All ports
Port426/TCP
smartsdpPort
426
Protocol
TCP
Category
Well-Known
Service
smartsdp
What is port 426?
Port 426/TCP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the smartsdp service.
smartsdp
Useful commands
nmapnmap -p 426 -sV example.comnetcatnc -zv example.com 426curlcurl -v http://example.com:426/telnettelnet example.com 426bash(echo > /dev/tcp/example.com/426) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 426/tcpDeny
sudo ufw deny 426/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 426 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 426 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=426/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 426" dir=in action=allow protocol=TCP localport=426Security 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- Outdated versions with vulnerabilities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 426/TCP?
Port 426/TCP is associated with the smartsdp service. smartsdp
Is it safe to expose port 426 to the Internet?
It depends on the service and configuration. Port 426 (smartsdp) is a Well-Known 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 426 is open?
You can use nmap: `nmap -p 426 -sV example.com`, netcat: `nc -zv example.com 426`, or the bash command: `(echo > /dev/tcp/example.com/426) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 426 on my firewall?
On Linux with UFW: `sudo ufw allow 426/tcp` (open) or `sudo ufw deny 426/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 426 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 426" dir=in action=allow protocol=TCP localport=426`.
What applications and services use port 426?
Port 426/TCP is used by the smartsdp service. Specific uses depend on the software and configuration. Check our related tools section for more information.