DNS

What is the ‘nslookup’ command, and how can I use it?

Networking and Computing Tips and Tricks / By

Post Views: 6,000 The nslookup command is a built-in network administration tool available on Windows, macOS, and many Linux distributions. It is used to query DNS servers to retrieve information about domain names, IP addresses, and DNS records. Basic Syntax: nslookup [hostname] [DNS server] Components: Common Use Cases: Example Output: Query a Domain: nslookup example.com […]

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What is the ‘dig’ command, and how can I use it?

Networking and Computing Tips and Tricks / By

Post Views: 11,411 The dig command, short for “Domain Information Groper,” in Linux or MacOS is a command-line tool used to query Domain Name System (DNS) servers. The command is a lot like nslookup, but at the same time it is different. If you are a Windows user, you have to use nslookup. For a

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Testing/Baselining DNS Server Performance

Networking and Computing Tips and Tricks / By

Post Views: 2,088 As a follow on to our DNS In Depth article, we wanted to provide a reference to a great tool. One of the important impacts to how fast the Internet works for users is how fast the Domain Name Service responds to database requests.  For example, if you type www.cellstream.com into your URL

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A Wireshark DNS Configuration Profile

Networking and Computing Tips and Tricks / By

Post Views: 6,492 For those of you who love Wireshark and are needing to analyze DNS Queries and Responses, we have the profile for you. Profiles are one of the most important Wireshark capabilities.  Setting up and using different profiles for different environments, protocols, and tasks is a crucial skill that we teach in our

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Using a Dynamic DNS Service Instead of a Public IP

Networking and Computing Tips and Tricks / By

Post Views: 1,148 If you have a web/email server connected to the Internet that you want other to reach, that server must have a public IP address.  Most Internet users don’t even try to remember the IP addresses of sites they use, instead they use the Universal Resource Locator system of typing www.cellstream.com or something

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