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Port 1453 (genie-lm)

IANA assigns port 1453 to genie-lm: Genie License Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
genie-lm TCP Genie License Manager Paul Applegate -
genie-lm UDP Genie License Manager Paul Applegate -

Check what is listening on port 1453

Linux: is anything listening on TCP 1453?
sudo ss -tlnp 'sport = :1453'
Linux: UDP 1453
sudo ss -ulnp 'sport = :1453'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1453
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1453 '
Windows (Command Prompt)
netstat -ano | findstr :1453
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1453 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1453
From Windows
Test-NetConnection HOST -Port 1453
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1453

Block port 1453 in the firewall

ufw
sudo ufw deny 1453/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1453 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1453 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1453' -Direction Inbound -Protocol TCP -LocalPort 1453 -Action Block
ufw
sudo ufw deny 1453/udp
iptables
sudo iptables -A INPUT -p udp --dport 1453 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1453 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1453' -Direction Inbound -Protocol UDP -LocalPort 1453 -Action Block

Related ports

1451infoman1452gtegsc-lm1454interhdl-elmd, interhdl_elmd1455esl-lm

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