Port 704
elcsd · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | elcsd |
Frequently asked questions
What is port 704 used for?
Port 704 is registered with the IANA for elcsd (TCP/UDP). Description: errlog copy/server daemon.
Is port 704 a well-known port?
Yes. Port 704 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 704 is open?
Locally on Linux with ss -tulpn | grep ':704\b', on Windows with netstat -ano | findstr :704. To test a remote host use Test-NetConnection <host> -Port 704 in PowerShell or nc -zv <host> 704 on Linux/macOS.
How do I open port 704 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 704/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=704/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 704" -Direction Inbound -Protocol TCP -LocalPort 704 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | elcsd | errlog copy/server daemon |
| UDP | elcsd | errlog copy/server daemon |