Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Kerry Cordero
JoinedMay 2, 2023
Articles667
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.
Laptops & DesktopsServers

TCP Throughput Calculations

CALCULATE TCP THROUGHPUT The default TCP window size in Windows Server is typically 64KB, but can go up to 2MB...
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Security

Cisco ASA POODLE Mitigation

Google has discovered a vulnerability in the design of SSL version 3.0. This vulnerability allows the plaintext of secure connections...
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Security

Cisco ASA Static NAT

Below I am going to give some examples for Policy Static NATs and Regular Basic NATs. Configuring Policy Static NAT...
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Data CenterRouting & Switching

Cisco Stack Port Channel Issues with MAC Address Persistency

When a switch stack forms a port-channel, the active stack member’s MAC Address is used for the LACP ID. The...
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Security

Cisco Switch Security

Below I will go over the different security threats that can happen on our network and a way to mitigate...
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Routing & Switching

Total Output Drops on Cisco 3750x Switches

I came across a bug in IOS 12.2(53r)SE2 and it shows up in other IOS versions, where the “Total output...
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Routing & Switching

Subnet Mask Cheat Sheet

Routing & Switching

Cisco CLI PIPE and Regular Expressions (RegEx)

Some common ones I use:...
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Routing & Switching

RFC1918 Private IPv4 Address Spaces

RFC1918 name IP address range number of addresses largest CIDR block (subnet mask) host id size mask bits classful description...
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Data Center

Type-2 consistency status = failed

Here’s something you can come accross. When you do a “sh vpc“, you’ll notice that your Type-2 consistency status is...
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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 Okta 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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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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