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.
Security

Palo Alto RMA Replacement

Palo Alto calls the new replacement FW a spare....
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Security

Palo Alto Active/Active vWire Design

Below is the design we are going to look at:...
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Load Balancing

F5 – Data Coming In but None Going Out

99% of the time this is caused because the SNAT was not configured. It was over looked in the Virtual...
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Servers

Microsoft Windows Server with Multiple IPs Assigned to a Single Interface

First, I try to avoid this whenever possible. I don’t like the idea of having multiple IP’s on one NIC...
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CodeLaptops & DesktopsServers

Windows Powershell giving “is not digitally signed” error

I was getting this error: File C:\Scripts\XXXXXX.ps1 cannot be loaded. The file C:\Scripts\XXXXXX.ps1 is not digitally signed. You cannot run...
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Security

Palo Alto H1, HA2, and HA3

Palo Alto’s site actually has a good page that explains these in English. See below....
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Laptops & DesktopsServers

DNS Forwarders vs Conditional Forwarders

First, let’s talk about the difference between a zone and a domain. There are several distinct zones in the DNS,...
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Routing & Switching

/31 – Using 31-Bit Prefixes on IPv4 Point-to-Point Links

This all comes down to IP Addressing efficiency. This is from the RFC3021:...
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Data CenterSecurityServers

Splunk Architecture and Design

There’s a lot you need to think about when designing your Splunk environment. I’m hoping to keep adding to this...
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Load BalancingRouting & Switching

F5 – Syslog Issues and Email Notifications

I ran across an F5 cluster that had issues with sending syslogs to our internal mail relay in order to...
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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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