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Yaroslav Polyakov profile picture

Yaroslav Polyakov

Linux (since 1997), networking, security (penetration testing, audits). Big fan of Jamstack and modern static websites. I enjoy creating new tools to myself and share it with community

Location Novosibirsk, Russia Joined Joined on  Personal website https://github.com/yaroslaff/ github website

Work

Founder of www-security.com (mostly freelance), ready for hire.

Your own Certificate Authority (CA) in ONE simple command

Your own Certificate Authority (CA) in ONE simple command

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1 min read

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Great design trick I learned in X.509 (critical extension)

Great design trick I learned in X.509 (critical extension)

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1 min read
Simple decorator to retry after exception

Simple decorator to retry after exception

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apache2 allows CORS with credentials for any address

apache2 allows CORS with credentials for any address

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Mix static & client-side rendering on same page with SvelteKit

Mix static & client-side rendering on same page with SvelteKit

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Shell oneliner to generate passwords

Shell oneliner to generate passwords

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Drop [almost] all outbound mail in postfix for tests

Drop [almost] all outbound mail in postfix for tests

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How to get country by IP address

How to get country by IP address

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Every C program has main()? (False)

Every C program has main()? (False)

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apt-file: which deb package to install to get X?

apt-file: which deb package to install to get X?

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fail2ban regex works as CLI param, but not as file (Solution)

fail2ban regex works as CLI param, but not as file (Solution)

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Svelte-kit (vite) with HMR over NGINX (Solution)

Svelte-kit (vite) with HMR over NGINX (Solution)

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Create-react-app and apt freezes + script to enable/disable IPv6

Create-react-app and apt freezes + script to enable/disable IPv6

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sql-export - create .md / .json files from database content

sql-export - create .md / .json files from database content

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ws-emit: easy websocket microservice

ws-emit: easy websocket microservice

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topip: who abusing your server?

topip: who abusing your server?

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evalidate: secure eval() for python

evalidate: secure eval() for python

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showcert: human-friendly openssl

showcert: human-friendly openssl

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My first post

My first post

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1 min read
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