What is Hackers' Pub?

Hackers' Pub is a place for software engineers to share their knowledge and experience with each other. It's also an ActivityPub-enabled social network, so you can follow your favorite hackers in the fediverse and get their latest posts in your feed.

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We are about five minutes from starting the "Network management with PF" events.eurobsdcon.org/2025/tal tutorial at in . Slides at nxdomain.no/~peter/pf_fullday. as usual

Network Management with the OpenBSD Packet Filter Toolset (T5) EuroBSDCon 2025

The OpenBSD Packet Filter (PF) is at the core of the network management toolset available to professionals working with the OpenBSD and FreeBSD operating systems. Understanding the PF subsystem and the set of networking tools that interact with it is essential to building and maintaining a functional environment. The present session will both teach networking and security principles and provide opportunity for hands-on operation of the extensive network tools available on OpenBSD and FreeBSD in a lab environment. Basic to intermediate understanding of TCP/IP networking is expected and required for this session. Topics covered include The basics of and network design and taking it a bit further Building rulesets Keeping your configurations readable and maintainable Seeing what your traffic is really about with your friend tcpdump(8) Filtering, diversion, redirection, Network Address Translation Handling services that require proxying (ftp-proxy and others) Address tables and daemons that interact with your setup through them The whys and hows of network segmentation, DMZs and other separation techniques Tackling noisy attacks and other pattern recognition and learning tricks Annoying spammers with spamd Basics of and not-so basic traffic shaping Monitoring your traffic Resilience, High Availability with CARP and pfsync Troubleshooting: Discovering and correcting errors and faults (tcpdump is your friend) Your network and its interactions with the Internet at large Common mistakes in internetworking and peering Keeping the old IPv4 world in touch with the new of IPv6 The tutorial is lab centered and fast paced. Time allowing and to the extent necessary, we will cover recent developments in the networking tools and variations between the implementations in the OpenBSD and FreeBSD operating systems. Participants should bring a laptop for the hands on labs part and for note taking. The format of the session will be compact lectures interspersed with hands-on lab excercises based directly on the theory covered in the lecture parts. This session is an evolutionary successor to previous sessions. Slides for the most recent version of the PF tutorial session are up at https://nxdomain.no/~peter/pf_fullday.pdf, to be updated with the present version when the session opens.

events.eurobsdcon.org

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📢 The Interop 2026 proposal window is closing later today!

122 proposals have been created: github.com/web-platform-tests/

Is anything missing from that list? Are there critical building blocks of the web which you need to work the same in all browsers?

If so, add it, or vote for it with a 👍!

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@inclusivedesign24Inclusive Design 24 (#id24) is one of the best conferences on accessibility and inclusivity in design and development. And it's streamed for free on YouTube.

This year's conference is live right now! And there are some really amazing talks lined up. inclusivedesign24.org/2025/sch

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Oh nein!

ⓘ 𝘛𝘩𝘪𝘴 𝘶𝘴𝘦𝘳 𝘪𝘴 𝘴𝘶𝘴𝘱𝘦𝘤𝘵𝘦𝘥 𝘰𝘧 𝘣𝘦𝘪𝘯𝘨 𝘱𝘢𝘳𝘵 𝘰𝘧 𝘢 𝘵𝘦𝘳𝘳𝘰𝘳𝘪𝘴𝘵 𝘰𝘳𝘨𝘢𝘯𝘪𝘻𝘢𝘵𝘪𝘰𝘯 𝘤𝘢𝘭𝘭𝘦𝘥 𝘈𝘯𝘵𝘪𝘧𝘢. 𝘗𝘭𝘦𝘢𝘴𝘦 𝘳𝘦𝘱𝘰𝘳𝘵 𝘢𝘯𝘺 𝘴𝘶𝘴𝘱𝘪𝘤𝘪𝘰𝘶𝘴 𝘣𝘦𝘩𝘢𝘷𝘪𝘰𝘳.

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Oh nein!

ⓘ 𝘛𝘩𝘪𝘴 𝘶𝘴𝘦𝘳 𝘪𝘴 𝘴𝘶𝘴𝘱𝘦𝘤𝘵𝘦𝘥 𝘰𝘧 𝘣𝘦𝘪𝘯𝘨 𝘱𝘢𝘳𝘵 𝘰𝘧 𝘢 𝘵𝘦𝘳𝘳𝘰𝘳𝘪𝘴𝘵 𝘰𝘳𝘨𝘢𝘯𝘪𝘻𝘢𝘵𝘪𝘰𝘯 𝘤𝘢𝘭𝘭𝘦𝘥 𝘈𝘯𝘵𝘪𝘧𝘢. 𝘗𝘭𝘦𝘢𝘴𝘦 𝘳𝘦𝘱𝘰𝘳𝘵 𝘢𝘯𝘺 𝘴𝘶𝘴𝘱𝘪𝘤𝘪𝘰𝘶𝘴 𝘣𝘦𝘩𝘢𝘷𝘪𝘰𝘳.

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진공관 중에서 최후기형 제품인 Nuvistor는 상당히 작은 크기를 가진 진공관 입니다. 반도체 기술이 성숙하지 않던 1960년대 시절 크기 대비 좋은 성능을 가지고 있었다고 합니다. 이후 반도체 기술이 발전하면서 1971년에 생산이 종료되었다고 합니다.

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ⓘ 𝘛𝘩𝘪𝘴 𝘶𝘴𝘦𝘳 𝘪𝘴 𝘴𝘶𝘴𝘱𝘦𝘤𝘵𝘦𝘥 𝘰𝘧 𝘣𝘦𝘪𝘯𝘨 𝘱𝘢𝘳𝘵 𝘰𝘧 𝘢 𝘵𝘦𝘳𝘳𝘰𝘳𝘪𝘴𝘵 𝘰𝘳𝘨𝘢𝘯𝘪𝘻𝘢𝘵𝘪𝘰𝘯 𝘤𝘢𝘭𝘭𝘦𝘥 𝘈𝘯𝘵𝘪𝘧𝘢. 𝘗𝘭𝘦𝘢𝘴𝘦 𝘳𝘦𝘱𝘰𝘳𝘵 𝘢𝘯𝘺 𝘴𝘶𝘴𝘱𝘪𝘤𝘪𝘰𝘶𝘴 𝘣𝘦𝘩𝘢𝘷𝘪𝘰𝘳.

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New ISA proposal: UTF-8 instructions

* variable width but you can count leading bits in the decoder to quickly find out how wide an instruction is
* use zero-width joiners to attach modifiers, e.g. atomic add is “lock zwj add”
* self-synchronizing means it’s easy to disassemble and you can’t jump to the middle of an instruction
* emoji

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Let's get this out of the way: the advantage from the bond trading algorithm doesn't come from a quantum advantage.

It either comes from (non-reproducible) luck or a better algorithm, and not something you wouldn't be able to do classically.

“Working with a team from IBM, HSBC leveraged an approach that utilised quantum and classical computing resources to deliver up to a 34 percent improvement in predicting how likely a trade would be filled at a quoted price"

hsbc.com/news-and-views/news/m

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