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Port 6147 (montage-lm)

IANA assigns port 6147 to montage-lm: Montage License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
montage-lm TCP Montage License Manager Michael Ubell -
montage-lm UDP Montage License Manager Michael Ubell -

Check what is listening on port 6147

Linux: is anything listening on TCP 6147?
sudo ss -tlnp 'sport = :6147'
Linux: UDP 6147
sudo ss -ulnp 'sport = :6147'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6147
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6147 '
Windows (Command Prompt)
netstat -ano | findstr :6147
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6147 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6147
From Windows
Test-NetConnection HOST -Port 6147
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6147

Block port 6147 in the firewall

ufw
sudo ufw deny 6147/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6147 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6147 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6147' -Direction Inbound -Protocol TCP -LocalPort 6147 -Action Block
ufw
sudo ufw deny 6147/udp
iptables
sudo iptables -A INPUT -p udp --dport 6147 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6147 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6147' -Direction Inbound -Protocol UDP -LocalPort 6147 -Action Block

Related ports

6145statsci2-lm6146lonewolf-lm6148ricardo-lm6149tal-pod

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