Quick Guide to Check DNS Cache
The primary purpose of DNS cache is to store the location of web servers that we have recently accessed. The next time when we type in that website address, the browser will look for its DNS information in the local…
Category Linux
Understanding DNS records with Examples
DNS is short for Domain Name System. It is simply a database that links meaningful names (known as hostnames), such as www.howtouselinux.com, to a specific IP address, such as 185.230.63.171. Each device connected to the Internet has a unique IP…
Exploring EDNS with Examples
EDNS stands for Extended DNS. EDNS gives us a mechanism to send DNS data in larger packets over UDP. The most popular implementation of EDNS is DNSSEC. History of EDNS Traditional DNS responses are typically small in size (less than…
Check DNS TXT Record with dig Command in Linux
A TXT record (short for text record) is a type of resource record in DNS. It is used to store descriptive text for the domain name. This type of record can be used to provide additional information about your domain,…
20 Advanced Linux Find Command Examples
Linux find command is a powerful tool that can be used to locate and manage files and directories based on a wide range of search criteria. This means that we can provide it with a set of directories (or files)…
Exploring DNS Port with Examples
DNS port is confusing for many people. In this article, we’ll describe how DNS works, and what DNS port numbers are used for DNS protocol. Port Usage TCP port 53: Large DNS responses (TCP is used when the DNS response…
Understanding TCP Connection with Examples
TCP is defined as a connection-oriented and reliable protocol. We will check out how TCP connection works in this article. How TCP Connection Works? TCP allows for the transmission of information in both directions. This means that computer systems that…
TCP vs UDP – 10 Differences between TCP and UDP
TCP vs UDP – Acronym TCP vs UDP – Connection TCP vs UDP – Protocols TCP vs UDP – Packet Order Packets are carried over Internet Protocol (IP), which pays no attention to packet order. TCP vs…
Understanding TCP Sequence Number with Examples
TCP Sequence Number is a 4-byte field in the TCP header that indicates the first byte of the outgoing segment. It helps to keep track of how much data has been transferred and received. The TCP Sequence Number field is…
Understanding TCP Socket With Examples
TCP socket is a fundamental concept in the operation of TCP/IP application world. We will deep dive into the details of how the TCP socket works. Network Socket For example, if we have a website running on IP address 100.1.1.1,…