Jan 28Virtual LANA Virtual LAN (VLAN) is a logical grouping of network devices that allows for communication as if they were on the same physical network segment, regardless of their actual physical location. …Vlan3 min readVlan3 min read
Jan 28Router as DHCP & DNS ServerA router is the gateway to the Internet. Routers are often used as a DHCP (Dynamic Host Configuration Protocol) server and DNS Server in a home network. Router as DHCP server Routers are set as the DHCP server in a LAN because routers typically connect multiple devices to a network and manage their communication…DNS3 min readDNS3 min read
Jan 28Web ServerA web server is a software or hardware system that processes requests via HTTP (Hypertext Transfer Protocol), the foundation of the web. It is responsible for delivering web pages and other content to clients (typically web browsers) when they make requests to a server. The server responds to these requests…3 min read3 min read
Jan 28FTP serverFTP (File Transfer Protocol) is a standard network protocol that transfers files from one host to another over a TCP-based network, such as the Internet. FTP is a client-server protocol where a client initiates a connection to a server and then can upload or download files to/from the server. FTP…Ftp2 min readFtp2 min read
Oct 28, 2020[Cybersecurity Series] Caeser CipherSimplest way to encrypt & decrypt ASCII texts — So, here’s the SECRET to a good Caeser salad — add some avocados. But this is not a food blog, so let’s talk about some ancient ciphers used in cryptography instead. Substitution Cipher A substitution cipher protect the data confidentiality by swapping the original characters to another random character in any text…Caeser4 min readCaeser4 min read
Sep 17, 2020UCCN1004 Data Communications and NetworkingGet your FA questions here Use your 1UTAR Google Account -> DOWNLOAD HEREUccn10041 min readUccn10041 min read
Jun 4, 2020Remote Login with SSHNow everyone can work from home, securely (Part2/3) — Introduction Remote login allows users to connect to servers that are located in different networks from their local machine. …Ssh7 min readSsh7 min read
Jun 3, 2020Remote Login with TelnetNow everyone can work anywhere — Part1/3 — Introduction My work shift starts at 8.30am, and I wake up 7.30am daily; so you can guess that I have one hour to get ready. Yet somehow I am always, still late to work. — Don’t get me wrong, I have a cosy office that make me feel less blue on…Telnet5 min readTelnet5 min read
May 28, 2020Ping (ICMP)Hello, are you there? — Introduction Ping is a network utility to check network connectivity to a target destination. Ping is built-in on Windows, Linux and MAC OS. Ping operates based on the Internet Control Message Protocol (ICMP). It is commonly used to find out whether a destination host is reachable or not. Intuition In this quarantine…Ping8 min readPing8 min read
May 28, 2020UCCN1004 Data Communications & NetworkingThe Definitive List to All the Materials You Need to Get an A — Follow me onUccn10042 min readUccn10042 min read
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