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🛡️Viftrups Security Blog
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How To Create a Windows 11 Node for Cisco CML

Alexander Viftrup Andersen published on 2026-01-11
Learn how to create a fully functional Windows 11 image for Cisco Modeling Labs (CML). This guide walks you through building a QCOW2 ‘golden image' for Windows 11, configuring the installation and updating the necessary drivers plus integrating the node into your CML lab environment.
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 CML, Windows, Lab
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Using Certbot to provision a public certificate and auto-populate DNS records in Cloudflare

Alexander Viftrup Andersen published on 2025-04-28
Learn how to use Certbot with Cloudflare’s DNS‑01 challenge to automatically create TXT records and generate publicly trusted certificates, including wildcard certs.
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 Certbot, Cloudflare

Branch deployment using templates on Cisco FTD - including API registration

Alexander Viftrup Andersen published on 2024-10-09
Streamline zero‑touch Cisco FTD branch deployments, even with SD‑WAN integration. Automate FMC registration using templates and custom variables via API.
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 Secure Firewall, Security, API
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Remote password recovery for admin user on Secure Firewall Threat Defense

Alexander Viftrup Andersen published on 2023-10-09
It is required that you're able to push platform setting policies to the device(s) and possibility for external SSH authentication either through LDAP or RADIUS in order to perform this kind of recovery
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What is the nlp_int_tap interface and its functionality

Alexander Viftrup Andersen published on 2023-09-03
Do you actually know what all the interfaces present on your Cisco ASA or FTD installation are doing behind the scenes? In this post we will dig into the details and reasoning behind nlp_int_tap interface and non-LINA processes.
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 Secure Firewall, Security
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Maintain Secure Client configurations and package management with SecureX

Alexander Viftrup Andersen published on 2023-07-24
This article is outdated as SecureX has reached EoL. Last year, Cisco rebranded their famous and widely known VPN product, AnyConnect, into the Cisco Secure Client (CSC).
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 Secure, Client, SecureX, Security
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