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Port 3992 (bv-ds)

IANA assigns port 3992 to bv-ds: BindView-DirectoryServer.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bv-ds TCP BindView-DirectoryServer - -
bv-ds UDP BindView-DirectoryServer - -

Check what is listening on port 3992

Linux: is anything listening on TCP 3992?
sudo ss -tlnp 'sport = :3992'
Linux: UDP 3992
sudo ss -ulnp 'sport = :3992'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3992
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3992 '
Windows (Command Prompt)
netstat -ano | findstr :3992
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3992 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3992
From Windows
Test-NetConnection HOST -Port 3992
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3992

Block port 3992 in the firewall

ufw
sudo ufw deny 3992/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3992 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3992 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3992' -Direction Inbound -Protocol TCP -LocalPort 3992 -Action Block
ufw
sudo ufw deny 3992/udp
iptables
sudo iptables -A INPUT -p udp --dport 3992 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3992 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3992' -Direction Inbound -Protocol UDP -LocalPort 3992 -Action Block

Related ports

3990bv-is3991bv-smcsrv3993bv-agent3995iss-mgmt-ssl

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