From 5667cc3df79242093f6fe56521785b7b28b45005 Mon Sep 17 00:00:00 2001
From: Camil Staps
Date: Tue, 13 Oct 2015 20:59:20 +0200
Subject: Assignment 5

---
 netsec-assignment5-S4498062/exercise4 | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 netsec-assignment5-S4498062/exercise4

(limited to 'netsec-assignment5-S4498062/exercise4')

diff --git a/netsec-assignment5-S4498062/exercise4 b/netsec-assignment5-S4498062/exercise4
new file mode 100644
index 0000000..6df780b
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+++ b/netsec-assignment5-S4498062/exercise4
@@ -0,0 +1,6 @@
+The firewall can keep track of the source and destination IPs and ports for
+out-going UDP packets. Then, when an UDP packet comes in, it can check of these
+same data (though source and destination are swapped) match somewhere in the
+table of outgoing packets. If there is a match, the firewall may assume the
+incoming packet is a response - and accept it - otherwise, it may drop it.
+
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