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Port 3149 (nm-game-server)

IANA assigns port 3149 to nm-game-server: NetMike Game Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nm-game-server TCP NetMike Game Server - -
nm-game-server UDP NetMike Game Server - -

Check what is listening on port 3149

Linux: is anything listening on TCP 3149?
sudo ss -tlnp 'sport = :3149'
Linux: UDP 3149
sudo ss -ulnp 'sport = :3149'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3149
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3149 '
Windows (Command Prompt)
netstat -ano | findstr :3149
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3149 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3149
From Windows
Test-NetConnection HOST -Port 3149
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3149

Block port 3149 in the firewall

ufw
sudo ufw deny 3149/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3149 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3149 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3149' -Direction Inbound -Protocol TCP -LocalPort 3149 -Action Block
ufw
sudo ufw deny 3149/udp
iptables
sudo iptables -A INPUT -p udp --dport 3149 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3149 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3149' -Direction Inbound -Protocol UDP -LocalPort 3149 -Action Block

Related ports

3147rfio3148nm-game-admin3150nm-asses-admin3151nm-assessor

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