
How do I check if port 2277 is open?
On Linux run "ss -ltnup 'sport = :2277'", on macOS "lsof -nP -i :2277", and on Windows "netstat -ano | findstr :2277" to see the local process. From another machine, "nmap -p 2277 <host>" shows whether it is reachable.