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.
Data CenterRouting & Switching

Cisco LACP Individual State with 3rd Party Devices

I work a lot with other products like HP Dell-Brocade, and EMC. Sometimes I need to port-channel to them, but...
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Code

Powershell – Dump all AD Email Addresses

  Get-ADUser -Filter * -Properties DisplayName, EmailAddress, Title | select DisplayName, EmailAddress, Title | Export-CSV "C:\Scripts\Email_Addresses.csv"  ...
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Code

Powershell – Find Active XP, 2000, 2003 devices in the Domain

These scripts are an easy way to see if there are any older Windows devices in your domain. You can...
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Code

Python – Cisco CLI Config Changer

There are three python files. 1. cli-config-changer.py = This is the main file that you run 2. config_file.py = These...
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Laptops & DesktopsServers

Using netstat to show specific port

netstat -na | find “51000” or netstat -np [protocol] | find “port #” netstat -np tcp | find “51000” or...
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Routing & Switching

Cisco Troubleshooting Interface Issues

In my case I was troubleshooting an interface that had to be 100Mb. But these commands can be used on...
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Code

Powershell – Get Domain Admins

Get-ADGroupMember "Domain ADmins" | Get-AdUser -Property LastLogonDate | select name,distinguishedName,LastLogonDate...
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Code

Powershell – Find AD Active Users Password Expirations

Find Active Users with PW Expires Date/Time: Import-Module ActiveDirectory Get-ADUser -SearchBase "DC=cordero,DC=me" -filter {Enabled -eq $True -and PasswordNeverExpires -eq $False}...
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SecurityServers

Palo Alto unknown-udp issue for Syslog Traffic

I ran accross an issue where a Cisco VCSE device was setup by another engineer but the Palo Alto FW...
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Security

Palo Alto User Agent/ID Troubleshooting

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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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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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