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Port 4660 (smaclmgr)

IANA assigns port 4660 to smaclmgr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
smaclmgr TCP smaclmgr Hiromi Taki -
smaclmgr UDP smaclmgr Hiromi Taki -

Check what is listening on port 4660

Linux: is anything listening on TCP 4660?
sudo ss -tlnp 'sport = :4660'
Linux: UDP 4660
sudo ss -ulnp 'sport = :4660'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4660
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4660 '
Windows (Command Prompt)
netstat -ano | findstr :4660
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4660 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4660
From Windows
Test-NetConnection HOST -Port 4660
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4660

Block port 4660 in the firewall

ufw
sudo ufw deny 4660/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4660 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4660 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4660' -Direction Inbound -Protocol TCP -LocalPort 4660 -Action Block
ufw
sudo ufw deny 4660/udp
iptables
sudo iptables -A INPUT -p udp --dport 4660 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4660 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4660' -Direction Inbound -Protocol UDP -LocalPort 4660 -Action Block

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