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Port 3230 (sftdst-port)

IANA assigns port 3230 to sftdst-port: Software Distributor Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sftdst-port TCP Software Distributor Port Andrea Lanza -
sftdst-port UDP Software Distributor Port Andrea Lanza -

Registry dates for this port: last modified 2014-02-21.

Check what is listening on port 3230

Linux: is anything listening on TCP 3230?
sudo ss -tlnp 'sport = :3230'
Linux: UDP 3230
sudo ss -ulnp 'sport = :3230'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3230
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3230 '
Windows (Command Prompt)
netstat -ano | findstr :3230
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3230 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3230
From Windows
Test-NetConnection HOST -Port 3230
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3230

Block port 3230 in the firewall

ufw
sudo ufw deny 3230/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3230 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3230 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3230' -Direction Inbound -Protocol TCP -LocalPort 3230 -Action Block
ufw
sudo ufw deny 3230/udp
iptables
sudo iptables -A INPUT -p udp --dport 3230 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3230 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3230' -Direction Inbound -Protocol UDP -LocalPort 3230 -Action Block

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3228dwmsgserver3229global-cd-port3231vidigo3232mdtp

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