Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Kerry Cordero
JoinedMay 2, 2023
Articles669
20+ years of experience and proven performance in large scale enterprise network infrastructure architecture, design, implementation, migration, security, operation, troubleshooting, leading/managing teams, and budgets. I have a BS in Cybersecurity and a Master's from the University of Florida.
Laptops & DesktopsSecurity

A list of SMTP and IMAP eMail Settings

Security

Cisco ASA VPN Tunnel Encaps Decaps

If you look below, you can see going over a tunnel that the decaps are at 0 and the encaps...
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Routing & Switching

Cisco HSRP Tracking

HSRP Tracking is pretty easy to do. You have several options as you’ll see below....
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VOIP

QoS Standards and Guidelines with Avaya and Cisco

Definitions COS: Layer 2 marking comprised of a 3 bit field within the 802.1Q Frame. DSCP: Layer 3 marking comprised...
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Routing & Switching

Checking the RIB for RIP, OSPF, EIGRP, BGP, & IS-IS

RIP – “sh ip rip database” OSPF – OLD > “sh ip ospf database” NEW > “sh ip ospf rib...
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Security

Palo Alto URL Filtering Order

Issue What happens when a URL matches multiple patterns (multiple custom URL filtering categories and allow/block-list) within a URL filtering...
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Servers

ACS v5 should query desired Domain Controllers

Here’s a good command to see which DC the ACS server is querying:...
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Routing & Switching

Cisco Router Viewing Crash Files

Contents of the Crashinfo File The crashinfo file contains this information: *limited error message (log) and command history *description of...
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Laptops & DesktopsRouting & SwitchingSecurity

Saving Cisco Configurations Using Putty and Removing -more-

When saving device configurations using PuTTY, you’ll got a lot of –more–’s in the configuration file and it’s annoying. To...
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Security

Cisco ASA AnyConnect SSL VPN with Hairpinning and ONE Public IP for Web Servers

In this post I am configuring AnyConnect SSL VPN Users access to a remote location that happens to be configured...
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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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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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