From 798f0dec03ed63c7f598e6997c2987dac8a6926e Mon Sep 17 00:00:00 2001
From: Florian Hoss <flhoit00@hs-esslingen.de>
Date: Wed, 20 Jul 2022 16:55:59 +0200
Subject: [PATCH] Update firewall.tex

---
 .../lib/Firewall/docs/firewall/firewall.tex      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/ESPFirewall/lib/Firewall/docs/firewall/firewall.tex b/ESPFirewall/lib/Firewall/docs/firewall/firewall.tex
index a830a25..9bd949c 100644
--- a/ESPFirewall/lib/Firewall/docs/firewall/firewall.tex
+++ b/ESPFirewall/lib/Firewall/docs/firewall/firewall.tex
@@ -85,4 +85,20 @@ Looking at the usage of the DMA buffer (Figure \ref{fig:WiFi Buffer}) of the dri
 
 \cite[cf.][]{espressif-wifi}
 
+\subsection{Wi-Fi Sniffer Mode}
+
+Esp32 can be setup in a ``sniffer mode''. Following packets can be dumped to the application:
+
+\begin{list}{-}{}
+    \item 802.11 Management frame.
+    \item 802.11 Data frame, including MPDU, AMPDU, and AMSDU.
+    \item 802.11 MIMO frame, for MIMO frame, the sniffer only dumps the length of the frame.
+    \item 802.11 Control frame.
+    \item 802.11 CRC error frame.
+\end{list}
+
+The same can be done with the esp8266 as described in this article: 
+
+\href{https://carvesystems.com/news/writing-a-simple-esp8266-based-sniffer/}{https://carvesystems.com/news/writing-a-simple-esp8266-based-sniffer/}
+
 \subsection{Benchmark}