Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Troubleshooting

Laptops & DesktopsSecurityServers

Powershell – Remote Commands

OPTION 1 To run the `ipconfig /displaydns` command on a remote PC named “pc-kcordero” in a Windows environment, you can...
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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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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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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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Servers

Powershell – Get HTTP(S) Status Code

(Invoke-WebRequest -Uri https://www.cisco.com -Method Get).StatusCode This command sends a GET request to the specified URL and then returns the HTTP...
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Laptops & DesktopsSecurityServers

Curl – Test TLS and HTTP versions

To test TLS versions and HTTP versions using CURL, you can specify the desired TLS and HTTP versions using the...
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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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Laptops & DesktopsServers

Find DNS TTL on Windows and MacOS

Sure, here’s how you can find the Time to Live (TTL) for a DNS record on Windows and MacOS. Please...
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Laptops & DesktopsLoad BalancingServers

F5 – HTTP(S) Status Code Verification

DO YOU HAVE TO HAVE SSL OFFLOAD TO GET STATUS CODE SSL offloading, often performed by a load balancer or...
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CodeLoad Balancing

Python – FQDN Scanner

# Author: Kerry Cordero # Version: 1.0.0 # Description: This script will scan an FQDN file, and based on the...
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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

  • 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 LAG 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 TCP TLS Troubleshooting Upgrade VMWare
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