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Near Real-time Network Security with Open Source Tools
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Josef von Helden, Bastian Hellmann, Thomas Rossow, Ralf Steuerwald
{josef.vonhelden, bastian.hellmann,thomas.rossow,ralf.steuerwald}@hs-hannover.de
Hochschule Hannover - University of Applied Sciences and Arts
Andreas Steffen Kai-Oliver Detken, Dennis Dunekacke
andreas.steffen@hsr.ch {detken,dunekacke} @decoit.de
University of Applied Sciences in Rapperswil DECOIT GmbH
February 24, 2014
The demonstration intends to illustrate how Trusted Network Connect (TNC) Open
Source tools of multiple vendors can be combined to smartly address the complex scenario
of securing a Bring Your Own Device (BYOD) scenario. The example scenario integrates
the strongSwan!| VPN solution, developed by the University of Applied Sciences in Rap-
perswil (Switzerland), with several iron*?|tools by the Trust@HsH research group at the
University of Applied Sciences and Arts in Hanover (Germany), and the Android-IF-MAP-
Client] by DECOIT GmbH, a SME company from Bremen (Germany). The combination
of those tools allows to implement a network security solution which responds to security
incidents in near real-time. The scenario is set in a Bring Your Own Device (BYOD)
environment where employees use their own smartphones for enterprise tasks. Different
TNC IF-MAP tools are combined to enforce corporate policies affecting the employees’ An-
droid cell phone devices on initial network connection and to continuously monitor policy
conformity if behavioral changes of the devices occur.
1 Scenario Overview
The scenario for the demonstration is shown in figure [1] The strongSwan VPN gateway enables
external devices, such as the smartphone, to access the internal corporate network. In terms of
Trusted Network Connect (TNC) the strongSwan VPN gateway acts as Policy Enforcement Point
1
http: //www.strongswan.org
github.com/trustathsh
“https: //github.com/decoit/Android-IF-MAP-Client
EMP
DHCP (irondhcp)
strongSwan
VPN Gateway
ousserbe) | Ld IF-MAP irondetect
ironcontrol