Kerry CorderoPractical Network Engineering Notes
  • 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
    • IP Calculator
    • IP Calculator Slicer
    • IP Prefixlist LE GE Calculator
    • RouteAgg
    • Subnet Breakout
    • Time Zone Converter
    • VSLM
  • Links
  • Contact
  • See all results
Kerry Cordero
JoinedMay 2, 2023
Articles707
20+ years of experience and proven performance in large scale enterprise network infrastructure architecture, design, implementation, migration, security, operation, troubleshooting, leading/managing teams, and budgets. I have a BS in Cybersecurity and a Master's from the University of Florida.
CloudRouting & Switching

AWS “Allowed Prefixes” BGP Routing with More Specific Route

Scenario: We have a subnet configured in the “Allowed prefixes,” a /16. You can’t change the size of a subnet...
Read More
Security

CVE-2021-44228_scanner

CERT released a great tool to detect vulnerable Log4j applications. Source: https://github.com/CERTCC/CVE-2021-44228_scanner...
Read More
Security

Palo Alto URL Filtering with Wildcards

Palo Alto Networks firewalls provide URL filtering capabilities, which you can use to control access to websites by blocking or...
Read More
Load Balancing

F5 – Route Domains vs Partitions

ROUTE DOMAIN Route Domains in F5 BIG-IP are a powerful feature that allows for the segmentation of network traffic, thus...
Read More
Data CenterRouting & Switching

Cisco Optics-to-Device Compatibility Matrix

Cisco Optics-to-Device Compatibility Matrix...
Read More
Load Balancing

F5 – Health Monitor – Target the Appropriate HTTP Status Codes is Recommended

When configuring health monitors for a web application, targeting the appropriate HTTP status codes is crucial to ensure that the...
Read More
Security

CISA Log4j (CVE-2021-44228) Vulnerability Guidance

Log4j is a serious issue we have today.  Probably one of the most serious vulnerabilities of my time.  It’s so...
Read More
Cloud

An Overview of the AWS Cloud Adoption Framework

Security

TLS Verification and Testing

HOW TLS WORKS TLS version negotiation is typically performed as part of the SSL/TLS handshake process. When a client initiates...
Read More
Data Center

Cisco ACI Auto-Negotiation and Forward Error Correction

New and Changed Information The following table provides an overview of the significant changes up to the current release. The...
Read More
Load More

Categories

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

Tags

Active Directory (AD) AI AWS Azure Best Practices BGP Certificates Cisco Cisco ACI Cisco ASA Cisco ASR Cisco Catalyst Cisco CLI Cisco ISE Cisco Nexus Cisco Stack 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 Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
© 2026 cordero.me • All Rights Reserved
  • 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
    • IP Calculator
    • IP Calculator Slicer
    • IP Prefixlist LE GE Calculator
    • RouteAgg
    • Subnet Breakout
    • Time Zone Converter
    • 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) AI AWS Azure Best Practices BGP Certificates Cisco Cisco ACI Cisco ASA Cisco ASR Cisco Catalyst Cisco CLI Cisco ISE Cisco Nexus Cisco Stack 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 Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
Start typing to see results or hit ESC to close
Troubleshooting Palo Alto Microsoft Windows F5 Cisco
See all results