All ports
Port377/TCP
tnETOSPort
377
Protocol
TCP
Category
Well-Known
Service
tnETOS
What is port 377?
Port 377/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the tnETOS service.
NEC Corporation
Useful commands
nmapnmap -p 377 -sV example.comnetcatnc -zv example.com 377curlcurl -v http://example.com:377/telnettelnet example.com 377bash(echo > /dev/tcp/example.com/377) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 377/tcpDeny
sudo ufw deny 377/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 377 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 377 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=377/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 377" dir=in action=allow protocol=TCP localport=377Security 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- Outdated versions with vulnerabilities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 377/TCP?
Port 377/TCP is associated with the tnETOS service. NEC Corporation
Is it safe to expose port 377 to the Internet?
It depends on the service and configuration. Port 377 (tnETOS) is a Well-Known 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 377 is open?
You can use nmap: `nmap -p 377 -sV example.com`, netcat: `nc -zv example.com 377`, or the bash command: `(echo > /dev/tcp/example.com/377) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 377 on my firewall?
On Linux with UFW: `sudo ufw allow 377/tcp` (open) or `sudo ufw deny 377/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 377 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 377" dir=in action=allow protocol=TCP localport=377`.
What applications and services use port 377?
Port 377/TCP is used by the tnETOS service. Specific uses depend on the software and configuration. Check our related tools section for more information.