Port 5725 (ms-ilm)

IANA assigns port 5725 to ms-ilm: Microsoft Identity Lifecycle Manager.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

ms-ilm TCP Microsoft Identity Lifecycle Manager Rob Ward -

Linux: is anything listening on TCP 5725?

sudo ss -tlnp 'sport = :5725'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5725

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5725 '

Windows (Command Prompt)

netstat -ano | findstr :5725

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5725 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5725

From Windows

Test-NetConnection HOST -Port 5725

ufw

sudo ufw deny 5725/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5725 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 5725 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 5725' -Direction Inbound -Protocol TCP -LocalPort 5725 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.