Address substitution for dns name via server

Started by jonybro, Mar 09, 2023, 04:10 AM

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jonybroTopic starter

I'm testing a web application that is running on a local server with the address 'localhost:5000'. I would like to replace this domain name with something more appealing, such as ''.
To showcase a prototype, I just want to add a touch of aesthetics. So, I edited the /etc/hosts file and included the line "localhost:5000". However, when I try to access the address, it doesn't lead anywhere. I receive an error message saying, "The IP address of the server could not be found for"
I would appreciate any hints or guidance to resolve this issue.


Please attempt accessing the web application by using the following:

Replace 'localhost:5000' with 'mishka-test-site'

Then, in your browser, enter the URL as:


If you encounter any issues or errors, please let me know.

Additionally, when working with web applications, it's always a good idea to ensure that the URLs are correctly formatted and functional. It can save time and prevent potential problems down the line.


You can find the name of your localhost in the /etc/hostname file. If you're looking for "a touch of aesthetics," you can use this name, as it can add a certain charm depending on how the hostname is chosen.
Renaming it shouldn't be a hassle either, especially with the help of netcfg. Feel free to explore different options and make your localhost even more personalized.

adding a unique and creative name to your localhost can bring a sense of fun and personality to your development environment. Enjoy the process of customizing it to reflect your own style!


It seems like you want to map the domain name '' to your local server running on 'localhost:5000'. However, modifying the '/etc/hosts' file alone might not be sufficient for this purpose. Here's what you can try:

1. Make sure your web application is running correctly on 'localhost:5000' before proceeding further.

2. Check if you have a DNS server set up. If not, you can manually set up a DNS resolver on your local machine, which involves configuring a DNS server locally to resolve the domain name.

3. Modify the '/etc/hosts' file again, but this time with only the IP address of 'localhost', without specifying any port number. The line should look like this: "".

4. Save the changes to the '/etc/hosts' file and ensure that there are no typos or extra characters in the domain name entry.

5. Clear the DNS cache on your machine. The method for doing this depends on your operating system. For example, on Windows, you can use the command "ipconfig /flushdns" in the Command Prompt. On macOS or Linux, you can use "sudo dscacheutil -flushcache" or "sudo service dns-clean restart", respectively.

6. Now, try accessing '' in your web browser and see if it resolves correctly to your local server.

If the previous steps didn't work, here are some additional troubleshooting tips you can try:

1. Verify that your web application is running on 'localhost:5000' and is accessible by visiting 'localhost:5000' directly in your web browser. This will help ensure that the issue is not with your web application itself.

2. Check if there are any firewall settings or security configurations that may be blocking access to the domain name. Temporarily disable any firewalls or security software to see if it allows access to ''.

3. If you have a router or network configuration in place, ensure that port 5000 is open and properly forwarded to your machine running the web server. This step may vary based on your specific router or network setup.

4. Test accessing your web application using the IP address of your machine instead of the domain name. For example, try accessing 'http://localhost:5000' or ''. If it works with the IP address but not with the domain name, there may be an issue with the DNS resolution.

5. Double-check the '/etc/hosts' file entries again to ensure there are no typos or formatting errors. Make sure that there are no leading or trailing spaces, and that the domain name entry is on a separate line.

6. If possible, try accessing the web application from a different machine or device on the same network to see if it resolves correctly. This can help identify if the issue is specific to your machine or network environment.

7. Consider using a local development tool or software that allows you to configure custom domain names for local testing, such as ngrok or localtunnel. These tools create temporary public URLs that map to your local server, eliminating the need for modifying host files.