Port 17500
db-lsp and db-lsp-disc · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | db-lsp and db-lsp-disc |
| Registered | 2010-01-21 |
Frequently asked questions
What is port 17500 used for?
Port 17500 is registered with the IANA for db-lsp and db-lsp-disc (TCP/UDP). Description: Dropbox LanSync Protocol; Dropbox LanSync Discovery.
Is port 17500 a well-known port?
No. Port 17500 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 17500 is open?
Locally on Linux with ss -tulpn | grep ':17500\b', on Windows with netstat -ano | findstr :17500. To test a remote host use Test-NetConnection <host> -Port 17500 in PowerShell or nc -zv <host> 17500 on Linux/macOS.
How do I open port 17500 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 17500/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=17500/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 17500" -Direction Inbound -Protocol TCP -LocalPort 17500 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | db-lsp | Dropbox LanSync Protocol |
| UDP | db-lsp-disc | Dropbox LanSync Discovery |