Network Archives • Helge Klein

Split-Tunnel VPN & WiFi: No Internet via IPv4 Due to Interface Priority

I had a weird issue on my laptop: whenever I connected to our company’s VPN, I lost local internet connectivity. As it turned out, this was caused by incorrect network interface priority metric settings. To spare you and my future self many frustrating hours of troubleshooting, here’s what caused it.

Adobe Acrobat & Photoshop: Network Connection Target Hosts

This post lists the internet communication targets of Adobe Acrobat Reader, Photoshop, and Creative Cloud. This post is a part of my application network connection monitoring series, a group of articles that explain how to analyze the network traffic of any Windows or macOS app.

Citrix CVAD: Network Connection Target Hosts

This post lists the internet communication targets of Citrix Virtual Apps and Desktops (formerly XenApp/XenDesktop). This post is a part of my application network connection monitoring series, a group of articles that explain how to analyze the network traffic of any Windows or macOS app.

Windows OS, Services & Apps: Network Connection Target Hosts

This post lists the internet communication targets of the Microsoft Windows operating system, including its various services and UWP apps. This post is a part of my application network connection monitoring series, a group of articles that explain how to analyze the network traffic of any Windows or macOS app.

MS Office & Teams: Network Connection Target Hosts

This post lists the internet communication targets of Microsoft Office and Teams. It is a part of my application network connection monitoring series, a group of articles that explain how to analyze the network traffic of any Windows or macOS app.

Application Network Connection Monitoring With Splunk & uberAgent

This is part 1 of my application network connection monitoring series, a group of articles that explain how to analyze the network traffic of any Windows or macOS app.

What’s New in uberAgent 2.0

The most important change in version 2.0 of uberAgent is the new architecture. In addition to that we have made many other improvements, significantly reducing the agent’s footprint while increasing the quality of the collected data. Architecture Most Splunk apps that collect data on monitored endpoints are implemented as so-called Scripted or Modular Inputs. uberAgent […]

Now you can PROVE that it’s not Citrix but the backend!

You have been there: end-users are complaining and your boss demands an explanation why “Citrix is slow” – again. You, the XenApp/XenDesktop admin, desperately look at Task Manager and Perfmon, but you cannot find a thing. Your servers are humming along quite nicely, but still: applications are slow, the system feels sluggish and logons are […]

Remote Management of Windows PCs in an Isolated Security Zone

With the advent of BYO it has become fashionable to regard PCs as untrusted devices that should be isolated in a dedicated security zone.

Benchmarking Windows 7 Offline Files Transparent Caching

Windows 7 comes with several features that promise to greatly improve file access over a WAN. One of them is version 2 of the SMB protocol, another transparent caching. This article describes how I measured their effectiveness.

WLAN Security – Beware of (Unknown) Wi-Fi Hotspots

In its issue 1/2012 German c’t magazine published an article about security in Wi-Fi networks. The authors describe how very easy it is to gain access to other people’s accounts and passwords in a world where travelers happily connect to any wireless network they can get hold of. This is a short summary of the […]

Tag: Network

Split-Tunnel VPN & WiFi: No Internet via IPv4 Due to Interface Priority

Adobe Acrobat & Photoshop: Network Connection Target Hosts

Citrix CVAD: Network Connection Target Hosts

Windows OS, Services & Apps: Network Connection Target Hosts

MS Office & Teams: Network Connection Target Hosts

Application Network Connection Monitoring With Splunk & uberAgent

What’s New in uberAgent 2.0

Now you can PROVE that it’s not Citrix but the backend!

Remote Management of Windows PCs in an Isolated Security Zone

Benchmarking Windows 7 Offline Files Transparent Caching

WLAN Security – Beware of (Unknown) Wi-Fi Hotspots

Access Denied Trying to Connect to Administrative Shares C$, D$ etc.

The Unmanageable File Server

Tag: Network

Split-Tunnel VPN & WiFi: No Internet via IPv4 Due to Interface Priority

Adobe Acrobat & Photoshop: Network Connection Target Hosts

Citrix CVAD: Network Connection Target Hosts

Windows OS, Services & Apps: Network Connection Target Hosts

MS Office & Teams: Network Connection Target Hosts

Application Network Connection Monitoring With Splunk & uberAgent

What’s New in uberAgent 2.0

Now you can PROVE that it’s not Citrix but the backend!

Remote Management of Windows PCs in an Isolated Security Zone

Benchmarking Windows 7 Offline Files Transparent Caching

WLAN Security – Beware of (Unknown) Wi-Fi Hotspots

Access Denied Trying to Connect to Administrative Shares C$, D$ etc.

Missing Sharing Tab in Folder Properties on Windows 7

The Unmanageable File Server