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Blog
Here is a link to my Network World Blog on Core Networking and Security.

Here is a link to the Infoblox IPv6 Center of Excellence blogs.

Here is a link to the GTRI blog page.

Here is a link to my contributions to the Cisco Champions blog.

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Here is a list of the articles that I have written. The newest blogs are at the top of the list.

Amazon Web Services Is Getting into the IPv6 Holiday Spirit
12/14/16

6 network and security trends you can expect in 2017
12/9/16

AWS re:Invent re:Emphasizes the Importance of Cloud Security
12/5/16

IPv4 as a Service (IPv4aaS) (Part 1)
11/16/16

6 tips for buying or selling a smart home
What should remain in the house upon sale?
11/14/16

A dozen extensions to TCP/IP that optimize internet connections
Optimizations to the original TCP, UDP and Internet protocols that improve performance
10/17/16

IPv6 is Accelerating as IPv4 is Nearing its Peak
10/12/16

Bringing SDN to Federal Networks: VMware NSX STIG Released
9/28/16

IPv6 Security Vulnerability Scanning
9/14/16

Could SD-WAN Change IPv6 Adoption in Enterprises?
8/10/16

Highlights from Cisco Live U.S. 2016
7/15/16

Disabling IPv6 Router Advertisements in the Data Center
7/13/16

Converge Your Teams for Greater SDN/NFV Benefits
6/14/16

Can IPv6 Really Be Faster than IPv4? (Part 2)
6/8/16

Can IPv6 Really Be Faster than IPv4? (Part 1)
5/11/16

How Many IPv6 Nodes Can You Have on a LAN?
4/13/16

5 reasons to move to an SD-WAN
Software-defined WANs can save money and improve network performance.
3/21/16

Resources abound to make cloud services more secure
Learning to securely develop and use cloud services
3/7/16

Home Networking with IPv6
3/8/16

IETF Proposed Solutions for Improved DNS Privacy (Part 2 of 2)
2/9/16

DNS Privacy in the Face of Pervasive Monitoring (Part 1 of 2)
1/12/16

Could Wireless 802.11ac be Propelling IPv6 Adoption?
12/7/15

IPv6 in Rural Communities
11/11/15

Only You Can Prevent IPv6 Prefix Disaggregation
10/14/15

ARIN Finally Runs Out of IPv4 Addresses
IPv4 Address Cupboards are Bare in North America.
9/22/15

Getting to Know Your Neighbors with IPv6 First Hop Security
9/4/15

VMworld 2015 Action Review
9/4/15

Applying Agile Methodology to IPv6 Deployment
8/12/15

North America’s IPv4 Address Shortage
7/1/15

IPv4 Address Trading for Fun and Profit
6/16/15

Cisco Live DevNet Zone: Larger Than Ever
6/16/15

Different Personalities of the Nexus 9000 in NX-OS Mode
6/6/15

2015 North American IPv6 Summit Review
4/27/15

Improving E-Mail Security with DomainKeys Identified Mail (DKIM)
4/9/15

Is an SDN Switch A New Form of a Firewall?
SDN switches can behave like a firewall, but they may not be a replacement for the real thing
4/1/15

Deploy IPv6 Now, But You Will Still Experience the IPv4 Address Shortage
3/4/15

With Cisco ACI, Do You Still Need A Firewall?
3/2/15

Holding IPv6 Neighbor Discovery to a Higher Standard of Security
2/10/15

Annual Security Reports Predict What We Can Expect in 2015
Recent security reports give insight into security best practices often missed.
1/12/15

Do You Really Need a Subnet Calculator for IPv6?
1/9/15

Mobile Apps for Troubleshooting IPv6
11/18/14

SDN Security Attack Vectors and SDN Hardening
Securing SDN deployments right from the start.
10/28/14

High Availability DHCPv6
10/21/14

Still Using DHCP On Your Routers? You Can’t Do That With IPv6!
9/15/14

IPv6 and OpenStack
8/17/14

OpenFlow Supports IPv6 Flows
Software Defined Networking systems are gaining IPv6 capabilities
7/31/14

Making a New Product? Make it Dual Protocol!
6/22/14

Promise Theory
Can you really trust the network to keep promises?
7/1/14

Why You Must Use ICMPv6 Router Advertisements (RAs)
6/16/14

ACI Details Revealed at Cisco Live 2014
5/27/14

Software Containers: Used More Frequently than Most Realize
Containers are being used more often to secure applications and create cloud services
5/26/14

Finding and Fixing Open DNS Resolvers
5/13/14

ARIN Reaches Phase 4 IPv4 Exhaustion
4/23/14

ARIN Enters Phase 4 of IPv4 Exhaustion
ARIN is now down to their final /8 equivalent block of IPv4 addresses.
4/23/14

Handling the Heartbleed OpenSSL Vulnerability
4/16/14

DNS-based Authentication of Named Entities
4/14/14

Windows XP: Goodbye and Good Riddance
If you are still running Windows XP, your organization has bigger problems
3/31/14

Not your Father’s Flow Export Protocol (Part 2)
What is AppFlow and how does it differ from other flow analysis protocols?
3/19/14

The Fragmented Internet
3/17/14

Your Father’s Flow Export Protocol (Part 1)
History of flow analysis protocols and how we use them
3/14/14

Improved Security Through DNS Inspection (Part 2)
2/18/14

The erosion of IT's middle class
Evolve your career with the changing face of IT, or risk getting left behind
2/18/14

Improved Security Through DNS Inspection (Part 1)
1/29/14

Clos Networks: What's Old Is New Again
What goes around, comes around – Clos Networks are back
1/11/14

Using SDN to Create a Packet Monitoring System
Packet-level Monitoring Use Case with Cisco XNC and Monitor Manager
12/15/13

gogoNET LIVE 4! IPv6 Conference Recap
IPv6 conference provide information to both physical and virtual attendees
11/17/13

Dual-Protocol Routing with Raspberry Pi
Using a Raspberry Pi as a low-cost dual-protocol router
11/12/13

Raspberry Pi as a Network Monitoring Node
Using an inexpensive Raspberry Pi system for remote network troubleshooting
10/30/13

Understand and Obey the Laws of Networking
Ignorance of the laws of networking is no excuse.
10/5/13

Traceroute and DNS Interaction
9/16/13

OSPFv3 for IPv4 and IPv6
Cisco IOS support for OSPFv3 for multiple address families
9/2/13<

IPv6 Network Management
Consider how you will manage IPv6 as you prepare to deploy it
7/24/13

Mobile Devices and BYOD are Driving IPv6 Adoption
A mobile population needs IP addresses to communicate
6/24/13

Jumbo Frames
Does your network support Jumbo Frames and should you enable it?
6/3/13

Stages of IPv4 Address Exhaustion
5/24/13

MTU Size Issues
Issues related to MTU size, PMTUD and packet fragmentation
5/18/13

Life in a Dual Stack World
What life might be like when we are using two Internet protocols?
4/23/13

Kali Linux: The Next BackTrack
The most popular open source pen testing distribution just got better
3/24/13

Using Dual Protocol for SIEMs Evasion
Attackers using IPv4 and IPv6 can avoid detection by IPS, SIEMs, reputation filtering, and more
2/24/13

Core Networking and Security 100th Blog Post
Four years of blogging about Core Networking and Security (and IPv6)
2/03/13

IPv6 Certifications
If you are pursuing an IT certification in 2013, IPv6 questions may be on the test
1/26/13

9 Common Spanning Tree Mistakes
Frequent spanning tree protocol misconfigurations cause network problems
1/02/13

Time to Upgrade Cisco Catalyst 6500 Non-E-Series Chassis
Support for older 6500 chassis ended yesterday
12/1/12

U.S. Government Progress on IPv6 Deployment
Monitoring the country's IPv6-enabled government services.
11/26/12

IPv6 Is Not an All-or-Nothing Proposition
You don't have to switch directly from IPv4 to IPv6
10/07/12

Achieving PCI Compliance When Using IPv6
Does the PCI DSS really require NAT for IPv6?
10/07/12

IPv6 NAT - You can get it, but you may not need or want it.
10/07/12

RIPE NCC IPv4 Address Exhaustion
9/14/12

Web Application Firewalls and IPv6
Does your WAF protect against IPv6 attacks?
9/11/12

Dual-Stack Will Increase Operating Expenses
More IT staff required when running IPv4 and IPv6 simultaneously.
7/31/2012

Life After World IPv6 Launch
What is next for the next-generation Internet Protocol?
6/23/12

Preparing Your Enterprise for World IPv6 Launch
Things you should be doing even if you are not participating
5/19/12

What About Stream Control Transmission Protocol (SCTP)?
What is SCTP and why are we not using it?
4/30/12

IPv6 Summit Recap
Review of 2012 North American IPv6 Summit
4/15/12

Ramp Up On IPv6 at a 2012 IPv6 Event Near You
2012 IPv6 events are coming to a town near you
3/10/12

Should You Allow Inbound E-mail Over IPv6?
Why you may not want to allow inbound e-mails over IPv6 transport?
3/4/12

Clear Choice Test: IPv6 deployment starts at the network edge
Six ADCs deliver IPv6 capabilities to apps hosted on IPv4 Web servers
2/13/12

Internet Edge IPv6 Deployment
Start at your Internet edge when deploying IPv6
2/13/12

IPv6 Week and World IPv6 Launch
Lengthier World IPv6 Day Events in 2012
2/12/12

IPv4 NAT is the Killer App for IPv6
2/6/12

2012 North American IPv6 Summit
1/30/12

The Future of Firewall Policies
How IPv6 will change the way we configure firewall policies
1/19/12

I Want IPv6 for Christmas - Part II
IPv6 gifts can you give for the holidays
12/20/11

Measuring IPv6 Growth
Several recent sources of IPv6 adoption statistics
11/21/11

Techniques for Prolonging the Lifespan of IPv4
May the road rise up to meet you, may the wind be ever at your back and may you outlive IPv4
11/09/11

Death to Firewalls; Long Live Firewalls
Changing firewall architectures as the pendulum swings from centralized to distributed firewalls
10/17/11

Peeling the Security Onion
Security Onion saved me so much time it made my eyes water
09/10/11

Stronger IPsec VPN Configurations Needed
Should you be using IPsec with IKEv2, SHA-2 and AES?
08/22/11

Firewall Administration Techniques and Tools
Methods and tools to help you gain control of your firewalls
07/31/11

New IPv6 DNS and BIND Book
New book provides important information for IPv6 BIND configuration
07/05/11

World IPv6 Day Results: New Internet Protocol Proves It's Ready
06/08/11

Preparing for World IPv6 Day
How should you prepare for World IPv6 Day on June 8th?
05/29/11

Troubleshooting IPv6 Networks and Systems
Techniques for finding problems in a dual-protocol environment
05/20/11

Rocky Mountain IPv6 Summit has Avalanche of Attendees
2011 IPv6 Summit provided valuable information to attendees
05/01/11

Cost of Running an IPv4 Network Will Increase
Operating an IPv4 network will become increasingly costly and make IPv6 more attractive
04/03/11

IPv6 Training Resources
Here are some resources to help you avoid "IPv6 brain drain"
03/17/11

Cisco USB Console Ports
Cisco products now come with USB ports that allow console access
03/11/11

Recent Annual Security Reports - Valuable Insight on Internet Threats
The latest vendor annual security reports share state of Internet security threats
02/21/11

When it Comes to IPv6; Go Native
Do not fear deploying dual-protocol web sites
02/02/11

Top 10 Tasks for IPv6 Application Developers
Things to consider when creating dual-protocol applications
01/23/11

IPv6 New Year Predictions
How did my predictions for 2010 turn out and what might occur in 2011?
01/01/11

IPv4 Reputation Filtering Not a Long-Term Solution
As carriers deploy Large Scale NAT (LSN) reputation filtering will lose its effectiveness
12/11/10

IPv6 Subnet Calculators
IPv6 subnetting and IPv4 subnetting are very different so you may need a tool to assist you
11/22/10

The Incredible Shrinking Bogon List
As the global IPv4 free pool reduces so does the size of the IPv4 bogon list
11/06/10

Network Packet Monitoring Matrix Switches
New devices can eliminate limitations of using taps and SPAN ports
10/24/10

My Seven Secret Weapons for Network Management on a Budget
Here's a list of my favorite free or open source tools to keep your network humming.
10/11/10

Tier 1 for IPv4 != Tier 1 for IPv6
Will we see a changing of the ISP guard with IPv6?
09/11/10

Allow Both TCP and UDP Port 53 to Your DNS Servers
DNS queries are getting bigger so we do not want to accidentally block them
08/22/10

IPv6 Enabled Web Browsers
Know where you are going and with which IP version before you get there
07/24/10

Testing NAT64 and DNS64
Setting up an IPv6-only network with Ecdysis and surfing the IPv4-only Internet
07/08/10

IPv6 Summit Was a Huge Hit
Rocky Mountain IPv6 Summit is Largest IPv6 Conference of the Year
05/31/10

Future-Net Debrief
The 2010 Future-Net was Enlightening and Fun
05/16/10

Comcast IPv6 Adoption Monitor
Site gives insight into IPv6 usage
05/07/10

Rocky Mountain IPv6 Summit
3rd annual IPv6 Summit is set to be a great event
04/23/10

NIST Gives Guidelines for Securing IPv6
NIST Draft of Special Publication 800-119 will help secure IPv6 ahead of deployment
04/16/10

Rickrolling and Web Security
What can Rickrolling teach us about web security?
03/24/10

Cisco ASA Version 8.3
Cisco’s latest ASA software version adds significant functionality
03/14/10

Newest Security Reports Show Changing Threats
Look at the recent annual security reports to find attack trends
03/06/10

Spanning Tree: Long Path Cost
Increases in link bandwidth will require eventual path-cost length upgrade
02/16/10

BackTrack 4 Final Released
BackTrack 4 is a supremely useful security assessment toolkit
02/15/10

Domain-Name Jail is Not Fun
My trials and tribulations of restoring my domain name
01/23/10

2010 Predictions
My predictions for 2010; Let’s see if they come true
01/03/10

Service Provider Contradiction Affliction
Service providers advertize both blazing downloads and advocate rate-limiting
12/15/09

gogoNET by gogo6: New Social Networking Site for IPv6
IPv6 people unite on gogoNET.gogo6.com
12/14/09

10GE and Network Oversubscription Ratios
10Gbps Ethernet is changing how we think about network design oversubscription models
12/11/09

BackTrack4 Uses IPv6 to Cover Tracks
Security assessment toolkit uses Miredo as back-channel
11/23/09

Observe IPv6 Traffic Encapsulated Within IPv4 Packets
Understanding your network means understanding IPv6 tunneled packets
11/05/09

New IPv6 Features in Cisco IOS 15.0
A few new IPv6 features in Cisco’s latest software
10/19/09

Windows 7 and IE8 Slowness Problems Fixed
IE8 slowness was driving me crazy until I found a fix
10/09/09

The IPv6 Internet is Growing
Evidence that IPv6 Internet Traffic is Increasing
09/27/09

10 in IPv6 Does Not Equal 10 in IPv4
A Funny Thing Happened on the Way to Configuring an IPv6 Tunnel
09/17/09

I Remember When I Used a Public IPv4 Address
When was the last time you actually used a public IPv4 address?
09/06/09

Networking around the World
Realization that the Internet world is not flat
08/30/09

Finding an IPv6 ISP
Advice on Choosing and IPv6-capable Internet Service Provider
08/07/09

CCIE Recertification – Not Again!
Passing the CCIE Recertification Exam for the 8th Time – Priceless
08/02/09

NANOG46 and Cisco Live had Significant Focus on IPv6
IPv6 was a Key Focus Topic at NANOG46 and Cisco Live
07/21/09

IPv6 Traffic: Do Not be Overly Alarmed
Be aware of IPv6 traffic and its security implications – No need to Beware
07/15/09

Take Care of Your Brain
Be a Better IT Professional by Taking Care of your Brain
07/10/09

Cisco Live 2009 San Francisco
Educational and Fun all Rolled into One
07/05/09

Ethernet on a Ring
Methods of using Ethernet in a ring topology
06/29/09

VMPS: Put a Fork in it
VLAN Membership Policy Server VMPS
06/22/09

Forget Five-9s – Go for 100%!
05/30/09

What’s New in Cisco ASA Firewall Release 8.2?
05/17/09

Review of 2009 Future-Net-Expo
05/10/09

Annual Security Reports
05/04/09

IPv6 Summit Reaches Pinnacle
04/26/09

High Expectations of Network Availability
04/12/09

Routers versus Switches for Enterprise Internet Routing
03/26/09

Google IPv6 Implementors Conference
03/22/09

Free IT Training – A Reality in 2009
03/15/09

Recycling – A Key Part of a Green IT Strategy
03/08/09

Security at 10Gbps
02/28/09

Tagging the Native VLAN
02/19/09

Cisco Adds Features to Firewall Services Module
02/15/09

Spanning Tree - Oh Woe Is Me
02/09/09

IPv6 Capabilities in Cisco’s IPS Software Version 6.2
02/01/09

Windows 7 IPv6 Support
01/29/09

Practical BGP Security
01/24/09

Cisco IPv6 Support Comes Standard
01/19/09

Configuration Management on a Budget
01/14/09

IPv6 on Your Mobile Phone
01/11/09

Increasing Network Availability with Visio
01/04/09

I Want IPv6 for Christmas
12/24/08

Welcome to Scott Hogg's Network World Blog
12/24/08
 

 

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