Assignment 2

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diff --git a/netsec-assignment2-S4498062/exercise4/exercise4a b/netsec-assignment2-S4498062/exercise4/exercise4a
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+    # echo 1 > /proc/sys/net/ipv4/ip_forward
+    # ifconfig wlan0 down
+    # iwconfig wlan0 mode managed
+    # iwconfig wlan0 essid "NetSec Homework Net (Pol)"
+    # iwconfig wlan0 ap 48:5B:39:89:8C:10
+    # iwconfig wlan0 key 37:00:9C:49:21:61:1E:4A:1A:44:6E:2F:20
+    # ifconfig wlan0 up
+    # ifconfig wlan0 192.168.84.100
+
+You should *not* run Wireshark with root rights, but rather add yourself to the
+wireshark group (at least, that's what it told me). In any case, the pings do
+show up.
+
+I'm going to perform MITM between .10 and .62:
+
+    # arpspoof -t 192.168.84.10 192.168.84.62
+    # arpspoof -t 192.168.84.62 192.168.84.10
+
+For some reason in Wireshark I then see pings between .60 (and .100 and .100) 
+and .10 (why .60 instead of .62?).
+
+We're seeing two sets because we're playing MITM:
+
+   .10  <-----------> .100 (us) <------------> .62
+          first set               second set
+
+All packets have to be sent twice for this to work.
+