All ports
Port4554/UDP
msfrsPort
4554
Protocol
UDP
Category
Registered
Service
msfrs
What is port 4554?
Port 4554/UDP is a Registered port, registered with IANA for specific applications. It is associated with the msfrs service.
MS FRS Replication
Useful commands
nmapnmap -p 4554 -sV example.comnetcatnc -zv example.com 4554curlcurl -v http://example.com:4554/telnettelnet example.com 4554bash(echo > /dev/udp/example.com/4554) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4554/udpDeny
sudo ufw deny 4554/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4554 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4554 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4554/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4554" dir=in action=allow protocol=UDP localport=4554Security 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- Outdated versions with vulnerabilities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 4554/UDP?
Port 4554/UDP is associated with the msfrs service. MS FRS Replication
Is it safe to expose port 4554 to the Internet?
It depends on the service and configuration. Port 4554 (msfrs) 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 4554 is open?
You can use nmap: `nmap -p 4554 -sV example.com`, netcat: `nc -zv example.com 4554`, or the bash command: `(echo > /dev/udp/example.com/4554) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4554 on my firewall?
On Linux with UFW: `sudo ufw allow 4554/udp` (open) or `sudo ufw deny 4554/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4554 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4554" dir=in action=allow protocol=UDP localport=4554`.
What applications and services use port 4554?
Port 4554/UDP is used by the msfrs service. Specific uses depend on the software and configuration. Check our related tools section for more information.