Kerry CorderoKISS Design - Human Error Prevention
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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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Laptops & DesktopsServers

Port Numbers

Port numbers are assigned in various ways, based on three ranges: SystemPorts (0-1023), User Ports (1024-49151) Dynamic and/or Private Ports...
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CodeLaptops & DesktopsServers

Windows Powershell giving “execution of scripts is disabled” error

I was getting an error when I went to run a PowerShell script.  This was the error: PS C:\> .\kerrys-script.ps1...
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Laptops & DesktopsSecurityServers

Changing the MAC Address on a Kali Box

First look at the MAC Address for your device (there are many ways): ifconfig | grep ether or cat /sys/class/net/*/address...
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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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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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Data CenterServers

Cisco UCS Best Practices

Chassis/FEX Discovery Policy:...
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Laptops & DesktopsSecurityServers

Kali Linux RPi3 Boot to CLI

Get the current session type, cli or lightdm+xfce: systemctl get-default Set the cli by disabling lightdm autostart: systemctl set-default multi-user.target...
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SecurityServers

Linux Packet Captures with TCPDUMP

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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Copyright © 2022 Kerry Cordero
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Categories

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