All ports
Port4374/TCP
psi-pttPort
4374
Protocol
TCP
Category
Registered
Service
psi-ptt
What is port 4374?
Port 4374/TCP is a Registered port, registered with IANA for specific applications. It is associated with the psi-ptt service.
PSI Push-to-Talk Protocol
Useful commands
nmapnmap -p 4374 -sV example.comnetcatnc -zv example.com 4374curlcurl -v http://example.com:4374/telnettelnet example.com 4374bash(echo > /dev/tcp/example.com/4374) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4374/tcpDeny
sudo ufw deny 4374/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 4374 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 4374 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4374/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4374" dir=in action=allow protocol=TCP localport=4374Security 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- Outdated versions with vulnerabilities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 4374/TCP?
Port 4374/TCP is associated with the psi-ptt service. PSI Push-to-Talk Protocol
Is it safe to expose port 4374 to the Internet?
It depends on the service and configuration. Port 4374 (psi-ptt) 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 4374 is open?
You can use nmap: `nmap -p 4374 -sV example.com`, netcat: `nc -zv example.com 4374`, or the bash command: `(echo > /dev/tcp/example.com/4374) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4374 on my firewall?
On Linux with UFW: `sudo ufw allow 4374/tcp` (open) or `sudo ufw deny 4374/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 4374 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4374" dir=in action=allow protocol=TCP localport=4374`.
What applications and services use port 4374?
Port 4374/TCP is used by the psi-ptt service. Specific uses depend on the software and configuration. Check our related tools section for more information.