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Port 1619 (xs-openstorage)

IANA assigns port 1619 to xs-openstorage.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
xs-openstorage TCP xs-openstorage XuiS Software Ltd -
xs-openstorage UDP xs-openstorage XuiS Software Ltd -

Check what is listening on port 1619

Linux: is anything listening on TCP 1619?
sudo ss -tlnp 'sport = :1619'
Linux: UDP 1619
sudo ss -ulnp 'sport = :1619'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1619
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1619 '
Windows (Command Prompt)
netstat -ano | findstr :1619
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1619 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1619
From Windows
Test-NetConnection HOST -Port 1619
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1619

Block port 1619 in the firewall

ufw
sudo ufw deny 1619/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1619 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1619 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1619' -Direction Inbound -Protocol TCP -LocalPort 1619 -Action Block
ufw
sudo ufw deny 1619/udp
iptables
sudo iptables -A INPUT -p udp --dport 1619 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1619 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1619' -Direction Inbound -Protocol UDP -LocalPort 1619 -Action Block

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