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Port 2524 (optiwave-lm)

IANA assigns port 2524 to optiwave-lm: Optiwave License Management.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
optiwave-lm TCP Optiwave License Management Slawomir Krzesinski -
optiwave-lm UDP Optiwave License Management Slawomir Krzesinski -

Check what is listening on port 2524

Linux: is anything listening on TCP 2524?
sudo ss -tlnp 'sport = :2524'
Linux: UDP 2524
sudo ss -ulnp 'sport = :2524'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2524
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2524 '
Windows (Command Prompt)
netstat -ano | findstr :2524
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2524 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2524
From Windows
Test-NetConnection HOST -Port 2524
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2524

Block port 2524 in the firewall

ufw
sudo ufw deny 2524/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2524 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2524 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2524' -Direction Inbound -Protocol TCP -LocalPort 2524 -Action Block
ufw
sudo ufw deny 2524/udp
iptables
sudo iptables -A INPUT -p udp --dport 2524 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2524 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2524' -Direction Inbound -Protocol UDP -LocalPort 2524 -Action Block

Related ports

2522windb2523qke-llc-v32525ms-v-worlds2526ema-sent-lm

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