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Port 1568 (tsspmap)

IANA assigns port 1568 to tsspmap.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
tsspmap TCP tsspmap Paul W Nelson -
tsspmap UDP tsspmap Paul W Nelson -

Check what is listening on port 1568

Linux: is anything listening on TCP 1568?
sudo ss -tlnp 'sport = :1568'
Linux: UDP 1568
sudo ss -ulnp 'sport = :1568'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1568
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1568 '
Windows (Command Prompt)
netstat -ano | findstr :1568
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1568 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1568
From Windows
Test-NetConnection HOST -Port 1568
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1568

Block port 1568 in the firewall

ufw
sudo ufw deny 1568/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1568 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1568 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1568' -Direction Inbound -Protocol TCP -LocalPort 1568 -Action Block
ufw
sudo ufw deny 1568/udp
iptables
sudo iptables -A INPUT -p udp --dport 1568 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1568 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1568' -Direction Inbound -Protocol UDP -LocalPort 1568 -Action Block

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