Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Kerry Cordero
JoinedMay 2, 2023
Articles691
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.
CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Organizational Structures for IT – Network Leads & Network Architects

I’ve carried the Architect title over the years of being in IT. Below is my opinion on the difference between...
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Security

Packet Capture – Understanding TCP Headers and Packet Filtering

The Transmission Control Protocol (TCP) is one of the fundamental protocols that power the Internet. It provides reliable, ordered, and...
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Routing & Switching

MTR Analysis Deep Dive: When Packet Loss Isn’t Really Packet Loss

Intro When diagnosing latency or packet loss, many engineers turn to MTR (My Traceroute) — a hybrid of ping and...
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Routing & Switching

Cisco Nexus – Upgrading with In-Service Software Upgrade (ISSU)

In the fast-paced world of networking, system uptime is a top priority. When upgrading network infrastructure, minimizing downtime is essential....
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Security

Packet Capture – Free PCAP Files for Learning

There are several repositories and websites where you can find free PCAP files for learning purposes: Wireshark Sample Captures: The...
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Data CenterRouting & Switching

Quality of Service (QoS) – Application Marking Recommendations

In our hyper-connected world, prioritizing specific types of data traffic has become essential. Quality of Service (QoS) is a mechanism...
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Code

Python – Find IP Location with IPDATA API (Geolocation)

# Author: Kerry Cordero # Version: 1.0.0 # Description: This script will find IP Location via ipstack API import requests...
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Routing & SwitchingSecurity

Packet Capture – Cisco Nexus

Cisco Nexus switches use a slightly different syntax compared to the ASA series for packet capturing, which is accomplished through...
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Routing & Switching

Cisco Stacks – Network Upgrades with ISSU and Cisco StackWise Virtual

In today’s fast-paced world, network reliability and uptime are critical for any business. However, network administrators often face a daunting...
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Security

Addressing Session Timeout Issues in Palo Alto Firewalls: PAN-216314

Issue: PAN-216314 Firewalls play an essential role in network security, and like any other sophisticated technology, they sometimes encounter issues....
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© 2025 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
    • RouteAgg
    • IP Calculator
    • 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) 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 snmp Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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