Bind what is recursion

Ask Question. Asked 4 years, 11 months ago. Active 4 years, 11 months ago. Viewed 5k times. However it complains, that recursion is not available. But I did not requsted it. How could one solve this problem? Improve this question. Bulat M. I think your second forwarder should be 8. Add a comment. Active Oldest Votes. Afterwards, keep an eye on the server logs while you set up your client machine to make sure that everything goes smoothly. Leave this running on the server:.

Now that you have your server up and running, you can configure your client machine to use this DNS server for queries. Log into your client machine. Otherwise the DNS server will refuse to serve requests for the client. Changes made here will only last until reboot, which is great for testing. If we are satisfied with the results of our tests, we can make these changes permanent. The file will list the DNS servers to use to resolve queries by setting the nameserver directives. Comment out all of the current entries and add a nameserver line that points to your DNS server:.

We can get more detailed information by using DNS specific tools like dig. Try a different domain this time:. You can see that the query took 36 milliseconds.

If we make the request again, the server should pull the data from its cache, decreasing the response time:. We can also test the reverse lookup by using the IP address that we found Back on your DNS server, you should see if any errors have been recorded during your tests. One common error that may show up looks like this:. These indicate that the server is trying to resolve IPv6 information but that the server is not configured for IPv6.

You can fix this issue by telling Bind to only use IPv4. To make the changes last, we need to modify the files that are used to generate this file. Look for the dns-nameservers parameter. You can remove the existing entries and replace them with your DNS server or just add your DNS server as one of the options:. Next time you boot up, your settings will be applied. Inside, look for the lines that begin with DNS. Your client should use those settings at next boot. You should now have either a caching or forwarding DNS server configured to serve your clients.

This can be a great way to speed up DNS queries for the machines you are managing. If you want to create a DNS server that is authoritative for your own domain zones, you can configure an authoritative-only DNS server or combine these solutions.

DNS, or the domain name system, is an essential component of modern internet communication. It allows us to reference computers by names instead of IP addresses. In this series, we will cover the basic ideas behind DNS so that you feel comfortable working with it.

Afterwards, we will walk through various ways that you can gain greater control over your domains and DNS resolution. Where would you like to share this to? Twitter Reddit Hacker News Facebook.

Share link Tutorial share link. Sign Up. DigitalOcean home. The -g option will make our named run in the foreground and the -c option is for us to specify the location of our configuration file.

You now have a running recursive DNS server. While named is running in the foreground, you can open another terminal and try to resolve unixcop. Now it is time to make our named to run automatically during boot time. Exit the vi text editor using the command :wq to save the code into the named script.

You have just created a simple FreeBSD rc script. We may need to enhance this script over time in our future articles, but for now, this works great already. Now that we have the rc script ready, you need to add the following lines into the FreeBSD rc. The whole rc. Save the changes by typing :wq command in vi and exit from the text editor. When you reboot your system, named will now automatically start.

Save my name, email, and website in this browser for the next time I comment. All rights reserved. We started this blog to make a difference in Unix Linux blogs world and we promise to Post the best we can and we will invite the best Admins and developers to post their work here. Sign in. Forgot your password? Get help. Privacy Policy. Password recovery. Running our Recursive DNS Server Let us try to run named with -g and -c options so we can check if there are errors in our configuration.

ISC , a non-profit c 3 public-benefit Jun Running named Automatically During Boot-Time Now it is time to make our named to run automatically during boot time.

Let us change the permission of the script and make it executable. You now have your own recursive DNS server! See also fetch-glue above. As for the second question, I believe the answer is no -- you simply don't include the recursion option in your named.

If you enable it to no, I believe that trumps anything in allow-recursion. As for the interaction between the 2 options, the former controls whether the server will perform recursive queries on behalf of clients sending them while the latter restricts who can make said queries if recursion is enabled. Experiment indicates that is right, but the ARM isn't all that clear on the subject.