qubes-doc/Qrexec2Implementation.md

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Implemention of qrexec in Qubes R2

This page describes implementation of the qrexec framework in Qubes OS R2. Note that the implementation has changed significantly in Qubes R3 (see Qrexec3Implementation), although the user API reminded backwards compatible (i.e. qrexec apps written for Qubes R2 should run without modifications on Qubes R3).

General architecture

Dom0-specific details

VM-specific details (Linux AppVMs)

VM-specific details (Windows AppVMs)

Protocol description