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gjf

196 karma · joined October 11, 2021

Network Security type person. https://articles.foletta.org
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gjf··on The Journey Before main()
For those interested, I did a breakdown of the hashbang: https://blog.foletta.net/post/2021-04-19-what-the/
gjf··on Simulating and Visualising the Central Limit Theorem
Op here, no AI generated code, I'm wondering what gives the impression that it is?

I use Rmarkdown, so the code that's presented is also the same code that 'generates' the data/tables/graphs (source: https://github.com/gregfoletta/articles.foletta.org/blob/pro...).

gjf··on Simulating and Visualising the Central Limit Theorem
Very much an inspiration and resource when composing the post.
gjf··on Simulating and Visualising the Central Limit Theorem
Author here; I think I understand where you might be coming from. I find functional nature of R combined with pipes incredibly powerful and elegant to work with.

OTOH in a pipeline, you're mutating/summarising/joining a data frame, and it's really difficult to look at it and keep track of what state the data is in. I try my best to write in a way that you understand the state of the data (hence the tables I spread throughout the post), but I do acknowledge it can be inscrutable.

gjf··on The Real Origin of Cisco Systems (1999)
Oh god, it wasn’t ASDM for the ASA was it? Always one Java update away from not being able to manage your firewalls
gjf··on A Day in the Life: The Global BGP Table
The direct peering to the router is likely going to have a bad time, but route advertisement interval I mention in the article is going to coalesce all of those updates together. Downstream peers would only see the one update every 30 seconds (or so).
gjf··on TCP connection timeout mystery
First off, the HTTP HTTP 301s to the HTTPS site, so HTTPS is still the likely trigger.

Second, I see that whatever client he's using is specifying a very old TLS 1.0. If its not MTU (which others have mentioned), then my guess would be a firewall with a policy specifying a minimum TLS version, and dropping this connection on the floor.

gjf··on In a Git repository, where do your files live?
I tried to do something similar: https://articles.foletta.org/post/git-under-the-hood/
gjf··on Ask HN: What's Your Personal Motto?
Strength with empathy
gjf··on David Boggs has died
Short answer is: it doesn't. When designing networks you will try to reduce the scope of layer 2 broadcast domains.