cs655-pw-cracker

Website: http://pcvm1-22.geni.it.cornell.edu:8080

Repo is cloned to /home/cs655-pw-cracker and start.sh is deamonized. Update by running /install.sh. To restart, run

sudo systemctl restart cs655

Instructions

On GENI, all scripts are automatically installed and the deamonized via systemctl. Note that the server node requires numpy, which can be installed as follows:

sudo apt-get update
sudo apt install python3-pip
sudo pip3 install numpy

To run locally:

To run workers: on several machines/ports run workers

cd ./src/worker/  
python worker.py --port x, where x is the port number

To run the server:

• First, edit ./src/server/workers.py to add the list of workers used. Each entry includes (hostname, port)

• Run the server:

python server.py --hash h --num_workers n

Where h is a md5 hash and n is the number of workers to used.

To run on GENI:

Create an instance, using rspec.xml GENI configuration file. Wait for all components to start running. After that follow the instructions above.

Set delays on nodes for the experiments

To change TCP Congestion Control version to Reno:

sudo sysctl net.ipv4.tcp_congestion_control=reno

To setup a specific delay time (to make sure that packets coming into the eth0 interface of any node will experience the delay):

sudo tc qdisc add dev eth0 root netem delay [time]ms

To remove the setup:

sudo tc qdisc del dev eth0 root netem

Note: we need to delete the old rules before setting up new ones. The same setup/deletion command for eth1, eth2, etc. interfaces.