@GaganG

Basic Networking Commands

Feb 17 · 5 min read · Networking commands help us check internet connection, find IP addresses, and fix network problems. Below are some common commands and what they do. ARP Command arp -rThis clears the ARP cache. It removes saved IP and MAC address entries. arp -aThis ...

Cryptography Encryption Algorithms

Jan 24 · 8 min read · Caesar Cipher The Caesar Cipher in fact belongs to the oldest encrypting methods. The cipher involves the shifting of each letter in the plaintext by a certain number of places down or up within the alphabet. For instance, if the shifting number is 3...

Tips for public speaking and presentation

Nov 3, 2025 · 5 min read · I just completed a Linked Learning course by Laura Bergells on public speaking king and here are my notes for it. I highly recommend it to everyone to watch the videos and take the quiz. Public speaking notes Who are my audience, do research on audie...

Common tools for reconnaissance

Oct 28, 2025 · 1 min read · The harvester It collects public information about target domain sudo apt install theharvester restfulHarvest -h Exiftool sudo apt install libimage-exiftool-perl This gets the metadata of the image. exiftool -ext jpg -r /path/to/dir searches for...

Notes on different Cisco operating systems and their uses

Aug 21, 2025 · 5 min read · There are different operating systems for different environments. Cisco IOS XE Software: OS commonly used in enterprise networks. Supports features important for programmability and high availability, making it ideal for business applications. C...