| 189 | | For this experiment we will run an !OpenFlow Firewall. |
| 190 | | |
| 191 | | [[Image(http://groups.geni.net/geni/raw-attachment/wiki/GENIExperimenter/Tutorials/OpenFlowNetworkDevices/Firewall/Firewall-2.png, 50%, nolink)]] |
| 192 | | |
| 193 | | {{{ |
| 194 | | #!html |
| 195 | | |
| 196 | | |
| 197 | | |
| 198 | | |
| 199 | | <table border="0"> |
| 200 | | <tr> |
| 201 | | <td > |
| 202 | | <ol type="a"> |
| 203 | | <li>Log into <tt>switch</tt> and run the following commands to download and run the firewall controller: |
| 204 | | <pre> |
| 205 | | sudo apt-get install python-pip python-dev libxml2-dev libxslt-dev zlib1g-dev |
| 206 | | sudo pip install oslo.config |
| 207 | | </pre> |
| 208 | | </li> |
| 209 | | <li> |
| 210 | | Run a simple learning switch controller: |
| 211 | | <pre> |
| 212 | | cd /tmp/ryu |
| 213 | | ./bin/ryu-manager --verbose ryu/app/simple_switch.py |
| 214 | | </pre> |
| 215 | | </li> |
| 216 | | <li> Verify simple connectivity by logging into <tt>right</tt> ping <tt>left</tt> |
| 217 | | <pre> |
| 218 | | ping left |
| 219 | | </pre> |
| 220 | | Notice the printouts of the ryu simple switch controller. |
| 221 | | </li> |
| 222 | | <li> |
| 223 | | Stop your controller by Ctrl-c and remove all your flows |
| 224 | | <pre> |
| 225 | | sudo ovs-ofctl del-flows br0 |
| 226 | | </pre> |
| 227 | | <li> Make your switch into a firewall by downloading and running the appropriate Ryu controller: |
| 228 | | <pre> |
| 229 | | wget http://www.gpolab.bbn.com/exp/OpenFlowExampleExperiment/ryu/gpo-ryu-firewall.tar.gz |
| 230 | | tar xvfz gpo-ryu-firewall.tar.gz |
| 231 | | cd gpo-ryu-firewall/ |
| 232 | | /tmp/ryu/bin/ryu-manager simple_firewall.py |
| 233 | | </pre> |
| 234 | | <b> WARNING </b> If at some point your controller prints an error, kill it (ctrc-c) and start it again. |
| 235 | | </li> |
| 236 | | <li>Log into <tt>right</tt> and run a <tt>nc</tt> server: |
| 237 | | <pre> |
| 238 | | nc -l 5001 |
| 239 | | </pre> |
| 240 | | </li> |
| 241 | | <li>Log into <tt>left</tt> and run a <tt>nc</tt> client: |
| 242 | | <pre> |
| 243 | | nc 10.10.11.1 5001 |
| 244 | | </pre></li> |
| 245 | | <li>Type some text in <tt>left</tt> and it should appear in <tt>right</tt> and vise versa.</li> |
| 246 | | <li>In the terminal for <tt>switch</tt> you should see messages about the flow being passed or not: |
| 247 | | <pre> |
| 248 | | Extracted rule {'sport': '57430', 'dport': '5001', 'sip': '10.10.10.1', 'dip': '10.10.11.1'} |
| 249 | | Allow Connection rule {'dport': '5001', 'dip': '10.10.11.1', 'sip': '10.10.10.1', 'sport': 'any'} |
| 250 | | </pre> |
| 251 | | </li> |
| 252 | | <li><tt>CTRL-C</tt> to kill <tt>nc</tt> in each terminal. </li> |
| 253 | | <li>Run a <tt>nc</tt> server on port 5002, then 5003. |
| 254 | | <ul> |
| 255 | | <li> Compare the observed behavior to the contents of <tt>~/gpo-ryu-firewall/fw.conf</tt>. <i>Does the behavior match the configuration file?</i> |
| 256 | | <li> Stop the Firewall controller and run a simple switch controller. Is there any traffic being blocked now? Don't forget to delete the flows after you stop the controller</li> |
| 257 | | <li> Feel free to modify the configuration file to allow more traffic.</li> |
| 258 | | </ul> |
| 259 | | |
| 260 | | </ol> |
| 261 | | }}} |
| 262 | | |
| 263 | | = [.. Return to the main page] = |
