Technical notes, my online memory
Thursday, June 3, 2021
Quick summary of the cybersecurity executive order
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Exec order is here , fact sheet summary . Good analysis from lawfare blog here . Share info on incidents (anything that impacts CIA accor...
Wednesday, May 12, 2021
Debug logs for nest wifi and google wifi
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There are no logs available in the app, but there's quite a lot available from the diagnostic report API. It's in protobuf format, ...
Friday, August 21, 2020
DNS CNAME at the root of a domain
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TIL about DNS CNAME "flattening" which is a cloudflare feature that allows you to put a CNAME at the domain root: something that ...
Monday, May 25, 2020
Measuring internet bandwidth in a cron script speedtest.net
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This is a simple way to keep tabs on bandwidth provided by your ISP. It's also useful as a historical record to prove exactly when servi...
Thursday, January 2, 2020
Gatekeeper, OPA, rego: notes from testing and debugging policies
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Installing gatekeeper is easy: kubectl apply -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/master/deploy/gatekeeper.ya...
Monday, December 30, 2019
Vim regex examples
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# Put a quote in front of the first alphabetic character on each line s!\([a-z]\)!"\1!c
Sunday, March 24, 2019
Finding DNS servers provided by DHCP using network manager on Linux
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Suppose you want to figure out which DNS server you're using and it is provided via DHCP. This can be surprisingly difficult. Suppose th...
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