All ports
Port1091/UDP
ff-smPort
1091
Protocol
UDP
Category
Registered
Service
ff-sm
What is port 1091?
Port 1091/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ff-sm service.
FF System Management
Useful commands
nmapnmap -p 1091 -sV example.comnetcatnc -zv example.com 1091curlcurl -v http://example.com:1091/telnettelnet example.com 1091bash(echo > /dev/udp/example.com/1091) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 1091/udpDeny
sudo ufw deny 1091/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 1091 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 1091 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=1091/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 1091" dir=in action=allow protocol=UDP localport=1091Security 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- Outdated versions with vulnerabilities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 1091/UDP?
Port 1091/UDP is associated with the ff-sm service. FF System Management
Is it safe to expose port 1091 to the Internet?
It depends on the service and configuration. Port 1091 (ff-sm) 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 1091 is open?
You can use nmap: `nmap -p 1091 -sV example.com`, netcat: `nc -zv example.com 1091`, or the bash command: `(echo > /dev/udp/example.com/1091) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 1091 on my firewall?
On Linux with UFW: `sudo ufw allow 1091/udp` (open) or `sudo ufw deny 1091/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 1091 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 1091" dir=in action=allow protocol=UDP localport=1091`.
What applications and services use port 1091?
Port 1091/UDP is used by the ff-sm service. Specific uses depend on the software and configuration. Check our related tools section for more information.