full stack engineer
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Redeveloping TCP from the ground up

Written by hannes 2023-11-28

Core Internet protocols require operational experiments, even if formally specified

Traceroute

Written by hannes 2020-06-24

A MirageOS unikernel which traces the path between itself and a remote host.

Deploying authoritative OCaml-DNS servers as MirageOS unikernels

Written by hannes 2019-12-23

A tutorial how to deploy authoritative name servers, let's encrypt, and updating entries from unix services.

My 2018 contains robur and starts with re-engineering DNS

Written by hannes 2018-01-11

New year brings new possibilities and a new environment. I've been working on the most Widely deployed key-value store, the domain name system. Primary and secondary name services are available, including dynamic updates, notify, and tsig authentication.

Exfiltrating log data using syslog

Written by hannes 2016-11-05

sometimes preservation of data is useful

Re-engineering ARP

Written by hannes 2016-07-12

If you want it as you like, you've to do it yourself

Fitting the things together

Written by hannes 2016-04-24

building a simple website