TCP Open Port Scanner

Quickly find out what ports are open on public Internet-facing IP or website

About Scanning TCP Open Ports

How to Check for Open Ports?

Geekflare’s TCP Open Port Scanner gives you the abilities of one of the best open-source port scanning tools: Nmap.

But a significant downside with Nmap is its terminal-centric user interface.

Filling in the gaps, Geekflare’s port scanning tool gives you the power of Nmap with a user-friendly graphical interface.

What are Open Ports?

The internet communicates through open or listening ports.

These are the gateways for specific tasks such as the SSH service runs on port 22, the HTTP service makes use of port 80 (although the browsers hide this fact from you), while the HTTPS service operates on port 443, etc.

Closing all the open ports on a server is stupid. It’s like blocking out that specific server from all of the internet. Instead, what’s recommended is closing open ports which aren’t in active use.

Are all Open Ports Vulnerable?

The short answer is no. Open ports are only dangerous when the receiving end is misconfigured or can be exploited over security loopholes.

For instance, the WannaCry ransomware attack started due to an exposed and insecure SMB port running on outdated MS Windows.

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