All ports
Port545/TCP
appleqtcsrvrPort
545
Protocol
TCP
Category
Well-Known
Service
appleqtcsrvr
What is port 545?
Port 545/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the appleqtcsrvr service.
appleqtcsrvr
Useful commands
nmapnmap -p 545 -sV example.comnetcatnc -zv example.com 545curlcurl -v http://example.com:545/telnettelnet example.com 545bash(echo > /dev/tcp/example.com/545) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 545/tcpDeny
sudo ufw deny 545/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 545 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 545 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=545/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 545" dir=in action=allow protocol=TCP localport=545Security 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- Outdated versions with vulnerabilities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 545/TCP?
Port 545/TCP is associated with the appleqtcsrvr service. appleqtcsrvr
Is it safe to expose port 545 to the Internet?
It depends on the service and configuration. Port 545 (appleqtcsrvr) 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 545 is open?
You can use nmap: `nmap -p 545 -sV example.com`, netcat: `nc -zv example.com 545`, or the bash command: `(echo > /dev/tcp/example.com/545) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 545 on my firewall?
On Linux with UFW: `sudo ufw allow 545/tcp` (open) or `sudo ufw deny 545/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 545 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 545" dir=in action=allow protocol=TCP localport=545`.
What applications and services use port 545?
Port 545/TCP is used by the appleqtcsrvr service. Specific uses depend on the software and configuration. Check our related tools section for more information.