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Port 8199 (vvr-data)

IANA assigns port 8199 to vvr-data: VVR DATA.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vvr-data TCP VVR DATA Ming Xu -
vvr-data UDP VVR DATA Ming Xu -

Check what is listening on port 8199

Linux: is anything listening on TCP 8199?
sudo ss -tlnp 'sport = :8199'
Linux: UDP 8199
sudo ss -ulnp 'sport = :8199'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8199
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8199 '
Windows (Command Prompt)
netstat -ano | findstr :8199
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8199 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8199
From Windows
Test-NetConnection HOST -Port 8199
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8199

Block port 8199 in the firewall

ufw
sudo ufw deny 8199/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8199 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8199 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8199' -Direction Inbound -Protocol TCP -LocalPort 8199 -Action Block
ufw
sudo ufw deny 8199/udp
iptables
sudo iptables -A INPUT -p udp --dport 8199 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8199 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8199' -Direction Inbound -Protocol UDP -LocalPort 8199 -Action Block

Related ports

8194blp18195blp28200HashiCorp Vault8201trivnet2

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.