All ports
Port20049/UDP
nfsrdmaPort
20049
Protocol
UDP
Category
Registered
Service
nfsrdma
What is port 20049?
Port 20049/UDP is a Registered port, registered with IANA for specific applications. It is associated with the nfsrdma service.
Network File System (NFS) over RDMA
Useful commands
nmapnmap -p 20049 -sV example.comnetcatnc -zv example.com 20049curlcurl -v http://example.com:20049/telnettelnet example.com 20049bash(echo > /dev/udp/example.com/20049) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 20049/udpDeny
sudo ufw deny 20049/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 20049 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 20049 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=20049/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 20049" dir=in action=allow protocol=UDP localport=20049Security 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- Outdated versions with vulnerabilities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 20049/UDP?
Port 20049/UDP is associated with the nfsrdma service. Network File System (NFS) over RDMA
Is it safe to expose port 20049 to the Internet?
It depends on the service and configuration. Port 20049 (nfsrdma) 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 20049 is open?
You can use nmap: `nmap -p 20049 -sV example.com`, netcat: `nc -zv example.com 20049`, or the bash command: `(echo > /dev/udp/example.com/20049) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 20049 on my firewall?
On Linux with UFW: `sudo ufw allow 20049/udp` (open) or `sudo ufw deny 20049/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 20049 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 20049" dir=in action=allow protocol=UDP localport=20049`.
What applications and services use port 20049?
Port 20049/UDP is used by the nfsrdma service. Specific uses depend on the software and configuration. Check our related tools section for more information.