diff --git a/CHANGELOG.md b/CHANGELOG.md
index d76f8c80..7e04752e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -58,9 +58,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     reservations page (#336).
   - Hide users disclosure from jobs filters panel when authentication is
     disabled (#330).
-- docs: Mention requirement of `SLURMRESTD_SECURITY=disable_user_check`
-  environment variable definition in `slurmrestd` service drop-in configuration
-  override (#320).
+- docs:
+  - Mention requirement of `SLURMRESTD_SECURITY=disable_user_check` environment
+    variable in `slurmrestd` service drop-in configuration override (#320).
+  - Fix protocols section in architecture page to mention Slurm internal
+    authentication mechanism (with `sackd`) and clarify that `munge` is not
+    involved between Slurm-web agent and `slurmrestd`.
 
 ## [3.1.0] - 2024-07-03
 
diff --git a/docs/modules/overview/images/arch/slurm-web_protocols.png b/docs/modules/overview/images/arch/slurm-web_protocols.png
index 0ef8e7e4..63cc77a1 100644
Binary files a/docs/modules/overview/images/arch/slurm-web_protocols.png and b/docs/modules/overview/images/arch/slurm-web_protocols.png differ
diff --git a/docs/modules/overview/images/arch/slurm-web_protocols.svg b/docs/modules/overview/images/arch/slurm-web_protocols.svg
index 32624fb5..e8f8d1af 100644
--- a/docs/modules/overview/images/arch/slurm-web_protocols.svg
+++ b/docs/modules/overview/images/arch/slurm-web_protocols.svg
@@ -29,10 +29,10 @@
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      fit-margin-bottom="0"
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-     inkscape:cx="426.89179"
-     inkscape:cy="144.33314"
-     inkscape:window-width="1920"
-     inkscape:window-height="1136"
+     inkscape:cx="843.17558"
+     inkscape:cy="137.90405"
+     inkscape:window-width="3840"
+     inkscape:window-height="2096"
      inkscape:window-x="0"
      inkscape:window-y="0"
      inkscape:window-maximized="1"
@@ -168,6 +168,13 @@
        y="22.489582"
        rx="2.6105554"
        ry="2.7781224" />
+    <rect
+       style="opacity:0.3;fill:#6faf40;fill-opacity:1;stroke-width:0.424264;stroke-linecap:round;stroke-linejoin:round"
+       id="rect5299"
+       width="30.427082"
+       height="31.75"
+       x="83.34375"
+       y="37.041668" />
     <rect
        style="opacity:0.3;fill:#9c21ac;fill-opacity:1;stroke-width:0.612905;stroke-linecap:round;stroke-linejoin:round"
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@@ -176,11 +183,11 @@
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     <rect
-       style="opacity:0.3;fill:#c38a1c;fill-opacity:1;stroke-width:0.612905;stroke-linecap:round;stroke-linejoin:round"
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        id="rect1373"
-       width="63.499996"
+       width="30.427082"
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@@ -597,14 +604,25 @@
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     <text
        xml:space="preserve"
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-       y="67.564064"
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+       x="116.51379"
+       y="67.094521"
        id="text22878"><tspan
          sodipodi:role="line"
          id="tspan22876"
-         style="font-size:4.23333px;stroke-width:0.264583;fill:#775b25;fill-opacity:1"
-         x="108.59687"
-         y="67.564064">Munge</tspan></text>
+         style="font-size:3.52778px;fill:#775b25;fill-opacity:1;stroke-width:0.264583"
+         x="116.51379"
+         y="67.094521">auth/{munge,slurm}</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-size:3.52778px;line-height:1.25;font-family:Lato;-inkscape-font-specification:Lato;fill:#325d17;fill-opacity:1;stroke-width:0.264583"
+       x="87.283653"
+       y="67.11216"
+       id="text5303"><tspan
+         sodipodi:role="line"
+         id="tspan5301"
+         style="font-size:3.52778px;fill:#325d17;fill-opacity:1;stroke-width:0.264583"
+         x="87.283653"
+         y="67.11216">rest_auth/local</tspan></text>
   </g>
 </svg>
diff --git a/docs/modules/overview/pages/architecture.adoc b/docs/modules/overview/pages/architecture.adoc
index 59a8ef87..b093f4cd 100644
--- a/docs/modules/overview/pages/architecture.adoc
+++ b/docs/modules/overview/pages/architecture.adoc
@@ -67,16 +67,18 @@ initial authentication with LDAP directory, users are authenticated between
 these components with https://jwt.io/[JSON Web Token] (JWT).
 
 Communications between *agent* component and Slurm `slurmrestd` daemon are
-performed with HTTP protocol over a Unix socket.
+performed with HTTP protocol over a Unix socket. For security reasons
+`slurmrestd` checks the *agent* runs with the same UID/GID as itself with its
+`rest_auth/local` plugin.
 
-NOTE: Slurm `slurmrestd` supports incoming connections on TCP/IP sockets but
-this configuration is not yet supported by Slurm-web. This is currently a
-limitation in Slurm-web that might change in the future (see
+NOTE: Slurm `slurmrestd` supports incoming connections on TCP/IP sockets with
+`rest_auth/jwt` plugin but this configuration is not yet supported by Slurm-web.
+This is currently a limitation in Slurm-web that might change in the future (see
 https://github.com/rackslab/Slurm-web/issues/313[#313]).
 
 Slurm components communicates with specific binary RPC protocol over TCP/IP
-sockets. Communications between the *agent* and Slurm components are secured
-and user are authenticated with https://dun.github.io/munge/[Munge].
+sockets, secured by either https://dun.github.io/munge/[Munge] or
+https://slurm.schedmd.com/authentication.html#slurm[Slurm internal mechanism].
 
 [#multiclusters]
 == Multi-clusters Distribution