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Category: Networking

DNS Resolution Overview

December 24, 2022December 25, 2022

Learn how the DNS resolution process enables network communication. What is DNS? The Domain Name System (DNS) maps IP addresses to hosts connected to either the public or private internet …

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CISCO Basic Command

December 8, 2022December 8, 2022

Troubleshooting, Editing, Port #’s show ip interface brief (display interface designations, IP address and status) show ip route (display routing table) show vlan brief (on switch – show what VLANs …

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Cheat Sheet for Python free PDF download

October 15, 2022October 15, 2022

Basic Cheat sheet for Python free download Download Cheat sheet for Python

Network Security Basic

October 10, 2022October 10, 2022

Security devices and Technologies1-Router2-Swtiches3-Firewall (NGFW)4-Content Security Firewalls5-IPS6-VPN7-Logging and Monitoring8-ACS (Access control server)9-ISE10-WSA11-ESA Security Terminology Accept Anything that is valuable to organization (that is to be protected) Can include Property, People, …

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Cisco SDWAN: vEdge Router Factory Reset

October 5, 2022October 5, 2022

Sometimes you are reusing the vEdge device which is in invalid state on vManage but you didn’t removed any configurations on the vedge. The best way to reuse that device to …

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WhatsApp discloses critical vulnerability in older app versionsWhatsApp discloses critical vulnerability in older app versionsWhatsApp discloses critical vulnerability in older app versions

September 28, 2022November 20, 2022

The bug, which has been patched in newer versions of the app, would let an attacker execute malicious code after sending a specially crafted video call WhatsApp has published details …

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The Open System Interconnection (OSI) Model

June 17, 2022June 17, 2022

Layer Example Application Layer Telnet, SSH, FTP, SMTP, HTTP, NFS, SNMP Presentation Layer JPG, PNG, GIF, MPEG, ASCII, CSS, HTML Session Layer RPC, SCP, TLS Transport Layer TCP, UDP Network …

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ISE Personas

May 8, 2022May 8, 2022

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Cisco SD-WAN

April 23, 2022April 23, 2022

Cisco SD-WAN is a platform solution for resolving performance, scalability and management ofnetworks facing the transition into a cloud-based, mobile world. Cisco helps users remain visible acrossWAN while experiencing fast …

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CCNA Security 210-260 – Contents

April 17, 2022April 17, 2022

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