• Network assessment with policy-based QoS and iperf3

    In Skype for Business and, more recently, Teams deployments, a solid network and a good knowledge of it are fundamentally important. We typically work very closely with the network/security departments and make sure to involve them from the beginning to have their support throughout the project. After deploying QoS, ideally before rolling out voice/video for the end-users, we run some tests to verify the QoS configuration, measure the reserved bandwidth and whether it remains stable over some amount of time. There are various tools available for this task, I mostly use iperf3 to generate traffic and measure basic parameters.

  • Exchange Hybrid Observations

    Like I did here with Skype for Business, I’m collecting some observations and useful snippets about Exchange in hybrid environments.

  • lost & found: Updates and no more tracking on

    I’ve recently updated the sources of the blog and moved to the gem-based version of the minima theme. This should make the site easier to maintain in the future.

  • Azure Functions: Building a Telegram Bot with PowerShell 2

    Welcome back to the second part of our little fun experiment with Telegram and Azure Functions. In the first part we created the function app and the bot, now let’s hook them up.

  • Azure Functions: Building a Telegram Bot with PowerShell 1

    Today I’ve got a fun one, we’re going to use Azure Functions to build a Telegram Bot with PowerShell. Sounds interesting? Well here we go. Before diving into the technical details, lets have a quick overview of what we’re trying to do.

  • lost & found: ntSystems Onion Service, Cloudflare DNS

    It’s Friday and here’s another edition of lost & found.

  • Skype for Business Hybrid Observations

    A collection of information about Skype for Business in hybrid environments.

  • Azure AD Connect: Failed to load configuration information

    When upgrading Azure AD Connect (ADSync), the wizard fails with the error: “Failed to load configuration information from primary ADFS server”.

  • Tunneling SSH through Tor

    I’ve been using Onion Services aka. Hidden Services to connect to remote machines for some time now. Tor clients can connect to such services through the Tor network, there is no need to know the IP address of the destination machine, likewise there is no need to configure inbound port mappings or firewall rules.

  • Testing CoinHive

    I’ve recently stumbled upon coinhive and with all the recent fuzz about crypto currencies, I decided to have a look at it. So what’s that all about?