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Port 217 (dbase)

IANA assigns port 217 to dbase: dBASE Unix.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dbase TCP dBASE Unix Don Gibson -
dbase UDP dBASE Unix Don Gibson -

Check what is listening on port 217

Linux: is anything listening on TCP 217?
sudo ss -tlnp 'sport = :217'
Linux: UDP 217
sudo ss -ulnp 'sport = :217'
Linux / macOS: which process owns the port
sudo lsof -nP -i :217
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':217 '
Windows (Command Prompt)
netstat -ano | findstr :217
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 217 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 217
From Windows
Test-NetConnection HOST -Port 217
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 217

Block port 217 in the firewall

ufw
sudo ufw deny 217/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 217 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 217 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 217' -Direction Inbound -Protocol TCP -LocalPort 217 -Action Block
ufw
sudo ufw deny 217/udp
iptables
sudo iptables -A INPUT -p udp --dport 217 -j DROP
nftables
sudo nft add rule inet filter input udp dport 217 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 217' -Direction Inbound -Protocol UDP -LocalPort 217 -Action Block

Related ports

215softpc216CAIlic218mpp219uarps

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