How to troubleshoot DNS issues Linux & Windows

Learn how to troubleshoot DNS issues on Linux & Windows with Techdrive Support inc. Restore seamless browsing, adjust settings, and fix connectivity issues with professional assistance. Among the web of network connectivity, domain name system (DNS) is absolutely unreplaceable. This translates the human readable domain names into machine readable IP addresses making it offer perfect internet access. On the other hand DNS settings or server errors could lead to uncomfortable network problems such as;. This one-stop reference will enable you to successfully solve DNS problems relating to Linux and Windows computers.

Knowing DNS Basics

Before we venture into troubleshooting let us understand a tad bit about DNS. When you type a URL into your browser and the program looks for the right IP address, it views a DNS resolver. The IP address directs your browser to the right server to enable it download the contents you want.

Common DNS Issues and Indices

Several recurring DNS problems could jeopardize your online experience:
● DNS Resolution Issue: Unable to access websites or services.
● Slow Page Loading Times: The results also show that DNS search delays are the major factor that affects performance of website page.
● Bad Website Display: Historically, the following DNS settings may result in incorrect displayed page:
DNS problems might arise to affect the Email communication.

DNS troubleshooting commands Linux

Rich suite of commands-line tools for DNS troubleshooting provided by Linux systems:

1. NSlookup:

Syntactic: nsearch domain_name
Assists in making a query to identify a Web site by a given name by using DNS.
You have to type it in, like going to Google.com.

2. dig:

syntactic grammar: dig <domain_name>. [ options]
Use: versatile search aid and study resource when it comes to DNS research.
For instance, dig. Google.com +trace.

3. host:

Host; syntax: domain_name> DNS_server>
Use: tries to obtain a domain name of a specific DNS server.
For instance, instead of hosting one’s own website, host it at Google.com. E. 8.8.8.

4. Ping:

Syntactic: ping ip address
Diagnostic connectivity for a specified IP address: For this option, the tool will perfom network connectivity checks for the specified IP address.
ping 8.8.8.8, for instance.
The examples of DNS commands involving the use of Windows Retrieved 7th January from httpicalc: A Powerful and Flexible Windows Command-Line Calculator

DNS troubleshooting commands Windows

1. IP configuration

ipconfig /displaydns is syntax.
Take full advantage of the DNS resolving cache.
For instance: I was able to use the command ipconfig /flushdns to clear the cache.

2. nsearch:

Syntactic: nsearch domain name
How DNS works: A Windows client contacts a DNS server the same as going by the Linux variant.
For example: nssearch google.com.

3. ping:

This command is used to determine that the IP address of the specified network interface is appropriate or not.
Echo request is used also in the following example: Ping 8.8.8.8.

DNS Troubleshooting Tools

Many graphical applications, beyond command-line tools, can offer DNS troubleshooting:
Most browsers have a search function when it comes to DNS.
Information value can be attributed to Windows Network Diagnostics and Linux network utilities.
DNS Jumper is one of the specialist tools used to help in solving DNS problem and is being described below.
Contemporary Approaches to Diagnosing

Consider these progressive solutions for more challenging DNS problems:

Review DNS Server Setup: We should verify DNS servers in network settings.
 ● Examine the Firewall Guidelines: At other times, Firewall rules inhibit DNS traffic.
One can detect disturbing record or amount of problem messages, viewing DNS server logs.
Extensions for DNS security assist in increasing DNS security and Ife.
Remember DNS cache issues. This media is clear your DNS cache; When new records are created or existing ones are changed, it helps to update old information.

In summary

It is safe to say that fix ninety percent of DNS issues on both Linux and Windows if you understand the core principles of the DNS and the tips and tricks outlined in this course. Techdrive Support inc services are to provide complete IT services and among them is DNS debugging. If you have ongoing DNS issues, schedule a visit to any specialist.