All ports
Port5221/TCP
3exmpPort
5221
Protocol
TCP
Category
Registered
Service
3exmp
What is port 5221?
Port 5221/TCP is a Registered port, registered with IANA for specific applications. It is associated with the 3exmp service.
3eTI Extensible Management Protocol for OAMP
Useful commands
nmapnmap -p 5221 -sV example.comnetcatnc -zv example.com 5221curlcurl -v http://example.com:5221/telnettelnet example.com 5221bash(echo > /dev/tcp/example.com/5221) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 5221/tcpDeny
sudo ufw deny 5221/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 5221 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 5221 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=5221/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 5221" dir=in action=allow protocol=TCP localport=5221Security 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- Outdated versions with vulnerabilities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 5221/TCP?
Port 5221/TCP is associated with the 3exmp service. 3eTI Extensible Management Protocol for OAMP
Is it safe to expose port 5221 to the Internet?
It depends on the service and configuration. Port 5221 (3exmp) 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 5221 is open?
You can use nmap: `nmap -p 5221 -sV example.com`, netcat: `nc -zv example.com 5221`, or the bash command: `(echo > /dev/tcp/example.com/5221) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 5221 on my firewall?
On Linux with UFW: `sudo ufw allow 5221/tcp` (open) or `sudo ufw deny 5221/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 5221 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 5221" dir=in action=allow protocol=TCP localport=5221`.
What applications and services use port 5221?
Port 5221/TCP is used by the 3exmp service. Specific uses depend on the software and configuration. Check our related tools section for more information.