All ports
Port3956/UDP
gvcpPort
3956
Protocol
UDP
Category
Registered
Service
gvcp
What is port 3956?
Port 3956/UDP is a Registered port, registered with IANA for specific applications. It is associated with the gvcp service.
GigE Vision Control
Useful commands
nmapnmap -p 3956 -sV example.comnetcatnc -zv example.com 3956curlcurl -v http://example.com:3956/telnettelnet example.com 3956bash(echo > /dev/udp/example.com/3956) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 3956/udpDeny
sudo ufw deny 3956/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 3956 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 3956 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=3956/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 3956" dir=in action=allow protocol=UDP localport=3956Security 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- Outdated versions with vulnerabilities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 3956/UDP?
Port 3956/UDP is associated with the gvcp service. GigE Vision Control
Is it safe to expose port 3956 to the Internet?
It depends on the service and configuration. Port 3956 (gvcp) 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 3956 is open?
You can use nmap: `nmap -p 3956 -sV example.com`, netcat: `nc -zv example.com 3956`, or the bash command: `(echo > /dev/udp/example.com/3956) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 3956 on my firewall?
On Linux with UFW: `sudo ufw allow 3956/udp` (open) or `sudo ufw deny 3956/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 3956 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 3956" dir=in action=allow protocol=UDP localport=3956`.
What applications and services use port 3956?
Port 3956/UDP is used by the gvcp service. Specific uses depend on the software and configuration. Check our related tools section for more information.