Articles by James Chapman

  1. ProL2TP Debugging: Part 2 - Improving Debug Features

    Tue 05 November 2013
    By James Chapman

    ProL2TP has a flexible debug system. In this, the last of two articles, I discuss the improvements that were made in our 1.6 release which help operators configure the debug system.

  2. ProL2TP Debugging: Part 1 - Debug Features

    Mon 09 September 2013
    By James Chapman

    ProL2TP has a flexible debug system. In this, the first of two articles, I describe the debug features and how to use them to diagnose problems.

  3. L2TP protocol extensibility - good or bad?

    Fri 14 June 2013
    By James Chapman

    This article asks whether the L2TP protocol designers made a mistake when they allowed for vendor-specific extensions in protocol implementations. Could this lead to L2TP interoperability problems?

  4. ProL2TP Profile Selection Rules

    Tue 02 April 2013
    By James Chapman

    ProL2TP configuration profiles are a flexible way to manage common sets of configuration parameters. In this article I delve into how to use them as parameter selectors for incoming L2TP sessions.

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