Kerry CorderoKISS IT Design Principle - Human Error Prevention
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PS1

# Active IPv4 default route (lowest effective metric wins) $def = Get-NetRoute -DestinationPrefix “0.0.0.0/0” -AddressFamily IPv4 | Sort-Object -Property RouteMetric,...
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Uncategorized

Protected: PK1

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Security

VLAN 1 and Why You Should Not Use It

Why You Should Avoid Using VLAN 1 in Cisco Networks VLAN 1 is one of those topics that every network...
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Protected: z

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Data CenterRouting & Switching

SNMP – What are MIBs and SNMP Walk

What is a MIB? A MIB is essentially a dictionary of things a device can report via SNMP. It defines...
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CloudData CenterRouting & SwitchingSecurityWireless

SNMP vs. Syslog: Understanding Traps, Polling, and When to Use Each

What Is SNMP? SNMP (Simple Network Management Protocol) is built for structured monitoring and device management. It works in two...
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Laptops & Desktops

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Security

Cisco VPN Tunnel Troubleshooting – IKEv1 and IKEv2 – ASA and ASR1001 (with VRF examples)

Phase 1 = IKE / Phase 2 = IPsec. Examples use a peer 198.51.100.10 and a VRF named CORDERO. ASA...
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Cloud

Zscaler – Wildcards: Optimizing Zscaler ZPA App Segments for Performance and Scale

When deploying Zscaler Private Access (ZPA), it’s tempting to take shortcuts during early rollouts: one giant wildcard app segment (*.corp.local),...
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Cloud

Zscaler – App Segment Ports and Wildcard Flow

Where the ports live The ports defined in the App Segment (e.g., TCP 1–65535 except 53) are remote ports —...
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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 OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Splunk SSL Storage Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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