Kerry CorderoKISS IT Design Principle - Human Error Prevention
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API 101

What’s an API? API stands for Application Programming Interface. It’s a set of rules and protocols for building and interacting...
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Business ManagementCloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

The Crucial Role of Vendor Relationships in IT Infrastructure Management

In a landscape as interconnected as Information Technology, the adage by John C. Maxwell, “Teamwork makes the dream work…” perfectly...
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Powershell – Find AD Active Users Password Expirations

Find Active Users with PW Expires Date/Time: Import-Module ActiveDirectory Get-ADUser -SearchBase "DC=cordero,DC=me" -filter {Enabled -eq $True -and PasswordNeverExpires -eq $False}...
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CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Evaluating IT Network Costs: OpEx, CapEx, and TCO

Cost consideration is an essential aspect when designing and implementing network architecture. Here, we delve into the three primary components...
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Streamline API Testing with .http Files in Visual Studio Code

If you’re a developer working with APIs, web services, or any HTTP-based communication, having a reliable and efficient way to...
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Python – MX Scanner

# Author: Kerry Cordero # Version: 1.0.0 # Description: This script will look at a file called "mx-records.txt" and run...
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CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Certificate Chains

HOW CERTIFICATE CHAINS WORK Certificate chains, also known as a chain of trust, work on the concept of Public Key...
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Python – IP Location and Subnet Scanner

This script was developed to address a specific scenario where vendors provide a range of IP subnets to be whitelisted....
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CodeServers

DNS Root (Apex) ANAME Records NOT CNAME Records

ANAME (Alias Name) records are a type of DNS record that allows you to alias one hostname to another, similar...
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Python – Fix SSL Certificate Verified Failed

ERROR Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘SSLError(SSLCertVerificationError(1, ‘[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate...
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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 Microsoft IIS Microsoft SQL Microsoft Windows Netflow OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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