Kerry CorderoKISS IT Design Principle - Human Error Prevention
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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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Code

Python – Simple DNS Lookup Tool

# Author: Kerry Cordero # Version: 1.0.0 # Description: This script prompts for the IP/FQDN, Record Type, DNS Server to...
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Laptops & DesktopsRouting & SwitchingSecurity

Windows File Transfer Options

Transferring files from a Windows server/pc/laptop to a file share can be achieved by several means. The fastest method, however,...
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Routing & Switching

Prefix-Lists Operators (lt, le, gt, ge)

The less than (lt), less than or equal to (le), greater than (gt), and greater than or equal to (ge)...
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Routing & Switching

Planning – IP Subnets

Creating a scalable and effective IP address scheme is crucial for network administration. This ensures the network is organized, scalable,...
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Laptops & DesktopsServers

Powershell – Test if Port is Open or Closed

Test-NetConnection -ComputerName remote-server -Port port  or Test-NetConnection -ComputerName qa-api.cordero.me -Port 443...
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Data Center

Design – Data Center Clos Architecture (Fabric Spine and Leaf)

What is Clos? and how does it relate to Cisco DC Design? The Leaf-and-Spine architecture (also known as a Clos...
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Routing & Switching

BGP 101

Introduction The Border Gateway Protocol (BGP) uses a path-vector routing algorithm to exchange routing information between BGP speakers. The routing...
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Routing & Switching

Cisco Netflow v9

NetFlow is a network protocol developed by Cisco for collecting IP traffic information and monitoring network traffic. By analyzing flow...
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CodeLaptops & DesktopsServers

Powershell – Explicitly Check the Enabled SSL-TLS Protocols WinHTTP

# Author: Kerry Cordero # Version: 1.0.0 # Description: This script will check the Enabled SSL-TLS Protocols WinHTTP $Protocols =...
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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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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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