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Powershell – SMB Troubleshooting

There are several commands and operations that you can use in PowerShell to troubleshoot a Windows file server that is...
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Laptops & DesktopsRouting & SwitchingServers

Data Flow – Laptop to Server Communication

The communication between a laptop and a server within a network involves a number of layers and protocols. Here’s a...
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CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Certificate Chains

HOW CERTIFICATE CHAINS WORK Certificate chains, also known as a chain of trust, work on the concept of Public Key...
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Laptops & Desktops

MacOS oh-my-zsh errors fix

After an upgrade to my oh-my-zsh software, I was getting a bunch of errors like the ones below: [oh-my-zsh] Insecure...
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Laptops & DesktopsSecurity

Packet Capture – Microsoft Windows Built-in Packet Capture PKTMON (Older NETSH TRACE)

Yes, both Windows 10 and 11 include a built-in command-line tool for packet capturing named “Packet Monitor” or pktmon. It...
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Laptops & Desktops

Dell – Get Your System Service Tag Using Command Prompt

Go to your command prompt and type in “wmic bios get serialnumber” C:\>wmic bios get serialnumber SerialNumber C5Q###...
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Data CenterLaptops & DesktopsRouting & SwitchingSecurityServersWireless

SNMP Polling vs Traps

The difference between these is who is initiating the conversation. In Polling, the monitoring server is initiating the conversation asking...
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Laptops & DesktopsServers

DNS, SFTP, and FTPS: Why Firewalls Handle These Protocols Differently

1. DNS Resolution and Protocol Handling Both HTTPS and SFTP require DNS resolution if a domain name (FQDN) is used:...
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Laptops & DesktopsRouting & Switching

Cisco Switch Macros (2960S/X 3750,etc…)

Cisco has built in port macros where it will automatically assign specific commands to a port based on the macro...
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Laptops & Desktops

Troubleshooting FTP Passive Mode Issues: PRODFTP vs. DEVFTP

When working with FTP in passive mode, issues can disrupt data transfer. In this case, we analyzed why the FTP...
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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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