Category Archives: How-To

Procedures or processes to accomplish specific tasks or objectives with technology.

Redirecting DNS Requests to Umbrella with ASA

As networks begin leveraging intelligent DNS products, there is often a need to do some magic at the Internet edge to redirect to the target provider. Some products actually have this capability embedded. Even though the ASA doesn’t specifically have … Continue reading

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Redirecting DNS Requests to Umbrella with FTD

A few days ago I shared an article that described redirecting DNS requests with ASA. A good use case for this might be if an organization is using Cisco Umbrella but there is no way to get every host is … Continue reading

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Validating SGT Inline with Netflow and Embedded Packet Capture

In the last article, Learning TrustSec, An Introduction to Inline Tagging, we took a quick look at manual configuration of SGT Inline Tagging in a manual configuration. We also performed some validation with show commands and proved the operation by enabling … Continue reading

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Learning TrustSec – An Introduction to Inline Tagging

In my last article, Basic TrustSec – Implementing Manual SGTs and SGACLs, we talked about a basic TrustSec configuration. In that example, we shared the understanding of having two devices connected to a single switch and enforcing traffic policies via … Continue reading

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Basic Trustsec – Implementing Manual SGTs and SGACLs

Trustsec is a mature and interesting policy mechanism available in most Cisco gear. The features and capabilities vary depending on device type and class. One of the frustrations I have is that almost every Trustsec reference I find focuses on … Continue reading

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Viewing Cisco Proximity with SpectrumView

I wanted to share a quick trick for troubleshooting Cisco Proximity. For those that haven’t stumbled onto this particular technology, Proximity is a feature in Spark Connected and Traditional Cisco Video Endpoints that provides a pairing channel for screen sharing. … Continue reading

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