Kerry CorderoKISS IT Design Principle - Human Error Prevention
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Kerry Cordero
JoinedMay 2, 2023
Articles673
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.
VOIP

QoS Standards and Guidelines with Avaya and Cisco

Definitions COS: Layer 2 marking comprised of a 3 bit field within the 802.1Q Frame. DSCP: Layer 3 marking comprised...
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Routing & Switching

Checking the RIB for RIP, OSPF, EIGRP, BGP, & IS-IS

RIP – “sh ip rip database” OSPF – OLD > “sh ip ospf database” NEW > “sh ip ospf rib...
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Security

Cisco ASA Netflow Configuration

flow-export destination inside [SERVER IP ADDRESS] 9996 or 2055 flow-export template timeout-rate 1 flow-export delay flow-create 60 access-list NETFLOW_EXPORT_ACL extended...
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Laptops & DesktopsServers

TCP Throughput Calculations

CALCULATE TCP THROUGHPUT The default TCP window size in Windows Server is typically 64KB, but can go up to 2MB...
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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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Laptops & DesktopsRouting & SwitchingSecurity

Saving Cisco Configurations Using Putty and Removing -more-

When saving device configurations using PuTTY, you’ll got a lot of –more–’s in the configuration file and it’s annoying. To...
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Security

Cisco ASA AnyConnect SSL VPN with Hairpinning and ONE Public IP for Web Servers

In this post I am configuring AnyConnect SSL VPN Users access to a remote location that happens to be configured...
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Security

Cisco ASA Failover Configuration

For this configuration, I am assuming you already have the Primary ASA configured and working. I’m also assuming the Secondary...
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Routing & Switching

Total Output Drops on Cisco 3750x Switches

I came across a bug in IOS 12.2(53r)SE2 and it shows up in other IOS versions, where the “Total output...
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Routing & Switching

Subnet Mask Cheat Sheet

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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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Troubleshooting Palo Alto Microsoft Windows F5 Cisco
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