All ports
Port7901/TCP
tnos-spPort
7901
Protocol
TCP
Category
Registered
Service
tnos-sp
What is port 7901?
Port 7901/TCP is a Registered port, registered with IANA for specific applications. It is associated with the tnos-sp service.
TNOS Service Protocol
Useful commands
nmapnmap -p 7901 -sV example.comnetcatnc -zv example.com 7901curlcurl -v http://example.com:7901/telnettelnet example.com 7901bash(echo > /dev/tcp/example.com/7901) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 7901/tcpDeny
sudo ufw deny 7901/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 7901 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 7901 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=7901/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 7901" dir=in action=allow protocol=TCP localport=7901Security 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- Outdated versions with vulnerabilities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 7901/TCP?
Port 7901/TCP is associated with the tnos-sp service. TNOS Service Protocol
Is it safe to expose port 7901 to the Internet?
It depends on the service and configuration. Port 7901 (tnos-sp) 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 7901 is open?
You can use nmap: `nmap -p 7901 -sV example.com`, netcat: `nc -zv example.com 7901`, or the bash command: `(echo > /dev/tcp/example.com/7901) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 7901 on my firewall?
On Linux with UFW: `sudo ufw allow 7901/tcp` (open) or `sudo ufw deny 7901/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 7901 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 7901" dir=in action=allow protocol=TCP localport=7901`.
What applications and services use port 7901?
Port 7901/TCP is used by the tnos-sp service. Specific uses depend on the software and configuration. Check our related tools section for more information.