All ports
Port5543/TCP
qftest-licservePort
5543
Protocol
TCP
Category
Registered
Service
qftest-licserve
What is port 5543?
Port 5543/TCP is a Registered port, registered with IANA for specific applications. It is associated with the qftest-licserve service.
QF-Test License Server
Useful commands
nmapnmap -p 5543 -sV example.comnetcatnc -zv example.com 5543curlcurl -v http://example.com:5543/telnettelnet example.com 5543bash(echo > /dev/tcp/example.com/5543) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 5543/tcpDeny
sudo ufw deny 5543/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 5543 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 5543 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=5543/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 5543" dir=in action=allow protocol=TCP localport=5543Security 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- Outdated versions with vulnerabilities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 5543/TCP?
Port 5543/TCP is associated with the qftest-licserve service. QF-Test License Server
Is it safe to expose port 5543 to the Internet?
It depends on the service and configuration. Port 5543 (qftest-licserve) 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 5543 is open?
You can use nmap: `nmap -p 5543 -sV example.com`, netcat: `nc -zv example.com 5543`, or the bash command: `(echo > /dev/tcp/example.com/5543) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 5543 on my firewall?
On Linux with UFW: `sudo ufw allow 5543/tcp` (open) or `sudo ufw deny 5543/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 5543 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 5543" dir=in action=allow protocol=TCP localport=5543`.
What applications and services use port 5543?
Port 5543/TCP is used by the qftest-licserve service. Specific uses depend on the software and configuration. Check our related tools section for more information.