Kerry CorderoPractical Network Engineering Notes
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Security

Routing & SwitchingSecurity

Palo Alto – Incomplete , Not-Applicable, Unknown-tcp/udp , Insufficient Data , tcp-rst-from-client , tcp-rst-from-server

Incomplete = The three-way TCP handshake didn’t complete. (Routing issue or destination server not listening on the port) Not-applicable =...
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Load BalancingSecurity

Sending F5 Logs via High Speed Logging to Splunk

What is HSL? F5 High-Speed Logging (HSL) is a mechanism that F5 devices, like BIG-IP, use to log and send...
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CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Organizational Structures for IT – Network Leads & Network Architects

I’ve carried the Architect title over the years of being in IT. Below is my opinion on the difference between...
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Security

Palo Alto Cheat Sheet – Networking

General Routing Commands...
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Security

Power Up Your Firewalls: A Guide to Using Palo Alto’s EDL Hosting Service

Managing dynamic threat indicators across firewalls can be challenging—especially when you’re juggling multiple sources of threat intelligence. Palo Alto Networks...
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Security

Cisco ASA POODLE Mitigation

Google has discovered a vulnerability in the design of SSL version 3.0. This vulnerability allows the plaintext of secure connections...
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CloudCodeData CenterLaptops & DesktopsLoad BalancingRouting & SwitchingSecurityServersVOIPWireless

Evaluating IT Network Costs: OpEx, CapEx, and TCO

Cost consideration is an essential aspect when designing and implementing network architecture. Here, we delve into the three primary components...
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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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Security

Palo Alto SMTP Reset-Both in the Antivirus Policy and how to Exclude

I was once asked, what happens when SMTP gets reset/blocked, do the end users get a notification....
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CodeSecurityServers

API 101

What’s an API? API stands for Application Programming Interface. It’s a set of rules and protocols for building and interacting...
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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
  • Tools
    • Car Calculator
    • RouteAgg
    • IP Calculator
    • VSLM
  • 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 DDOS Design DNS EIGRP F5 HTTP(S) IP Addressing and Subnetting Microsoft IIS Microsoft SQL Microsoft Windows Netflow OSPF Packet Capture Palo Alto Palo Alto CLI PDF Planning Ports PowerShell python QOS snmp Spanning-Tree Splunk SSL Structured Cabling TLS Troubleshooting Upgrade VMWare Zscaler
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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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