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Port 3246 (dvt-system)

IANA assigns port 3246 to dvt-system: DVT SYSTEM PORT.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dvt-system TCP DVT SYSTEM PORT - -
dvt-system UDP DVT SYSTEM PORT - -

Check what is listening on port 3246

Linux: is anything listening on TCP 3246?
sudo ss -tlnp 'sport = :3246'
Linux: UDP 3246
sudo ss -ulnp 'sport = :3246'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3246
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3246 '
Windows (Command Prompt)
netstat -ano | findstr :3246
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3246 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3246
From Windows
Test-NetConnection HOST -Port 3246
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3246

Block port 3246 in the firewall

ufw
sudo ufw deny 3246/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3246 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3246 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3246' -Direction Inbound -Protocol TCP -LocalPort 3246 -Action Block
ufw
sudo ufw deny 3246/udp
iptables
sudo iptables -A INPUT -p udp --dport 3246 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3246 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3246' -Direction Inbound -Protocol UDP -LocalPort 3246 -Action Block

Related ports

3244onesaf3245vieo-fe3247dvt-data3248procos-lm

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