WebSVN – configs – /homeserver/etc/raddb/sites-available/dhcp

# -*- text -*-
######################################################################
#
#       This is a virtual server that handles DHCP.
#
#               !!!! WARNING !!!!
#
#       This code is experimental, and SHOULD NOT be used in a
#       production system.  It is intended for validation and
#       experimentation ONLY.
#
#       In order for this to work, you will need to run configure:
#
#               $ ./configure --with-dhcp
#               $ make
#               $ vi share/dictionary
#
#       ## Un-comment the line containing $INCLUDE dictionary.dhcp
#       ## Then, save the file.
#
#               $ make install
#
#       DHCP is NOT enabled by default.
#
#       The goal of this effort is to get the code in front of
#       people who are interested in another DHCP server.
#       We NEED FEEDBACK, patches, bug reports, etc.  Especially patches!
#
#       Please contribute, or this work will be nothing more than
#       a curiosity.
#
#
#       Q: What does it do?
#       A: It allows the server to receive DHCP packets, and to
#          respond with static, pre-configured DHCP responses.
#
#       Q: Does it do static/dynamic IP assignment?
#       A: No.  Or, maybe.  Try it and see.
#
#       Q: Does it read ISC configuration or lease files?
#       A: No.  Please submit patches.
#
#       Q: Does it have DHCP feature X?
#       A: No.  Please submit patches.
#
#       Q: Does it support option 82?
#       A: Yes.
#
#       Q: Does it support other options?
#       A: Maybe.  See dictionary.dhcp.  Please submit patches.
#
#       Q: It doesn't seem to do much of anything!
#       A: Exactly.
#
#       $Id: 33da1f10a67dd38b889300bc998737a268ef0948 $
#
######################################################################

#
#  The DHCP functionality goes into a virtual server.
#
server dhcp {

#  Define a DHCP socket.
#
#  The default port below is 6700, so you don't break your network.
#  If you want it to do real DHCP, change this to 67, and good luck!
#
#  You can also bind the DHCP socket to an interface.
#  See below, and raddb/radiusd.conf for examples.
#
#  This lets you run *one* DHCP server instance and have it listen on
#  multiple interfaces, each with a separate policy.
#
#  If you have multiple interfaces, it is a good idea to bind the
#  listen section to an interface.  You will also need one listen
#  section per interface.
#
#  FreeBSD does *not* support binding sockets to interfaces.  Therefore,
#  if you have multiple interfaces, broadcasts may go out of the wrong
#  one, or even all interfaces.  The solution is to use the "setfib" command.
#  If you have a network "10.10.0/24" on LAN1, you will need to do:
#
#  Pick any IP on the 10.10.0/24 network
#       $ setfib 1 route add default 10.10.0.1
#
#  Edit /etc/rc.local, and add a line:
#       setfib 1 /path/to/radiusd
#
#  The kern must be built with the following options:
#       options    ROUTETABLES=2
#  or any value larger than 2.
#
# The other only solution is to update FreeRADIUS to use BPF sockets.
#

        #  So that we only specify these values once, and then
        #  use them in all of the listen sections.
        port = 6700
        ipaddr = 127.0.0.1
        interface = lo0

        #  When the machine is not Linux, or has only one network
        #  interface, use the following listener.  It receives
        #  broadcast *and* unicast packets.
        listen {
                type = dhcp

                ipaddr = *
                port = ${..port}
                interface = ${..interface}

                # The DHCP server defaults to allowing broadcast packets.
                # Set this to "no" only when the server receives *all* packets
                # from a relay agent.  i.e. when *no* clients are on the same
                # LAN as the DHCP server.
                #
                # It's set to "no" here for testing.
                broadcast = no
        }

        # When the machine is Linux and has multiple network interfaces, use
        # the following two listeners instead of the one above.

        #  Listen for broadcasts on a specific interface.
        listen {
                type = dhcp
                ipaddr = 255.255.255.255
                port = ${..port}
                interface = ${..interface}

                #
                #  The source IP for unicast packets is chosen from the first
                #  one of the following items which returns a valid IP
                #  address:
                #
                #       src_ipaddr
                #       ipaddr
                #       reply:DHCP-Server-IP-Address
                #       reply:DHCP-DHCP-Server-Identifier
                #
                #  For now, use the parent's "ipaddr", not the one
                #  in this listen section
                #
                src_ipaddr = ${..ipaddr}
        }

        #  Listen for unicasts on an IP, but not bound to any interface.
        #  This allows Linux systems to receive packets on interface X
        #  when the IP is associated with interface Y.
        #
        #  Then, define which interface the packets go out of, via
        #  "src_interface".  This means that the outbound packets
        #  get sent via the correct interface.
        listen {
                type = dhcp
                ipaddr = ${..ipaddr}
                port = ${..port}

                #
                #  When sending unicast responses, this interface is
                #  used as the source interface.  If unset, the value
                #  is taken from the "interface" field in this
                #  section.
                #
                #  This interface is also used when adding ARP entries.
                #  FreeRADIUS doesn't open "raw" network sockets to send
                #  unicast DHCP responses on the local network.  Instead,
                #  it updates the ARP table for this interface with the
                #  MAX and IP of the DHCP client.  The server can then
                #  send a normal UDP unicast socket.
                #
                #  NOTE: The server MUST be running as "root" in order
                #  to update the ARP table.  Or, it must have the
                #  apropriate capabilities added to it after it starts up.
                #
                src_interface = ${..interface}
        }

#  Packets received on the socket will be processed through one
#  of the following sections, named after the DHCP packet type.
#  See dictionary.dhcp for the packet types.
dhcp DHCP-Discover {
        update reply {
               DHCP-Message-Type = DHCP-Offer
        }

        #  The contents here are invented.  Change them!
        update reply {
                DHCP-Domain-Name-Server = 127.0.0.1
                DHCP-Domain-Name-Server = 127.0.0.2
                DHCP-Subnet-Mask = 255.255.255.0
                DHCP-Router-Address = 192.168.1.1
                DHCP-IP-Address-Lease-Time = 86400
                DHCP-DHCP-Server-Identifier = 192.168.1.1
        }

        #  Do a simple mapping of MAC to assigned IP.
        #
        #  See below for the definition of the "mac2ip"
        #  module.
        #
        #mac2ip

        #  If the MAC wasn't found in that list, do something else.
        #  You could call a Perl, Python, or Java script here.

        #if (notfound) {
        # ...
        #}

        #  Or, allocate IPs from the DHCP pool in SQL.
#       dhcp_sqlippool

        ok
}

dhcp DHCP-Request {
        update reply {
               DHCP-Message-Type = DHCP-Ack
        }

        #  The contents here are invented.  Change them!
        update reply {
                DHCP-Domain-Name-Server = 127.0.0.1
                DHCP-Domain-Name-Server = 127.0.0.2
                DHCP-Subnet-Mask = 255.255.255.0
                DHCP-Router-Address = 192.168.1.1
                DHCP-IP-Address-Lease-Time = 86400
                DHCP-DHCP-Server-Identifier = 192.168.1.1
        }

        #  Do a simple mapping of MAC to assigned IP.
        #
        #  See below for the definition of the "mac2ip"
        #  module.
        #
        #mac2ip

        #  If the MAC wasn't found in that list, do something else.
        #  You could call a Perl, Python, or Java script here.

        #if (notfound) {
        # ...
        #}

        #  Or, allocate IPs from the DHCP pool in SQL.
#       dhcp_sqlippool

        ok
}

#  If there's no named section for the packet type, then the packet
#  is processed through this section.
dhcp {
        # send a DHCP NAK.
        reject
}


}

######################################################################
#
#  This next section is a sample configuration for the "passwd"
#  module, that reads flat-text files.  It should go into
#  radiusd.conf, in the "modules" section.
#
#  The file is in the format <mac>,<ip>
#
#       00:01:02:03:04:05,192.168.1.100
#       01:01:02:03:04:05,192.168.1.101
#       02:01:02:03:04:05,192.168.1.102
#
#  This lets you perform simple static IP assignment.
#
######################################################################

#passwd mac2ip {
#       filename = ${confdir}/mac2ip
#       format = "*DHCP-Client-Hardware-Address:=DHCP-Your-IP-Address"
#       delimiter = ","
#}
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