toto69@toto69-ubuntu:~$ nslookup www.perdu.com
;; connection timed out; no servers could be reached
[code]toto69@toto69-ubuntu:~$ cat /etc/resolv.conf
Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
DO NOT EDIT THIS FILE BY HAND – YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search monreseau[/code]
[code]toto@serveur-debian:/etc/dhcp$ cat dhcpd.conf
ddns-update-style none;
option definitions common to all supported networks…
option domain-name “monreseau”;
option domain-name-servers 81.253.149.9, 80.10.246.1;
default-lease-time 600;
max-lease-time 7200;
If this DHCP server is the official DHCP server for the local
network, the authoritative directive should be uncommented.
authoritative;
Use this to send dhcp log messages to a different log file (you also
have to hack syslog.conf to complete the redirection).
log-facility local7;
No service will be given on this subnet, but declaring it helps the
DHCP server to understand the network topology.
#subnet 10.152.187.0 netmask 255.255.255.0 {
#}
This is a very basic subnet declaration.
#subnet 10.254.239.0 netmask 255.255.255.224 {
range 10.254.239.10 10.254.239.20;
#}
This declaration allows BOOTP clients to get dynamic addresses,
which we don’t really recommend.
#subnet 10.254.239.32 netmask 255.255.255.224 {
range dynamic-bootp 10.254.239.40 10.254.239.60;
option broadcast-address 10.254.239.31;
#}
A slightly different configuration for an internal subnet.
subnet 172.16.10.0 netmask 255.255.255.240 {
range 172.16.10.2 172.16.10.14;
option domain-name-servers 172.16.10.1;
option domain-name “monreseau”;
option routers 172.16.10.1;
option broadcast-address 172.16.10.15;
default-lease-time 600;
max-lease-time 7200;
}
Hosts which require special configuration options can be listed in
host statements. If no address is specified, the address will be
allocated dynamically (if possible), but the host-specific information
will still come from the host declaration.
#host passacaglia {
hardware ethernet 0:0:c0:5d:bd:95;
filename “vmunix.passacaglia”;
#}
Fixed IP addresses can also be specified for hosts. These addresses
should not also be listed as being available for dynamic assignment.
Hosts for which fixed IP addresses have been specified can boot using
BOOTP or DHCP. Hosts for which no fixed address is specified can only
be booted with DHCP, unless there is an address range on the subnet
to which a BOOTP client is connected which has the dynamic-bootp flag
set.
#host fantasia {
hardware ethernet 08:00:07:26:c0:a5;
#}
You can declare a class of clients and then do address allocation
based on that. The example below shows a case where all clients
in a certain class get addresses on the 10.17.224/24 subnet, and all
other clients get addresses on the 10.0.29/24 subnet.
#class “foo” {
match if substring (option vendor-class-identifier, 0, 4) = “SUNW”;
#}
#shared-network 224-29 {
subnet 10.17.224.0 netmask 255.255.255.0 {
}
subnet 10.0.29.0 netmask 255.255.255.0 {
}
pool {
allow members of “foo”;
range 10.17.224.10 10.17.224.250;
}
pool {
deny members of “foo”;
range 10.0.29.10 10.0.29.230;
}
#}
[/code]
Tant qu’on y est !
[code]toto@serveur-debian:/etc/default$ cat isc-dhcp-server
Defaults for isc-dhcp-server initscript
sourced by /etc/init.d/isc-dhcp-server
installed at /etc/default/isc-dhcp-server by the maintainer scripts
This is a POSIX shell fragment
Path to dhcpd’s config file (default: /etc/dhcp/dhcpd.conf).
#DHCPD_CONF=/etc/dhcp/dhcpd.conf
Path to dhcpd’s PID file (default: /var/run/dhcpd.pid).
#DHCPD_PID=/var/run/dhcpd.pid
Additional options to start dhcpd with.
Don’t use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead
#OPTIONS=""
On what interfaces should the DHCP server (dhcpd) serve DHCP requests?
Separate multiple interfaces with spaces, e.g. “eth0 eth1”.
INTERFACES=“br0”
[/code]
