Marcel Waldvogel

Netfuture: The future is networked

  • Blog
    • Blog
    • Blockchain critique
  • Publications
  • Open Source Software
    • TLS Interposer
    • Automatic SOGo configuration for iOS (iPhone/iPad) and MacOSX
    • vcard4-ts: vCard version 4 parsing, TypeScript-style
    • fake-super: Recover rsync attributes
    • dnstemple: DNS with Templates
  • Tutorials
    • Tutorial: Cyclic Redundancy Check (CRC) Computation
      • Background: Asynchronous Serial Communications (RS-232C)
      • Parity Bits
      • Checksums
      • Intermission: Classes of errors
      • Check Digits
      • Error Correction Codes (ECC)
      • Cyclic Redundancy Check sequences (CRC): A Big Mystery?
      • CRC Hardware Operation
      • Software CRC Computation
      • Mathematical Background
      • Polynomial view
  • About
    • Deutsch
    • English
  • Efficient hash tables for network applications

    Efficient hash tables for network applications

    2015-05-15
  • DNSSEC for .ch domains

    DNSSEC for .ch domains

    This year, all owners of .ch domains need to switch from the DNS registry SWITCH to a new registrar. Getting an overview over these registrars is hard. Thankfully, Marc Wäckerlin has started the road to transparency with a price comparison of Swiss .ch domain registrars. Here, I extend his results with a survey of DNSSEC…

    2015-04-02
  • Automatic svn file addition/removal

    Automatic svn file addition/removal

    You have files under version control, which are updated through a different mechanism (software update, another VCS such as git, …) or are using svn to archive automatically generated files? Then you are likely to constantly manually determine the appropriate svn add and svn rm commands. This can be automated…

    2015-03-22
  • svn log message updating script

    svn log message updating script

    Here is a simple script to allow updating your Subversion commit messages and have the repository admins receive a nice email message with the change.

    2015-03-08
  • VirtualBox DHCP nameserver for NAT network

    VirtualBox DHCP nameserver for NAT network

    VirtualBox is a great environment for testing networking tools such as opDNS. However, I did not get the VirtualBox DHCP server for NAT network to provide nameserver information, even though the client asks for it. Here’s a simple solution to this problem.

    2015-03-07
  • Compact Archives Widget for WordPress

    Compact Archives Widget for WordPress

    The standard Archives Widget looks like the image right here. It works well when only a few months are to be displayed. However, it fails if your blog’s history goes back a long way. Here is a  quick way to get down from 12 lines per year to 1, increasing usability and page size.

    2015-02-21
  • Stateless DNS

    Stateless DNS

    2014-12-31
  • Boost DNS Privacy, Reliability, and Efficiency with opDNS Safe Query Elimination

    Boost DNS Privacy, Reliability, and Efficiency with opDNS Safe Query Elimination

    2014-12-11
  • A Multicast-Avoiding Privacy Extension for the Avahi Zeroconf Daemon

    A Multicast-Avoiding Privacy Extension for the Avahi Zeroconf Daemon

    2014-12-11
  • JSXC: Adding Encrypted Chat with 3 Lines of Code

    JSXC: Adding Encrypted Chat with 3 Lines of Code

    2014-12-11
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