All ports
Port8999/UDP
bctpPort
8999
Protocol
UDP
Category
Registered
Service
bctp
What is port 8999?
Port 8999/UDP is a Registered port, registered with IANA for specific applications. It is associated with the bctp service.
Brodos Crypto Trade Protocol
Useful commands
nmapnmap -p 8999 -sV example.comnetcatnc -zv example.com 8999curlcurl -v http://example.com:8999/telnettelnet example.com 8999bash(echo > /dev/udp/example.com/8999) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 8999/udpDeny
sudo ufw deny 8999/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 8999 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 8999 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=8999/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 8999" dir=in action=allow protocol=UDP localport=8999Security 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- Outdated versions with vulnerabilities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 8999/UDP?
Port 8999/UDP is associated with the bctp service. Brodos Crypto Trade Protocol
Is it safe to expose port 8999 to the Internet?
It depends on the service and configuration. Port 8999 (bctp) 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 8999 is open?
You can use nmap: `nmap -p 8999 -sV example.com`, netcat: `nc -zv example.com 8999`, or the bash command: `(echo > /dev/udp/example.com/8999) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 8999 on my firewall?
On Linux with UFW: `sudo ufw allow 8999/udp` (open) or `sudo ufw deny 8999/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 8999 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 8999" dir=in action=allow protocol=UDP localport=8999`.
What applications and services use port 8999?
Port 8999/UDP is used by the bctp service. Specific uses depend on the software and configuration. Check our related tools section for more information.