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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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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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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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Servers

Public DNS Security

This is a good doc from Google. Security Benefits Introduction: DNS security threats and mitigations Because of the open, distributed...
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Copyright © 2022 Kerry Cordero
  • Home
  • About
  • Disclaimer
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Categories

  • Cloud
  • Code
  • Data Center
  • Laptops & Desktops
  • Load Balancing
  • Routing & Switching
  • Security
  • Servers
  • Uncategorized
  • VOIP
  • Wireless

Tags

AWS Azure Best Practices BGP Certificates CISA Cisco Cisco ACI Cisco ACS Cisco ASA Cisco ASR Cisco Catalyst Cisco CLI Cisco ISE Cisco Nexus Cisco Stack Cisco Wireless DDOS Design DNS EIGRP F5 HP IP Sla Kali Logging macOS Microsoft IIS Microsoft Windows Netflow Okta OSPF Packet Capture Palo Alto Palo Alto CLI PDF Ports PowerShell QOS snmp Splunk SSL Structured Cabling Troubleshooting VMWare
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Troubleshooting Palo Alto Microsoft Windows Cisco ASA PDF
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