All ports
Port9208/UDP
rjcdb-vcardsPort
9208
Protocol
UDP
Category
Registered
Service
rjcdb-vcards
What is port 9208?
Port 9208/UDP is a Registered port, registered with IANA for specific applications. It is associated with the rjcdb-vcards service.
rjcdb vCard
Useful commands
nmapnmap -p 9208 -sV example.comnetcatnc -zv example.com 9208curlcurl -v http://example.com:9208/telnettelnet example.com 9208bash(echo > /dev/udp/example.com/9208) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 9208/udpDeny
sudo ufw deny 9208/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 9208 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 9208 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=9208/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 9208" dir=in action=allow protocol=UDP localport=9208Security 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- Outdated versions with vulnerabilities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 9208/UDP?
Port 9208/UDP is associated with the rjcdb-vcards service. rjcdb vCard
Is it safe to expose port 9208 to the Internet?
It depends on the service and configuration. Port 9208 (rjcdb-vcards) 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 9208 is open?
You can use nmap: `nmap -p 9208 -sV example.com`, netcat: `nc -zv example.com 9208`, or the bash command: `(echo > /dev/udp/example.com/9208) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 9208 on my firewall?
On Linux with UFW: `sudo ufw allow 9208/udp` (open) or `sudo ufw deny 9208/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 9208 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 9208" dir=in action=allow protocol=UDP localport=9208`.
What applications and services use port 9208?
Port 9208/UDP is used by the rjcdb-vcards service. Specific uses depend on the software and configuration. Check our related tools section for more information.