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#Slitheen is a decoy routing system for censorship resistance. The source code consists of two parts: the client code (to be distributed and run on the machines of users wishing to circumvent censorship), and the relay station code (to be run on a relay station deployed by an ISP in the middle of the network).

#If you have any questions about the code or installation, please contact Cecylia Bocovich cbocovic@uwaterloo.ca.

INSTALLTION INSTRUCTIONS:

target=$1 if [ "$target" == "client" ]; then

#For the client:

- The client code consists of two parts: (1) an Overt User Simulator (OUS) that issues repeated requests to uncensored sites, and (2) a SOCKS proxy frontend that takes connection requests and data from the user's browser and feeds it to the OUS.

#0. Building this system requires the following dependencies: sudo apt-get install build-essential g++ flex bison gperf ruby perl
libsqlite3-dev libfontconfig1-dev libicu-dev libfreetype6 libssl-dev
libpng-dev libjpeg-dev python libx11-dev libxext-dev git

#1. Fetch all necessary git repositories: mkdir client cd client git clone git://git-crysp.uwaterloo.ca/slitheen git clone -b slitheen git://git-crysp.uwaterloo.ca/openssl git clone -b slitheen git://git-crysp.uwaterloo.ca/phantomjs

#2. Build our modified version of openssl parent_dir=pwd cd openssl ./config --prefix=$parent_dir/sslout --openssldir=$parent_dir/sslout/openssl make make test make install cd ..

#3. Build phantomJS (Note: this takes a ridiculously long time) cd phantomjs sed -i "s#sslout#$parent_dir/sslout#g" build.py ./build.py cp bin/phantomjs ../slitheen/client cd ..

#4. Build SOCKS proxy frontend cd slitheen/client make

#5. Run socks and exit to initialize OUS_out pipe ./socks

#6. Obtain public key from relay station save file as pubkey in client/ directory

elif [ "$target" == "relay" ]; then

#For the relay station:

#0. Install dependencies sudo apt-get install libpcap-dev libssl-dev git

#1. Fetch necessary git repository: git clone git://git-crysp.uwaterloo.ca/slitheen git clone -b slitheen git://git-crysp.uwaterloo.ca/openssl

#2. Build our modified version of openssl parent_dir=pwd cd openssl ./config --prefix=$parent_dir/sslout --openssldir=$parent_dir/sslout/openssl make make test make install cp ../sslout/lib/*.a ../slitheen/relay_station cd ..

#3. Generate public/private key pair cd slitheen/telex-tag-v3 make ./genkeys cp privkey ../relay_station cd ..

#4. Update slitheen.h with correct MAC addresses for client-side and world-side interfaces

If using VM setup, postpone until VM step 10.

#5. Build slitheen proxy cd relay_station make

else echo "Usage: ./INSTALL [client|relay]"

fi

VIRTUAL MACHINE SETUP

If you wish to do a test run on two virtual machines on a single host, follow these instructions

#1. Download an Ubuntu 14.04 .iso (http://releases.ubuntu.com/14.04/)

#2. Create an Ubuntu14.04 virtual machine named "slitheen_client"

#3. Create an Ubuntu14.04 virtual machine named "slitheen_relay"

#4. Install the relay and client onto their respective machines following the

installation instructions below.

#5. Go to the network settings for "slitheen_client" and change Adapter 1 to be

attached to an internal network named "slitheen_net".

#6. In the network settings for "slitheen_relay", enable Adapter 2 and attach

it to the internal network "slitheen_net". Set promiscuous mode to "allow VMs".

#7. With "slitheen_relay" running, go to the network settings, select the adapter

connected to the internal network (eth1), and manually enter the following IPv4 settings:

Address: 192.168.3.1 Netmask:255.255.255.0 Gateway: 0.0.0.0

#8. With "slitheen_client" running, go to the network settings and manually enter

the following IPv4 settings:

Address: 192.168.3.2 Netmask:255.255.255.0 Gateway: 192.168.3.1

#9. Set the DNS server to match the one for eth0 on "slitheen_relay"

#10. In relay station code file slitheen.h, set macaddr to client's MAC address and compile

#11. Restart client and test connection

ping 192.168.3.1

ping 8.8.8.8

RUN INSTRUCTIONS

#1. Run relay

ethtool -K [eth0] tso off

ethtool -K [eth0] gro off

ethtool -K [eth0] gso off

ethtool -K [eth1] tso off

ethtool -K [eth1] gro off

ethtool -K [eth1] gso off

./slitheen-proxy [interface to client] [interface to world]

#2. Run client

./ous.sh

./socks

Connect browser to localhost:1080