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Security

Palo Alto – Perform FIB Lookup for a Specific Destination

This command is a good one that I use often. There are time I want to see if a route...
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Code

Common HTTP Response Codes

Security

Okta Voice Call Authentication MFA Being Blocked – Tmobile Spam Blocking

I noticed that the Okta Voice Call Authentication callback option for MFA was not working for my Cell phone number....
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Routing & Switching

IPv4 CIDR Blocks

  Network Bits Subnet Mask Number of Subnets Number of Hosts /8 255.0.0.0 0 16777214 /9 255.128.0.0 2 (0) 8388606...
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Data CenterRouting & Switching

Cisco – Min and Max Fiber Signals dBm

You’ll want to know what a good Fiber dBm is when troubleshooting networks. Always look at the Data Sheets. I’ve...
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Security

Palo Alto – Source Ping

Something to keep in mind is when you ping from a Palo Alto firewall via the CLI, it’s going to...
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Common Ports

Laptops & DesktopsServers

10 Common Reasons for a Windows AD Lockout

1. Programs with cached credentials 2. Changed password in a service account 3. Having a bad password limit that’s too...
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Servers

Types of HTTP Error and Status Codes

It’s important to know your HTTP error codes even if you’re a network engineer. You don’t need to memorize them...
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Routing & Switching

NMAP – Traceroute with Geolocation

nmap --traceroute --script traceroute-geolocation {DOMAIN} NOTE: You need to run this with elevated privileges. ❯ sudo nmap --traceroute --script traceroute-geolocation...
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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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  • 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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