All ports
Port26257/TCP
cockroachPort
26257
Protocol
TCP
Category
Registered
Service
cockroach
What is port 26257?
Port 26257/TCP is a Registered port, registered with IANA for specific applications. It is associated with the cockroach service.
CockroachDB
Useful commands
nmapnmap -p 26257 -sV example.comnetcatnc -zv example.com 26257curlcurl -v http://example.com:26257/telnettelnet example.com 26257bash(echo > /dev/tcp/example.com/26257) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 26257/tcpDeny
sudo ufw deny 26257/tcpiptablesAllow
sudo iptables -A INPUT -p tcp --dport 26257 -j ACCEPTDeny
sudo iptables -D INPUT -p tcp --dport 26257 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=26257/tcpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 26257" dir=in action=allow protocol=TCP localport=26257Security 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- Outdated versions with vulnerabilities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 26257/TCP?
Port 26257/TCP is associated with the cockroach service. CockroachDB
Is it safe to expose port 26257 to the Internet?
It depends on the service and configuration. Port 26257 (cockroach) 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 26257 is open?
You can use nmap: `nmap -p 26257 -sV example.com`, netcat: `nc -zv example.com 26257`, or the bash command: `(echo > /dev/tcp/example.com/26257) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 26257 on my firewall?
On Linux with UFW: `sudo ufw allow 26257/tcp` (open) or `sudo ufw deny 26257/tcp` (close). With iptables: `sudo iptables -A INPUT -p tcp --dport 26257 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 26257" dir=in action=allow protocol=TCP localport=26257`.
What applications and services use port 26257?
Port 26257/TCP is used by the cockroach service. Specific uses depend on the software and configuration. Check our related tools section for more information.