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Port 3201 (cpq-tasksmart)

IANA assigns port 3201 to cpq-tasksmart: CPQ-TaskSmart.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cpq-tasksmart TCP CPQ-TaskSmart Jackie Lau -
cpq-tasksmart UDP CPQ-TaskSmart Jackie Lau -

Check what is listening on port 3201

Linux: is anything listening on TCP 3201?
sudo ss -tlnp 'sport = :3201'
Linux: UDP 3201
sudo ss -ulnp 'sport = :3201'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3201
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3201 '
Windows (Command Prompt)
netstat -ano | findstr :3201
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3201 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3201
From Windows
Test-NetConnection HOST -Port 3201
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3201

Block port 3201 in the firewall

ufw
sudo ufw deny 3201/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3201 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3201 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3201' -Direction Inbound -Protocol TCP -LocalPort 3201 -Action Block
ufw
sudo ufw deny 3201/udp
iptables
sudo iptables -A INPUT -p udp --dport 3201 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3201 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3201' -Direction Inbound -Protocol UDP -LocalPort 3201 -Action Block

Related ports

3199dmod-workspace3200tick-port3202intraintra3203netwatcher-mon

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