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+---
+layout: wiki
+title: Qrexec2Implementation
+permalink: /wiki/Qrexec2Implementation/
+---
+
+Implemention of qrexec in Qubes R2
+==================================
+
+This page describes implementation of the [qrexec framework](/wiki/Qrexec) in Qubes OS R2. Note that the implementation has changed significantly in Qubes R3 (see [Qrexec3Implementation](/wiki/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
+--------------------