While Nmap is better for scanning, Netcat can perform a "banner grab."
Here’s a helpful post you can use or share about — a graphical wrapper for the classic Netcat tool. Netcat Gui 1.2
Because of its simplicity, it is often used to verify network connectivity between a PC and a console during the exploit process. While Nmap is better for scanning, Netcat can
Quickly set up a listener on a specific port to verify if traffic is reaching a machine without wrestling with complex CLI syntax. [1998-09-14 23:18:01] [User 3] who opened port 443 on proxy
[1998-09-14 23:18:01] [User 3] who opened port 443 on proxy? [1998-09-14 23:18:03] [User 7] not me. [1998-09-14 23:18:04] [User 12] 1.2 is alive.
The interface pops open—a sober gray window with clean, almost futuristic tabs: , Connector , Scanner , Relay . The port range input has spin buttons. The output window supports copy-paste. There’s even a Hex Dump toggle. It’s everything she wanted, and nothing she expected.