Answer:
To perform a port scan with nmap and identify all the open ports on the server (192.168.0.45), follow these steps:
1. Install nmap: If you don't have nmap installed on your system, download and install it from the official nmap website. It is available for various operating systems.
2. Open a terminal or command prompt: Launch the terminal or command prompt on your system. This is where you will enter the nmap commands.
3. Run the port scan command: Use the following command to perform a port scan on the specified server IP address:
```
nmap 192.168.0.45
```
4. Wait for the scan to complete: Nmap will start scanning the target IP address for open ports. The duration of the scan depends on the network and the number of ports being scanned.
5. Review the scan results: Once the scan is complete, nmap will display a list of open ports and their corresponding services. The open ports indicate potential entry points for attackers. Take note of the open ports for further analysis and consideration.
It's important to note that port scanning without proper authorization may be illegal or violate ethical guidelines. Make sure you have the necessary permissions and follow the company's policies before performing any security-related activities.
Additionally, after identifying the open ports, it is crucial to address any vulnerabilities or secure the exposed services to prevent potential unauthorized access or attacks. This can involve applying security patches, implementing access controls, or configuring firewalls to restrict access to the open ports.
By conducting regular port scans and addressing any identified vulnerabilities, you can enhance the security of the company's database server and protect sensitive financial and accounting systems.