All ports
Port5356/UDP
ms-smlbizPort
5356
Protocol
UDP
Category
Registered
Service
ms-smlbiz
What is port 5356?
Port 5356/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ms-smlbiz service.
Microsoft Small Business
Useful commands
nmapnmap -p 5356 -sV example.comnetcatnc -zv example.com 5356curlcurl -v http://example.com:5356/telnettelnet example.com 5356bash(echo > /dev/udp/example.com/5356) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 5356/udpDeny
sudo ufw deny 5356/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 5356 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 5356 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=5356/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 5356" dir=in action=allow protocol=UDP localport=5356Security 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- Outdated versions with vulnerabilities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 5356/UDP?
Port 5356/UDP is associated with the ms-smlbiz service. Microsoft Small Business
Is it safe to expose port 5356 to the Internet?
It depends on the service and configuration. Port 5356 (ms-smlbiz) 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 5356 is open?
You can use nmap: `nmap -p 5356 -sV example.com`, netcat: `nc -zv example.com 5356`, or the bash command: `(echo > /dev/udp/example.com/5356) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 5356 on my firewall?
On Linux with UFW: `sudo ufw allow 5356/udp` (open) or `sudo ufw deny 5356/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 5356 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 5356" dir=in action=allow protocol=UDP localport=5356`.
What applications and services use port 5356?
Port 5356/UDP is used by the ms-smlbiz service. Specific uses depend on the software and configuration. Check our related tools section for more information.