Kerry CorderoPractical Network Engineering Notes
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NTP Master Class The Definitive Guide for Cisco Enterprise Networks (IOS-XE, NX-OS & ISE)

This guide covers Network Time Protocol from fundamentals through enterprise time architecture: stratum hierarchy design, GPS/GNSS time sources, authenticated and...
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AICloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

A Network Architect’s Guide to Technical Debt

Technical Debt in the Age of AI In infrastructure and networking, “technical debt” is often treated like a moral issue:...
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Laptops & DesktopsServers

DNS Troubleshooting Guide

  Core Concepts of DNS Before diving into troubleshooting, a quick review of key concepts is helpful: DNS Resolver: The...
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Servers

IISRESET vs. Recycling Application Pool

IISRESET: When you run iisreset, this happens: Stops all IIS services: This includes the IIS Admin Service, the Windows Process...
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Laptops & DesktopsSecurityServers

Strengthening TLS Security: Why Strong Ciphers Should Be Non-Negotiable

In today’s digital landscape, securing data in transit is a critical priority for any organization. The Transport Layer Security (TLS)...
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Data CenterLaptops & DesktopsRouting & SwitchingServers

Spanning Tree Master Class for Cisco Enterprise Networks

The Definitive Guide for Cisco Enterprise Networks (IOS-XE & NX-OS) This guide covers Spanning Tree Protocol from first principles through...
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Servers

HTTP Status Code and IIS Configuration Troubleshooting Guide

HTTP Status Codes are three-digit numbers returned by a web server (like IIS) in response to an HTTP request from...
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Laptops & DesktopsServers

DNS, SFTP, and FTPS: Why Firewalls Handle These Protocols Differently

1. DNS Resolution and Protocol Handling Both HTTPS and SFTP require DNS resolution if a domain name (FQDN) is used:...
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Laptops & DesktopsRouting & SwitchingSecurityServers

Using Chrome’s Net Export Tool for Network Diagnostics

As network engineers, we often find ourselves at the crossroads of application and infrastructure troubleshooting. While packet captures and network...
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Laptops & DesktopsSecurityServers

Understanding and Configuring TLS Versions in a Windows Environment

Transport Layer Security (TLS) is a critical cryptographic protocol designed to secure communications over computer networks. As cyber threats evolve,...
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  • Home
  • About
  • Disclaimer
  • Guides and Slides
    • AWS Well-Architected Framework
    • Facebook – Running BGP in the Data Center at Scale
    • Microsoft – Experiences with BGP in Large Scale Data Centers
    • Palo Alto PCNSE Study Guide
  • Tools
    • Car Calculator
    • RouteAgg
    • IP Calculator
    • VSLM
  • Links
  • Contact

Categories

  • AI
  • Business Management
  • Cloud
  • Code
  • Data Center
  • Laptops & Desktops
  • Load Balancing
  • Routing & Switching
  • Security
  • Servers
  • Uncategorized
  • VOIP
  • Wireless

Tags

Active Directory (AD) AWS Best Practices BGP Certificates Cisco Cisco ACI Cisco ASA Cisco ASR Cisco Catalyst Cisco CLI Cisco ISE Cisco Nexus Cisco Stack DDOS Design DNS EIGRP F5 HTTP(S) IP Addressing and Subnetting Microsoft IIS Microsoft SQL Microsoft Windows Netflow OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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