All ports
Port4086/UDP
ftsyncPort
4086
Protocol
UDP
Category
Registered
Service
ftsync
What is port 4086?
Port 4086/UDP is a Registered port, registered with IANA for specific applications. It is associated with the ftsync service.
Firewall/NAT state table synchronization
Useful commands
nmapnmap -p 4086 -sV example.comnetcatnc -zv example.com 4086curlcurl -v http://example.com:4086/telnettelnet example.com 4086bash(echo > /dev/udp/example.com/4086) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 4086/udpDeny
sudo ufw deny 4086/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 4086 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 4086 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=4086/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 4086" dir=in action=allow protocol=UDP localport=4086Security 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- Outdated versions with vulnerabilities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 4086/UDP?
Port 4086/UDP is associated with the ftsync service. Firewall/NAT state table synchronization
Is it safe to expose port 4086 to the Internet?
It depends on the service and configuration. Port 4086 (ftsync) 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 4086 is open?
You can use nmap: `nmap -p 4086 -sV example.com`, netcat: `nc -zv example.com 4086`, or the bash command: `(echo > /dev/udp/example.com/4086) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 4086 on my firewall?
On Linux with UFW: `sudo ufw allow 4086/udp` (open) or `sudo ufw deny 4086/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 4086 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 4086" dir=in action=allow protocol=UDP localport=4086`.
What applications and services use port 4086?
Port 4086/UDP is used by the ftsync service. Specific uses depend on the software and configuration. Check our related tools section for more information.