- 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 8001: VCOM Tunnel
Port 8001 is assigned by IANA to vcom-tunnel (VCOM Tunnel).
8001
How vcom-tunnel 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 8001 dangerous?
We have no specific security note for port 8001. Its risk depends on the program actually listening on it. General advice for vpn, tunnels & proxies services:
IANA registry entries for port 8001
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| vcom-tunnel | 8001 | TCP, UDP | VCOM Tunnel Reported: Known Unauthorized Use on port 8001 | - | - |
// source: IANA service name and port number registry
Which program uses port 8001, and is it reachable?
Linux
sudo ss -ltnup 'sport = :8001' # process listening on 8001
sudo lsof -nP -i :8001macOS
sudo lsof -nP -i :8001
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8001 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 8001 netstat -ano | findstr :8001
From another machine
nmap -p 8001 -sV <host> sudo nmap -sU -p 8001 <host> nc -zv <host> 8001
Block it in the firewall
sudo ufw deny 8001/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 8001" -Direction Inbound -LocalPort 8001 -Protocol TCP -Action Block # Windows
What is port 8001 used for?
Port 8001 is assigned by IANA to vcom-tunnel (VCOM Tunnel).
Is port 8001 TCP or UDP?
Port 8001 is registered for TCP and UDP.
Is it safe to open port 8001?
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 8001 is open?
On Linux run "ss -ltnup 'sport = :8001'", on macOS "lsof -nP -i :8001", and on Windows "netstat -ano | findstr :8001" to see the local process. From another machine, "nmap -p 8001 <host>" shows whether it is reachable.