Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Kerry Cordero
JoinedMay 2, 2023
Articles667
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.
Routing & Switching

Cisco Nexus IOS Upgrade (Disruptive/Non-ISSU)

This will upgrade from 5.1 to 7.3. Unfortunately because the IOS is so far back, you can’t use ISSU....
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Security

Palo Alto – Factory Default (reset)

To enter maintenance mode, you need to restart your system with request restart system in operational mode or if you’re in...
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Routing & Switching

BGP Address-Family and Peer Groups

BGP can use multiple protocols like IPv4 Unicast, IPv4 Multicast, IPv6 Unicast, IPv6 Multicast, etc..… This means you need to...
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Routing & SwitchingSecurity

Cisco SNMPv3 Config

Below is a working config:...
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Routing & SwitchingSecurity

Packet Capture – Cisco IOS

Certainly, here’s the packet capture procedure on Cisco IOS with specific source IPs, destination IPs, and ports incorporated into the...
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Security

ASA VPN Tunnel Peer IP Change

Using these steps you are trying to minimize downtime. The beauty is that you keep the OLD IP up and...
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Laptops & DesktopsRouting & SwitchingVOIP

iperf and QOS/TOS Settings

iPerf is a tool for active measurements of the maximum achievable bandwidth on IP networks. It supports tuning of various...
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Security

Palo Alto – Disable Client Probing Now

Palo Alto advises against turning it on. While the documentation warns against using it on “high-security networks,” this could be...
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SecurityServers

Packet Capture – TCPdump

TCPdump is an indispensable tool system administrators, network engineers, and cybersecurity professionals use for network troubleshooting and analysis. The tool...
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Security

Packet Capture – Cisco ASA

Packet capture on a Cisco ASA using the Command Line Interface (CLI) can be done through several methods. Here’s an...
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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 Okta OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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