{"id":100138,"date":"2021-05-11T16:22:58","date_gmt":"2021-05-11T14:22:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/microsoft-podgotovil-realizacziyu-ebpf-dlya-windows"},"modified":"2021-05-11T16:22:58","modified_gmt":"2021-05-11T14:22:59","slug":"microsoft-podgotovil-realizacziyu-ebpf-dlya-windows","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/microsoft-podgotovil-realizacziyu-ebpf-dlya-windows","title":{"rendered":"Microsoft ha preparato l'implementazione di eBPF per Windows","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Microsoft ha pubblicato l'implementazione del sottosistema eBPF per Windows, che consente l'esecuzione di gestori arbitrari a livello del kernel del sistema operativo. eBPF fornisce un interprete di bytecode integrato nel kernel, che consente la creazione di gestori di operazioni di rete caricabili dallo spazio utente, il controllo degli accessi e il monitoraggio delle operazioni di sistema. eBPF \u00e8 incluso nel kernel di Linux a partire dalla versione 3.18 e permette di elaborare pacchetti di rete in entrata\/uscita, reindirizzare pacchetti, gestire la larghezza di banda, intercettare chiamate di sistema, controllare accessi e implementare tracciamento. Grazie all'uso della compilazione JIT, il bytecode viene tradotto in istruzioni macchina in tempo reale e viene eseguito con la velocit\u00e0 di un codice compilato. I codici sorgente di eBPF per Windows sono pubblici con licenza MIT. <\/p>\n

eBPF per Windows pu\u00f2 essere utilizzato con gli strumenti esistenti per lavorare con eBPF e offre un'API standard utilizzabile per le applicazioni eBPF in Linux. Inoltre, il progetto consente la compilazione di codice scritto in C in bytecode eBPF tramite il compilatore eBPF basato su Clang e l'esecuzione di gestori eBPF gi\u00e0 creati per Linux sopra il kernel di Windows, fornendo uno strato di compatibilit\u00e0 speciale e supportando l'API Libbpf per la compatibilit\u00e0 con le applicazioni che interagiscono con programmi eBPF. Sono previste anche interfacce che offrono hook simili a Linux per XDP (eXpress Data Path) e socket bind, astrarre l'accesso allo stack di rete e ai driver di rete di Windows. Tra i piani \u00e8 prevista la fornitura di compatibilit\u00e0 completa a livello di codice sorgente con gestori eBPF standard di Linux.

\"Microsoft<\/center> <\/p>\n

La principale differenza nell'implementazione di eBPF per Windows \u00e8 l'utilizzo di un verificatore di bytecode alternativo, originariamente proposto da dipendenti di VMware e ricercatori di universit\u00e0 canadesi e israeliane. Il verificatore viene eseguito in un processo isolato separato nello spazio utente e viene applicato prima dell'esecuzione dei programmi BPF per identificare errori e bloccare eventuali attivit\u00e0 dannose. <\/p>\n

Per il controllo in eBPF per Windows viene utilizzato un metodo di analisi statica basato sull'interpretazione astratta (Abstract Interpretation), che, rispetto al verificatore eBPF per Linux, mostra un livello inferiore di falsi positivi, supporta l'analisi dei cicli e offre una buona scalabilit\u00e0. Il metodo tiene conto di numerosi schemi di esecuzione tipici, ottenuti dall'analisi di programmi eBPF esistenti. <\/p>\n

\u041f\u043e\u0441\u043b\u0435 \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0431\u0430\u0439\u0442\u043a\u043e\u0434 \u043f\u0435\u0440\u0435\u0434\u0430\u0451\u0442\u0441\u044f \u0432 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0439 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430, \u0438\u043b\u0438 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 JIT-\u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 \u0441 \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u043c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u0433\u043e \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430. \u0414\u043b\u044f \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 eBPF \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c HVCI (HyperVisor-enforced Code Integrity), \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u0432 \u044f\u0434\u0440\u0435 \u0438 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u043f\u043e \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u043f\u043e\u0434\u043f\u0438\u0441\u0438. \u041e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435\u043c HVCI \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0438\u0440\u0443\u0435\u043c\u044b\u0445 eBPF-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u0438 \u043d\u0435\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e \u0441 JIT (\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u044b\u0431\u043e\u0440 — \u043b\u0438\u0431\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u043b\u0438\u0431\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0437\u0430\u0449\u0438\u0442\u0430).
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Microsoft \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u044b eBPF \u0434\u043b\u044f Windows, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0443\u044e \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0435 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b. eBPF \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0439 \u0432 \u044f\u0434\u0440\u043e 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\u0441\u043e\u0441\u0442\u0430\u0432 \u044f\u0434\u0440\u0430 Linux \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u044b\u043f\u0443\u0441\u043a\u0430 3.18 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0435\/\u0438\u0441\u0445\u043e\u0434\u044f\u0449\u0438\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":100139,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Microsoft ha preparato un'implementazione eBPF per Windows | ProHoster","description":"Microsoft ha pubblicato un'implementazione del sottosistema eBPF per Windows, che consente di eseguire gestori arbitrari operanti a livello di kernel del sistema 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