strongSwan

h1. PT-TLS SWIMA Client

h2. Installing the strongSwan TNC Software

First we have to install some additional Ubuntu packages needed for the strongSwan TNC build

<pre>

 sudo apt install libssl-dev libcurl4-openssl-dev sqlite3 libsqlite3-dev libjson0-dev

</pre>

Download the lastest strongSwan tarball

<pre>

wget https://download.strongswan.org/strongswan-5.6.0dr1.tar.bz2

</pre>

Unpack the tarball

<pre>

tar xf strongswan-5.6.0dr1.tar.bz2

</pre>

and change into the strongSwan build directory

<pre>

cd strongswan-5.6.0dr1

</pre>

Configure strongSwan with the following options

<pre>

./configure --prefix=/usr --sysconfdir=/etc --disable-gmp --enable-openssl --enable-tnc-imc --enable-tnccs-20 --enable-imc-os --enable-imc-swima --enable-sqlite --enable-curl

</pre>

Build and install strongSwan with the commands

<pre>

make; sudo make install

</pre>

h2. Configure the strongSwan "sw-collector" Tool

The *sw-collector* tool allows all software installation events to be collected and stored in an SQLite database. Currently only *apt* history logs generated by the *dpkg* packet manager (Debian, Ubuntu, etc.) can be parsed. Since the tool is installed in a rather unusual place together with other strongSwan executables, we define the following symbolic link

<pre>

sudo ln -s /usr/libexec/ipsec/sw-collector /usr/sbin/sw-collector

</pre>

Then we set up a clean collector database with the command

<pre>

sudo -s

mkdir /etc/pts

cat /usr/share/strongswan/templates/database/sw-collector/sw_collector_tables.sql | sqlite3 /etc/pts/collector.db

</pre>

The *sw-collector* needs some options defined in the */etc/strongswan.conf*/ configuration file

<pre>

sw-collector {

  database = sqlite:///etc/pts/collector.db

  history = /var/log/apt/history.log

  first_time = 2017-02-15T20:20:34Z

  rest_api {

    uri = https://admin-user:ietf99hackathon@tnc.example.com/api/

  }

}

</pre>

The date of the original OS installation can be found e.g. with the command

<pre>

ls -l --full-time /var/log/bootstrap.log

-rw-r--r-- 1 root root 57457 2017-02-15 12:20:34.000000000 -0800 /var/log/bootstrap.log

</pre>

Then we are ready to populate the collector database with all installation events that have already happened. Since there are usually up to 2000 software packages we reduce the debug level for the initial run

<pre>

sudo sw-collector --debug 1

First-Date: 2017-02-15T20:20:34Z, eid = 1, epoch = 1849176721

processing "/etc/lsb-release" file

operating system name is 'Ubuntu'

operating system version is '16.04 x86_64'

Last-Event: 2017-02-15T20:20:34Z, eid = 1, epoch = 1849176721

Start-Date: 2017-02-16T04:20:50Z, eid = 2, epoch = 1849176721

  Upgrade:

Start-Date: 2017-02-16T04:23:44Z, eid = 3, epoch = 1849176721

  Install:

Start-Date: 2017-02-16T04:37:48Z, eid = 4, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:17:46Z, eid = 5, epoch = 1849176721

  Upgrade:

Start-Date: 2017-07-07T13:18:15Z, eid = 6, epoch = 1849176721

Start-Date: 2017-07-07T13:18:23Z, eid = 7, epoch = 1849176721

  Purge:

Start-Date: 2017-07-07T13:19:08Z, eid = 8, epoch = 1849176721

Start-Date: 2017-07-07T13:20:01Z, eid = 9, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:20:10Z, eid = 10, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:24:09Z, eid = 11, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:41:44Z, eid = 12, epoch = 1849176721

  Install:

  Upgrade:

Start-Date: 2017-07-07T13:55:18Z, eid = 13, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:57:02Z, eid = 14, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T13:58:05Z, eid = 15, epoch = 1849176721

  Install:

  Upgrade:

Start-Date: 2017-07-07T14:01:13Z, eid = 16, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T14:02:23Z, eid = 17, epoch = 1849176721

  Install:

Start-Date: 2017-07-07T14:03:52Z, eid = 18, epoch = 1849176721

  Install:

  Upgrade:

Start-Date: 2017-07-07T14:24:12Z, eid = 19, epoch = 1849176721

  Install:

Merging:

  merged 1741 installed packages, 1741 registered in database

</pre>