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DNS

CodeServers

Powershell – Find All AD Integrated DNS Servers

    $dnsServers = (Resolve-DnsName -Name e-ins.net -Type NS).NameHost Resolve-DnsName -Name _ldap._tcp.dc._msdcs.e-ins.net -Type SRV | Where-Object {$_.NameTarget -in $dnsServers}  ...
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CloudLoad Balancing

F5 – BIG-IP DNS Changing A Records with Zonerunner

When using F5 DNS (formerly known as BIG-IP DNS) and Zonerunner together, the best way to make changes to the...
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CloudData CenterRouting & Switching

DNS Internal vs External

DNS (Domain Name System) is a distributed hierarchical system that translates human-readable domain names into IP addresses. It enables users...
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Laptops & DesktopsSecurityServers

Finding Public IP Ranges using DIG

This is one way to find public IP Ranges for email using DIG. This is used if you want to...
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Data CenterLaptops & DesktopsSecurityServers

DNS Authoritative vs Non-Authoritative (Recursive) and DNS Flows

DNS name servers are usually split into two categories:...
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Load Balancing

F5 – BIG-IP DNS Create Subdomains

To create subdomains using F5 BIG-IP DNS and Zonerunner, you can follow these steps: 1. Access F5 DNS Configuration Utility:...
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CloudSecurityServers

DNS for App Dev Prod and Non-Prod

When it comes to building out DNS Fully Qualified Domain Names (FQDNs) for application development, it’s important to consider the...
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Laptops & DesktopsServers

Windows DNS Overview

Windows Active Directory (AD) DNS (Domain Name System) is a service provided by Microsoft Windows Server that is tightly integrated...
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Data CenterLaptops & DesktopsRouting & SwitchingServers

DNS Rewrite aka DNS Doctoring

DNS rewrite or DNS Doctoring has been around on the Cisco ASA’s for a while. Palo Alto firewalls received this...
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Security

SPF Records

SPF’s are used to help mitigate SPAM emails.  It basically dictates what happens when there’s a failure in a match...
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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 F5-LTM 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 Structured Cabling TLS Troubleshooting Upgrade VMWare
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