Cheapest SSL Certificate

An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates the identity of a website and encrypts information sent to the server using SSL technology. Encryption is the process of scrambling data into an undecipherable format that can only be returned to a readable format with the proper decryption key. How to choose […]

Understanding DNS AAAA Records with Examples

AAAA records are DNS records that use an IP address to connect a domain to a website. They are similar to A records, but AAAA records point to 128–bit/IPv6 addresses, instead of the IPv4 addresses used by A records IPv6 addresses are four times larger than IPv4 and contain 8 sets of numbers and letters […]

Understanding HTTPS Default Port number 443 with Examples

HTTPS is secure and is on port 443. Information that travels on port 443 is encrypted using Secure Sockets Layer (SSL) or its new version, Transport Layer Security (TLS). Using HTTPS also helps minimize an attack by a hacker by identifying open ports and then blocking access with a firewall. It is highly advisable to […]

How DNS MX lookup Works?

MX Lookup means to perform the MX Record Lookup in the DNS. It is used to check the MX Record to find the internal & external mail servers for a particular domain. MX Record The DNS MX record is a DNS record that routes the email to the correct email server. The MX record tells […]

How TCP connection works

This post describes how to see TCP connection establishment and termination as packets using tcpdump on linux. Preparing Install the following commands on our linux. tcpdump nc telnet netstat Start a TCP connection establishment Start TCP connection using nc command with l,k option. Open another terminal and verify 12345 port is listening using netstat command. […]

6 Useful Tcp Port Numbers in Linux

In networking, a port is a virtual place on a machine that is open to connections from other machines. Every networked computer has a standard number of ports, and each port is reserved for certain types of communication. Think of ports for ships in a harbor: each shipping port is numbered, and different kinds of […]

3 Ways to Check DNS Propagation in Linux

DNS propagation is the time period in which it takes updates to DNS records to be in full effect across all servers on the web. The reason changes aren’t instantaneous is because nameservers store domain record information in their cache for a certain amount of time before they refresh. While our domain won’t experience any […]

CrazyGames – An Amazing Free Online Game Website

CrazyGames is a free online games website with more than 10 million active users monthly. The company was founded in 2014 by Tomas and Raf Mertens and has grown to 9 people. The platform features games ranging from 3D shooters to puzzle games. The most popular categories are driving games, clicker games, minecraft games, stickman […]

2 Ways to Perform Reverse DNS lookups in Linux

Reverse DNS lookup, also known as rDNS, is used to determine or resolve the IP address associated with the domain name. It is simply an entry that resolves an IP address back to a hostname. It is also called PTR record in DNS. Purpose of reverse DNS lookups Reverse DNS lookups are commonly used by […]

Check DNS A Record with Examples

DNS A record maps a domain name to the IP address (Version 4) of the server hosting the domain. The “A” stands for “address”. DNS A record indicates the IP address of a given domain. DNS A record is the most fundamental type of DNS record. It is one of the primary records used in […]