David Alicea

What is a Prefilter Policy in the Cisco Secure Firewall? youtu.be/GXgkJjWfXQQ?...

Security Field Day #XFD16 is 📅 October 28 - 30, 2026 🔐 Tune in 🔴 LIVE on Wednesday, October 28 at 1:30 PM - 6:00 PM to see @Cisco.com. ▶️ YouTube: www.youtube.com/@techfieldday 🔹 Linkedin: www.linkedin.com/company/tech... @TechFieldDay.com @NetworkingNerd.net #XFD16 #Cybersecurity #AISecurity

PHP devs publish critical bug fix as site owners warned: Pull 'em offline if you're unpatched

In this short video, I take a quick look at how Cisco Cloud Control brings Cisco’s solutions together. youtu.be/GU1ihUkL3kg?...

More fun with the AI Assistant in the Cisco Meraki Dashboard: youtu.be/iFPjFSRFq_Y?...

For those using the Meraki Dashboard, have you seen the Deep Reasoning more in the AI Assistant? Lots of great info it can give you about your networks. youtu.be/fZkASvv0zmk?...

Secure Group Tags help with identity based segmentation. Enforcement using SGTs is also something the Cisco Secure Firewall can do. youtu.be/mvfHv-I1HLU?...

Dear Espresso, Help me!

AI Field Day continues in just 30 minutes! 📆 #AIFD8 Watch @Cisco.com present 🔴 LIVE on YouTube, LinkedIn, or website at 1:30 US/Pacific. 🔻 YouTube: buff.ly/OLTerol 🔹 LinkedIn: buff.ly/DkeViNf @Stephen.Fosketts.net @TechFieldDay.com #AI #AgenticAI #AIInfrastructure

In this video, I dive into some of Cisco Secure Firewall’s logging capabilities and I spend some time in Splunk. youtu.be/dMSrhnOZtsw?...

Encrypted Visibility Engine is a way to shed some life on encrypted traffic without decrypting. Check it out! youtu.be/nTV46n4tf38?...

The Cisco Secure Firewall’s Intrusion Policy takes a deeper look at the packets being allowed through the firewall. youtu.be/Zm9rgrQTbIQ?...

Vacay day.

There is a lot you can accomplish operationally when using AI. In this video I explore AIOps in Security Cloud Control. youtu.be/eg9xlxNSOY8?...

The Bears might not be in it, but it’s still a party.

Let’s block some stuff! In this video, I explore Cisco Secure Firewall’s Access Control Policies: youtu.be/XwwWH0dAdK8?...

I recently got a hold of a Cisco Secure Firewall 1210CE to replace my 1010 in the lab. It was pretty simple to onboard to Security Cloud Control for cloud management. youtu.be/J63QIZJCWrY?...

Happy New Year!

I wish all my network buddies a happy and more importantly “quiet” holiday season.

My lab firewall at home is managed by a Cloud-Delivered FMC in Cisco’s Security Cloud Control. In this video I spend time upgrading it to the latest Gold Star version 7.6.2.1. youtu.be/HQwZtT5gt_E?...

Cisco Unveils a Fully Integrated, AI-Optimized Networking Vision 🤯 At #NFD39, Tom Hollingsworth breaks down @Cisco.com’s unified approach to simplifying and optimizing AI networking. #TFDTakeaways #AINetworking #DataCenter #GPUNetworking #CiscoNexus #HyperfabricAI #Networking

The use of firewalls has evolved over the years, from the perimeter to now being intertwined into the network. In this video, we do some white-boarding for some basic firewall use cases. youtu.be/yjMx5WVP5Vk?...

It’s Monday, so may your emails be way lighter than your coffee.

New episode is here. Ep 164: Oak Cliff Swipers This one is guaranteed to make your head shake in disbelief. darknetdiaries.com/episode/164

Firewalls have evolved over the years, but it has felt like a generation since the industry started using "Next Gen FW". Hybrid Mesh Firewall is what orgs are looking at now. Let’s focus on one piece of it, which is the firewall. youtu.be/-jtenKwmYG8?...

No laptop to open today.

I setup Cisco TrustSec in the lab using Identity Services Engine 3.4. With TrustSec, the focus is on segmenting with identity and not the IP address. youtu.be/9WZhE7BUjA0?...

For those running Cisco Catalyst 9800 series wireless controllers, you can run your config through the Wireless Config Analyzer for some best practices. youtu.be/Mgz85huSEwI?...

As organizations continue to deploy wireless solutions, they can’t forget about the wired side. Security is still needed on those switch ports and you should know what devices are connected. Cisco ISE can help with the visibility and control for wired devices as well. youtu.be/GlA_xW1jDdQ?...

Some hobbies can be expensive.

The Catalyst 9200L I upgraded in the lab last video, I now make the connection up to the Cisco Meraki Dashboard in order to use the Cloud CLI. youtu.be/mEEOCP1WkHI?...

Catalyst 9200L switches can be supported in the Meraki Dashboard even while running IOS-XE code. The first thing to do is upgrade to the required code: youtu.be/AqMNminqSsY?...

I was messing around with Veo 3. It’s interesting the stuff you can create from text to video. Here a cheesy security video for you :) youtu.be/AUslKFJaHKA?...

The sounds of Network Engineering.

Segmentation is not just a check box that you check and you are done. It involves different solutions, layers that you have to take into consideration. In an effort to make things dynamic and scalable, Cisco Identity Services Engine can help orgs implement TrustSec. youtu.be/BElQ_95Sg-g?...

Happy Father’s Day!

As soon as the pickup notification came…I walked over to my car and drove carefully through the streets following all rules of the road.

Last weekend I spent some time adding a Cisco Meraki MS130-12X to the lab. It will eventually replace an MS220 that is going End of Support soon. Join me for another episode of Weekend Maintenance! youtu.be/5VcuN-Mi6-8?...

Today’s schedule is cutting the grass because my neighbor cut his first and CCDE studies.

Check out this episode of Talk Time - Conversations That Matter. We spend some time talking about everyone’s favorite subject: Artificial Intelligence. youtu.be/HVTdFHK4WIg?...

Fake IT support calls hit 20 orgs, end in stolen Salesforce data and extortion, Google warns

I spent some time this Saturday doing some maintenance in the home lab. I swapped out a 3802 AP and upgraded code on the wireless controller. youtu.be/nNuas7EKp3Q?...

The weather keeps getting better! I need me some sun ☀️

Tiny coffee time!

History!

Patching and upgrades are important for a healthy <insert technology here>. This week I move the lab from Cisco ISE 3.3 to 3.4. youtu.be/w_Ae4t1wEvk?...

Cisco ISE can be used to control and manage admin access to network devices like your switches and routers. It uses TACACS+ to Authenticate, Authorize, and provide Accounting for the users who are logging into those devices. youtu.be/Q5JZQCuQaB8?...

Let the guest access fun continue! In this video, I create an SSID to be used for sponsored guest access with Cisco Identity Services Engine. youtu.be/vQF41fa4Nx0?...

Seems legit!

Happy Easter to those celebrating!