All ports
Port2804/TCP
dvr-esmPort
2804
Protocol
TCP
Category
Registered
Service
dvr-esm
What is port 2804?
Port 2804/TCP is a Registered port, registered with IANA for specific applications. It is associated with the dvr-esm service.
March Networks Digital Video Recorders and Enterprise Service Manager products
Useful commands
nmapnmap -p 2804 -sV example.comnetcatnc -zv example.com 2804curlcurl -v http://example.com:2804/telnettelnet example.com 2804bash(echo > /dev/tcp/example.com/2804) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2804/tcpDeny
sudo ufw deny 2804/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 2804 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 2804 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2804/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2804" dir=in action=allow protocol=TCP localport=2804Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 2804/TCP?
Port 2804/TCP is associated with the dvr-esm service. March Networks Digital Video Recorders and Enterprise Service Manager products
Is it safe to expose port 2804 to the Internet?
It depends on the service and configuration. Port 2804 (dvr-esm) is a Registered port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 2804 is open?
You can use nmap: `nmap -p 2804 -sV example.com`, netcat: `nc -zv example.com 2804`, or the bash command: `(echo > /dev/tcp/example.com/2804) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2804 on my firewall?
On Linux with UFW: `sudo ufw allow 2804/tcp` (open) or `sudo ufw deny 2804/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 2804 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2804" dir=in action=allow protocol=TCP localport=2804`.
What applications and services use port 2804?
Port 2804/TCP is used by the dvr-esm service. Specific uses depend on the software and configuration. Check our related tools section for more information.