HTTPfy

Port 1652 (xnmp)

IANA assigns port 1652 to xnmp.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
xnmp TCP xnmp Ali Saleh -
xnmp UDP xnmp Ali Saleh -

Check what is listening on port 1652

Linux: is anything listening on TCP 1652?
sudo ss -tlnp 'sport = :1652'
Linux: UDP 1652
sudo ss -ulnp 'sport = :1652'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1652
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1652 '
Windows (Command Prompt)
netstat -ano | findstr :1652
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1652 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1652
From Windows
Test-NetConnection HOST -Port 1652
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1652

Block port 1652 in the firewall

ufw
sudo ufw deny 1652/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1652 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1652 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1652' -Direction Inbound -Protocol TCP -LocalPort 1652 -Action Block
ufw
sudo ufw deny 1652/udp
iptables
sudo iptables -A INPUT -p udp --dport 1652 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1652 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1652' -Direction Inbound -Protocol UDP -LocalPort 1652 -Action Block

Related ports

1650nkd1651shiva-confsrvr, shiva_confsrvr1653alphatech-lm1654stargatealerts

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