Port 2804
dvr-esm · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | dvr-esm |
| Registered | 2004-06 |
Frequently asked questions
What is port 2804 used for?
Port 2804 is registered with the IANA for dvr-esm (TCP/UDP). Description: March Networks Digital Video Recorders and Enterprise Service Manager products.
Is port 2804 a well-known port?
No. Port 2804 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2804 is open?
Locally on Linux with ss -tulpn | grep ':2804\b', on Windows with netstat -ano | findstr :2804. To test a remote host use Test-NetConnection <host> -Port 2804 in PowerShell or nc -zv <host> 2804 on Linux/macOS.
How do I open port 2804 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2804/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2804/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2804" -Direction Inbound -Protocol TCP -LocalPort 2804 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | dvr-esm | March Networks Digital Video Recorders and Enterprise Service Manager products |
| UDP | dvr-esm | March Networks Digital Video Recorders and Enterprise Service Manager products |