Networking With Ehsan

Cisco Secure Analytics (Stealthwatch) Explained: NDR for Modern Enterprise Networks

In this episode of the Tech Lounge series, we explored one of the most important network security solutions: NDR – Network Detection & Response.
We reviewed the architecture of Cisco Secure Analytics (SNA) — formerly known as Stealthwatch — analyzed common customer challenges, and explained how network traffic analytics can detect malicious behavior even without signatures.
🔍 Topics we covered:
• What is NDR and why is it critical today?
• SNA architecture and components (Flow Collector, Flow Sensor, UDP Director, etc.)
• The role of telemetry and NetFlow in security visibility
• A brief demo of the SNA environment

19Oct

Inside Cisco SD-WAN: How Modern WAN Automation Works

In this episode, we explore Cisco SD-WAN — one of the most modern and widely used enterprise networking solutions in the world.
We’ll explain how SD-WAN separates the control and data planes, how it simplifies and secures connectivity between branch locations, and how, using vManage, vBond, and vSmart, it automates policy and routing management.
If you’re looking for a real understanding of an automated, policy-driven, and secure WAN, this episode is for you!

12Oct

Inside SD-Routing: Cisco’s Next-Gen Approach to Smarter Networks

What exactly is SD-Routing, and why is Cisco betting big on it?
In this episode, we unpack how SD-Routing merges traditional routing with cloud-age intelligence, and what makes Cisco’s Gen 2 Routers the perfect platform for it.

05Oct

QUIC: Performance Revolution or Security Blind Spot?

In the fourth episode of Ehsan’s Tech Lounge Podcast, we explore how HTTP/3 powered by QUIC promises blazing-fast connections and a better user experience — but also introduces new visibility and inspection challenges for security vendors. We trace the evolution of HTTP protocols, unpack the architectural benefits of QUIC, and ask the critical question: Can our firewalls keep up? Join us as we analyze how vendors are tackling decryption, telemetry, and detection inside encrypted QUIC traffic

28Sep

Why Firewall Sizing & Decryption Matter | Data-Center Security with MACsec

In this technical episode S1E3 we cover two tightly related topics: why firewall sizing — especially CPU capacity for TLS/SSL decryption — matters for detection and prevention, and how enabling MACsec on data-center links stops many MITRE ATT&CK techniques based on sniffing and frame injection.

21Sep

From Firewalls to Smart Switches: How DPUs Are Changing Security

In this episode, we dive into the next generation of networking and security — exploring Data Processing Units (DPUs), Cisco Hypershield, and Nexus 9300 Smart Switches.

15Sep

Cisco HyperFabric AI

We introduce Cisco HyperFabric AI—covering architecture, benefits, and learning paths for engineers entering AI infrastructure.