path: root/tools/network.html



<!DOCTYPE html>
<html dir="ltr" lang="en">
    <head>
        <meta charset='utf-8'>
        <title>Network Tools</title>
    </head>
    <body>

        <a href="index.html">Tools Index</a>

        <h1>Network Tools</h1>

        <p>This document and others under tools extend
        <a href="../core/network.html">core network</a>
        witch allow to connect to the internet in the most
        common environments. Follow documents allow to configure
        tap interfaces for virtual machines, audit network,
        dns cache and encryption, etc.</p>

        <p>On core is configured a sub-domain from
        <a href="http://freedns.afraid.org">afraid.org</a>,
        <a href="https://freedns.afraid.org/dynamic/v2/">generate cron job</a>
        to update ip every 5 minutes, check
        <a href="https://freedns.afraid.org/dynamic/v2/tips/">about dynamic interface</a>. To run as system cron job add as root and remove path line from example;</p>
        <pre>
        # crontab -e
        </pre>

        <p>Example from afraid uses curl and will log output to /tmp/freedns*,
        change to /var/log/freedns</p>

        <h2 id="bridge">Bridges</h2>

        <p>For more information about bridges read
        <a href="http://ebtables.netfilter.org/br_fw_ia/br_fw_ia.html#section7">bridges with iptables</a>.
        Script <a href="conf/etc/rc.d/blan">/etc/rc.d/blan</a> creates br0 bridge interface
        with 10.0.0.1 ip. Number of tap interfaces created and attached depends on number
        of cpu cores available. Ethernet interface is added to the bridge. Edit /etc/rc.conf
        to setup interfaces at startup;</p>

        <pre>
        #
        # /etc/rc.conf: system configuration
        #

        FONT=default
        KEYMAP=dvorak
        TIMEZONE="Europe/Lisbon"
        HOSTNAME=c9
        SYSLOG=sysklogd
        SERVICES=(lo iptables wlan blan crond)

        # End of file
        </pre>

        <p>Change iptables init script
        <a href="../core/conf/rc.d/iptables">/etc/rc.d/iptables</a>
        to load new rules from
        <a href="../core/conf/iptables/br-lan.v4">/etc/iptables/br-lan.v4</a>.
        Now change <a href="../core/scripts/iptables-br.sh">iptables-br.sh</a>
        with your network configuration and run;
        </p>

        <pre>
        # bash core/scripts/iptables-br.sh
        </pre>

        <a href="index.html">Tools Index</a>
        <p>This is part of the c9 Manual.
        Copyright (C) 2016
        c9 team.
        See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
        for copying conditions.</p>

    </body>
</html>
<!DOCTYPE html>
<html dir="ltr" lang="en">
    <head>
        <meta charset='utf-8'>
        <title>Network Tools</title>
    </head>
    <body>

        <a href="index.html">Tools Index</a>

        <h1>Network Tools</h1>

        <p>This document and others under tools extend
        <a href="../core/network.html">core network</a>
        witch allow to connect to the internet in the most
        common environments. Follow documents allow to configure
        tap interfaces for virtual machines, audit network,
        dns cache and encryption, etc.</p>

        <p>On core is configured a sub-domain from
        <a href="http://freedns.afraid.org">afraid.org</a>,
        <a href="https://freedns.afraid.org/dynamic/v2/">generate cron job</a>
        to update ip every 5 minutes, check
        <a href="https://freedns.afraid.org/dynamic/v2/tips/">about dynamic interface</a>. To run as system cron job add as root and remove path line from example;</p>
        <pre>
        # crontab -e
        </pre>

        <p>Example from afraid uses curl and will log output to /tmp/freedns*,
        change to /var/log/freedns</p>

        <h2 id="bridge">Bridges</h2>

        <p>For more information about bridges read
        <a href="http://ebtables.netfilter.org/br_fw_ia/br_fw_ia.html#section7">bridges with iptables</a>.
        Script <a href="conf/etc/rc.d/blan">/etc/rc.d/blan</a> creates br0 bridge interface
        with 10.0.0.1 ip. Number of tap interfaces created and attached depends on number
        of cpu cores available. Ethernet interface is added to the bridge. Edit /etc/rc.conf
        to setup interfaces at startup;</p>

        <pre>
        #
        # /etc/rc.conf: system configuration
        #

        FONT=default
        KEYMAP=dvorak
        TIMEZONE="Europe/Lisbon"
        HOSTNAME=c9
        SYSLOG=sysklogd
        SERVICES=(lo iptables wlan blan crond)

        # End of file
        </pre>

        <p>Change iptables init script
        <a href="../core/conf/rc.d/iptables">/etc/rc.d/iptables</a>
        to load new rules from
        <a href="../core/conf/iptables/br-lan.v4">/etc/iptables/br-lan.v4</a>.
        Now change <a href="../core/scripts/iptables-br.sh">iptables-br.sh</a>
        with your network configuration and run;
        </p>

        <pre>
        # bash core/scripts/iptables-br.sh
        </pre>

        <a href="index.html">Tools Index</a>
        <p>This is part of the c9 Manual.
        Copyright (C) 2016
        c9 team.
        See the file <a href="../fdl-1.3-standalone.html">Gnu Free Documentation License</a>
        for copying conditions.</p>

    </body>
</html>