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Port 1872 (canocentral1)

IANA assigns port 1872 to canocentral1: Cano Central 1.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
canocentral1 TCP Cano Central 1 Mark McNamara -
canocentral1 UDP Cano Central 1 Mark McNamara -

Check what is listening on port 1872

Linux: is anything listening on TCP 1872?
sudo ss -tlnp 'sport = :1872'
Linux: UDP 1872
sudo ss -ulnp 'sport = :1872'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1872
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1872 '
Windows (Command Prompt)
netstat -ano | findstr :1872
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1872 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1872
From Windows
Test-NetConnection HOST -Port 1872
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1872

Block port 1872 in the firewall

ufw
sudo ufw deny 1872/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1872 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1872 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1872' -Direction Inbound -Protocol TCP -LocalPort 1872 -Action Block
ufw
sudo ufw deny 1872/udp
iptables
sudo iptables -A INPUT -p udp --dport 1872 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1872 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1872' -Direction Inbound -Protocol UDP -LocalPort 1872 -Action Block

Related ports

1870sunscalar-dns1871canocentral01873fjmpjps1874fjswapsnp

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