Come pulire la DNS?

Clearing DNS Cache

To clear the DNS cache of your computer, follow these steps:

1. Open the Windows Start menu.
2. Search for "cmd".
3. Click on "Command Prompt" in the search results.
4. Select and run the command ipconfig /flushdns.

Clearing the DNS cache is useful for multiple reasons, including security. Malicious websites can access the DNS cache and discover the websites you visit. They can also redirect you to malicious websites without your knowledge.

Finding Router IP Addresses

To find the IP addresses of your router, you can:

• Ask, "What is the IP address of the router?" It is the set of numbers you see as the default gateway.
• Alternatively, you can find the router’s IP address using the Network and Sharing Center.

Modifying Router Settings

To access and modify the settings of a Fastweb router, use one of the following IP addresses: 192.168.0.1, 192.168.1.1, or 192.168.1.254.

Finding Private IP Address

To find your private IP address:

1. On the side of the window, select "Change Adapter Settings".
2. Right-click on the network adapter you are connected to the internet with.
3. Select "Status".
4. Click on "Details".
5. Check the IPv4 address. This is your private IP address.

Executing Traceroute

To execute a traceroute:

1. Click on Start.
2. Search for "cmd".
3. Right-click on "cmd.exe" and choose "Run as administrator".
4. Use the command tracert xx > c:tracert to create a traceroute file.
5. Close the prompt.

Reading Traceroute Results

To read the results of a traceroute, you can generally retrieve the following information:

• Number of hops.
• Round trip time (RTT) in milliseconds.

Benefits of Using Traceroute

An administrator can use the traceroute utility for various reasons, including:

• Identifying routers that are not being reached.
• Troubleshooting network issues.

Troubleshooting IP Address Issues

If you are unable to find the IP address, it could be due to:

• An issue with your Android phone.
• Unexpected wireless disturbances caused by changes in router security settings.
• Problems with the router.

Invalid IP Address

An invalid IP address means that the computer cannot receive a correct IP address. As a result, it cannot connect to a network or the internet. This error can be caused by various factors, including faulty network card drivers or incorrect network configuration.