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Port 3272 (user-manager)

IANA assigns port 3272 to user-manager: Fujitsu User Manager.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
user-manager TCP Fujitsu User Manager Yukihiko Sakurai -
user-manager UDP Fujitsu User Manager Yukihiko Sakurai -

Check what is listening on port 3272

Linux: is anything listening on TCP 3272?
sudo ss -tlnp 'sport = :3272'
Linux: UDP 3272
sudo ss -ulnp 'sport = :3272'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3272
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3272 '
Windows (Command Prompt)
netstat -ano | findstr :3272
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3272 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3272
From Windows
Test-NetConnection HOST -Port 3272
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3272

Block port 3272 in the firewall

ufw
sudo ufw deny 3272/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3272 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3272 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3272' -Direction Inbound -Protocol TCP -LocalPort 3272 -Action Block
ufw
sudo ufw deny 3272/udp
iptables
sudo iptables -A INPUT -p udp --dport 3272 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3272 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3272' -Direction Inbound -Protocol UDP -LocalPort 3272 -Action Block

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