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Port 3883 (vrpn)

IANA assigns port 3883 to vrpn: VR Peripheral Network.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vrpn TCP VR Peripheral Network Sensics -
vrpn UDP VR Peripheral Network Sensics -

Registry dates for this port: registered 2003-10, last modified 2015-05-04.

Check what is listening on port 3883

Linux: is anything listening on TCP 3883?
sudo ss -tlnp 'sport = :3883'
Linux: UDP 3883
sudo ss -ulnp 'sport = :3883'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3883
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3883 '
Windows (Command Prompt)
netstat -ano | findstr :3883
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3883 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3883
From Windows
Test-NetConnection HOST -Port 3883
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3883

Block port 3883 in the firewall

ufw
sudo ufw deny 3883/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3883 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3883 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3883' -Direction Inbound -Protocol TCP -LocalPort 3883 -Action Block
ufw
sudo ufw deny 3883/udp
iptables
sudo iptables -A INPUT -p udp --dport 3883 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3883 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3883' -Direction Inbound -Protocol UDP -LocalPort 3883 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.