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Routing & Switching

STP – Tracking Down Topology Changes and the Importance of Setting the Root Bridge

Finding Spanning Tree Protocol (STP) topology changes in a network is not always straightforward. However, it is critical to identify...
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Laptops & Desktops

Windows 11 WSL Error – Please enable the Virtual Machine Platform Windows feature and ensure virtualization is enabled in the BIOS

I was installing Ubuntu in Windows 11 using WSL. I was getting the error below: “Please enable the Virtual Machine...
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CloudData CenterRouting & Switching

RADIUS – Cloud Issues

There’s been reports of RADIUS issues when dealing with the cloud because of out of order packets and fragmentation.  On...
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CloudRouting & SwitchingSecurity

Akamai Prolexic Routed DDOS Protection

So what is Akamai prolexic routed DDOS protection? Prolexic Routed is a simple and effective approach for businesses to secure...
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Routing & SwitchingSecurity

VLANs and Access Control

I’m writing this post because I’ve been in many environments where a VLAN is brought up as if it’s securing...
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Routing & Switching

RFC5737 – IPv4 Address Blocks Reserved for Documentation

This post shows three IPv4 address blocks that are available for documentation purposes. Predefined address ranges for documentation and examples...
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Servers

IIS Log File Type Sets the Time Zone

The other day, I worked with IIS, which has been a while. I looked at the logs with a coworker...
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Data CenterLoad Balancing

F5 – Items Not Synced During ConfigSynch Between Device Group Members

During a configuration synchronization (ConfigSync) procedure, BIG-IP elements that are not synced amongst device group members are discussed in this...
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Security

Palo Alto How and When APP-ID Works

The first TCP Handshake will be allowed if you are using destination TCP/UDP port-based rules with APP-ID. The Palo will...
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SecurityServers

Microsoft Recommended Block Rules

From Microsoft:...
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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 macOS Microsoft IIS Microsoft SQL Microsoft Windows OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS Splunk SSL Storage Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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