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 …
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AAAA records, also known as “quad-A” records, are a type of DNS record used to map domain names to IPv6 addresses. They are similar to A records, which are used to map domain names to IPv4 addresses, but are designed specifically for IPv6 addresses. IPv6 addresses are four times larger than IPv4 and contain 8 …
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 …
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 …
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. …
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 …
DNS propagation is the time for DNS record updates to take effect on all servers. DNS Changes are not instant because nameservers cache domain record information for a specific duration before refreshing. Some users may still be served a cached version of our site until all servers have completed propagation. DNS Propagation Time So, how …
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 …
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 …
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 …