All ports
Port2011/UDP
servservPort
2011
Protocol
UDP
Category
Registered
Service
servserv
What is port 2011?
Port 2011/UDP is a Registered port, registered with IANA for specific applications. It is associated with the servserv service.
Useful commands
nmapnmap -p 2011 -sV example.comnetcatnc -zv example.com 2011curlcurl -v http://example.com:2011/telnettelnet example.com 2011bash(echo > /dev/udp/example.com/2011) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 2011/udpDeny
sudo ufw deny 2011/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 2011 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 2011 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=2011/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 2011" dir=in action=allow protocol=UDP localport=2011Security 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- Outdated versions with vulnerabilities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 2011/UDP?
Port 2011/UDP is associated with the servserv service. No detailed description is available in the IANA registry.
Is it safe to expose port 2011 to the Internet?
It depends on the service and configuration. Port 2011 (servserv) 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 2011 is open?
You can use nmap: `nmap -p 2011 -sV example.com`, netcat: `nc -zv example.com 2011`, or the bash command: `(echo > /dev/udp/example.com/2011) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 2011 on my firewall?
On Linux with UFW: `sudo ufw allow 2011/udp` (open) or `sudo ufw deny 2011/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 2011 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 2011" dir=in action=allow protocol=UDP localport=2011`.
What applications and services use port 2011?
Port 2011/UDP is used by the servserv service. Specific uses depend on the software and configuration. Check our related tools section for more information.