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Laptops & DesktopsRouting & SwitchingSecurityServers

Data Flow – CURL and HTTPS

Let’s go through the steps and data flow when using `curl` to make an HTTPS request and check for an...
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Laptops & DesktopsRouting & SwitchingServers

Data Flow – Laptop to Server Communication

The communication between a laptop and a server within a network involves a number of layers and protocols. Here’s a...
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Laptops & DesktopsServers

Data Flow – Windows AD DNS with Conditional Forwarders

Here’s a simplified breakdown of the data flow that occurs when a client computer in an Active Directory (AD) environment...
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Data CenterLaptops & DesktopsSecurityServers

DNS Authoritative vs Non-Authoritative (Recursive) and DNS Flows

DNS name servers are usually split into two categories:...
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Data CenterLaptops & DesktopsRouting & SwitchingServers

DNS Rewrite aka DNS Doctoring

DNS rewrite or DNS Doctoring has been around on the Cisco ASA’s for a while. Palo Alto firewalls received this...
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Laptops & DesktopsSecurityServers

Data Flow – HTTPS Traffic and Cipher Suites

Here’s a step-by-step breakdown of the data flow: DNS Resolution: The user enters “https://cordero.me” into their browser’s address bar. The...
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Laptops & DesktopsServers

Data Flow – DNS Resolution with AD and F5 BIG-IP DNS

1. Local Cache Check: You attempt to access a website (say, `app.lb.cordero.me`) on your Windows AD-managed laptop. Your operating system...
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Laptops & Desktops

Dell – Get Your System Service Tag Using Command Prompt

Go to your command prompt and type in “wmic bios get serialnumber” C:\>wmic bios get serialnumber SerialNumber C5Q###...
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Laptops & DesktopsServers

DNS Forwarders vs Conditional Forwarders

First, let’s talk about the difference between a zone and a domain. There are several distinct zones in the DNS,...
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Laptops & DesktopsServers

DNS Root (Apex) Domain vs Subdomain

In the context of DNS and websites, “cisco.com” and “www.cisco.com” are both domain names, but they have slightly different uses....
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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
  • IP Calculator
  • 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 Azure 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 macOS Microsoft IIS Microsoft SQL Microsoft Windows OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS Splunk SSL Storage Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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