3. The Experiment
Prev |  | Next

## 3. The Experiment

Here is the experiment:

1. Open a window to an IPsec host and another window to an insecure host.

2. Now start capturing packets.

3. In the “secure” window, run the UNIX® command yes(1), which will stream the `y` character. After a while, stop this. Switch to the insecure window, and repeat. After a while, stop.

4. Now run MUST on the captured packets. You should see something like the following. The important thing to note is that the secure connection has 93% (6.7) of the expected value (7.18), and the “normal” connection has 29% (2.1) of the expected value.

   `%` `tcpdump -c 4000 -s 10000 -w `ipsecdemo.bin`` `%` `uliscan `ipsecdemo.bin`` Uliscan 21 Dec 98 L=8 256 258560 Measuring file ipsecdemo.bin Init done Expected value for L=8 is 7.1836656 6.9396 -------------------------------------------------------- 6.6177 ----------------------------------------------------- 6.4100 --------------------------------------------------- 2.1101 ----------------- 2.0838 ----------------- 2.0983 -----------------

Prev |  | Next
2. The Solution | Home | 4. Caveat

This, and other documents, can be downloaded from http://ftp.FreeBSD.org/pub/FreeBSD/doc/

For questions about FreeBSD, read the documentation before contacting <questions@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.