All ports
Port8953/TCP
ub-dns-controlPort
8953
Protocol
TCP
Category
Registered
Service
ub-dns-control
What is port 8953?
Port 8953/TCP is a Registered port, registered with IANA for specific applications. It is associated with the ub-dns-control service.
unbound dns nameserver control
Useful commands
nmapnmap -p 8953 -sV example.comnetcatnc -zv example.com 8953curlcurl -v http://example.com:8953/telnettelnet example.com 8953bash(echo > /dev/tcp/example.com/8953) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 8953/tcpDeny
sudo ufw deny 8953/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 8953 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 8953 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=8953/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 8953" dir=in action=allow protocol=TCP localport=8953Security Risks
- DNS cache poisoning attacks
- DDoS amplification using open DNS resolvers
- Information disclosure of internal subdomains
- Domain hijacking if DNS server is misconfigured
Frequently Asked Questions
What service runs on port 8953/TCP?
Port 8953/TCP is associated with the ub-dns-control service. unbound dns nameserver control
Is it safe to expose port 8953 to the Internet?
It depends on the service and configuration. Port 8953 (ub-dns-control) 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 8953 is open?
You can use nmap: `nmap -p 8953 -sV example.com`, netcat: `nc -zv example.com 8953`, or the bash command: `(echo > /dev/tcp/example.com/8953) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 8953 on my firewall?
On Linux with UFW: `sudo ufw allow 8953/tcp` (open) or `sudo ufw deny 8953/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 8953 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 8953" dir=in action=allow protocol=TCP localport=8953`.
What applications and services use port 8953?
Port 8953/TCP is used by the ub-dns-control service. Specific uses depend on the software and configuration. Check our related tools section for more information.