Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Routing & SwitchingServers

Cisco and HP Terminology Differences

I’ve been working with HP Enclosures and Cisco devices a long time now and these always get confusing when trying...
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Load Balancing

F5 – HTTP Health Check Monitors (error/status codes)

There are so many ways to do this but below are some examples and will help get started....
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Security

Palo Alto RMA Replacement

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

Palo Alto Active/Active vWire Design

Below is the design we are going to look at:...
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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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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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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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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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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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  • 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) API 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 Logging macOS Microsoft IIS Microsoft SQL Microsoft Windows OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare
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