Isc-dhcpd server

isc-dhcpd

Tarkvara arendatav ISC (Internet System Consortsium) poolt.

DHCP (Dynamic Host Configuration Protocol) teenust kasutavad arvutid oma võrguparameetrite automaatseks seadistamiseks.

Kokku kujutab see endast kolme tarkvara

   * A DHCP server
   * A DHCP client
   * A DHCP relay agent

Kõige levinuim dhcp.conf

ddns-update-style none;

subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.50 192.168.0.100;
default-lease-time 144000;
max-lease-time 192000;
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.0.255;
option routers 192.168.0.1;
option domain-name-servers 194.126.97.30;
}

võrguks on 192.168.0.0 netmaskiga 255.255.255.0 ip'de vahemil milles jagatakse aadresse 192.168.0.50 kuni 100 dhcp paketi eluiga subnet mask mis jagatakse kliendile boardcast aadress mille saab klient routeri aadress kliendile nimeserver, nimeserverid võib kirjutada mitu ja eraldada komaga

teadus

1. Süsteem saadab välja DHCP Päringu kohalikku võrku. Päring sisaldab MAC aadressi mis on võrgukaardil.

2. DHCPD program serveris võtab vastu päringu. Kontrollib konfiguratsioonifaili

3. DHCPD program koostab vastuspaketi mis koosneb hulgast infost.

mac järgi dhcp jagamine

ddns-update-style interim;
ignore client-updates;

subnet 192.168.3.0 netmask 255.255.255.0 { 
       option routers                  192.168.3.3;
       option subnet-mask              255.255.255.0;
       option domain-name-servers      195.250.187.46, 194.126.97.30;
       option ntp-servers              192.168.3.3;
       deny unknown-clients;
       default-lease-time 21600;
       max-lease-time 43200;

#Joel Jans
host JJ { hardware ethernet 00:C0:26:7F:B0:1C; fixed-address 192.168.3.10; }
}

ddns-update-style none;

default-lease-time 86400;               # 1 Day
max-lease-time 172800;                  # 2 Days

option ntp-servers timehost.ut.ee;
#option netbios-name-servers 193.40.5.125;
option netbios-node-type 8;
authoritative;


shared-network net {

        subnet 192.168.0.0 netmask 255.255.255.0 {
               option subnet-mask 255.255.255.0;
               option routers 192.168.0.1;
               option domain-name-servers 194.126.115.18, 194.126.101.34;
               pool {
                       range 192.168.0.100 192.168.0.254;
               }
       }

       subnet 192.168.1.0 netmask 255.255.255.0 {
               option subnet-mask 255.255.255.0;
               option routers 192.168.1.1;
               option domain-name-servers 193.40.5.39, 193.40.5.76;
               include "/usr/local/etc/isc-dhcp_192.168.1";
       }
}

ja isc-dhcp_192.168.1

host tundmatu1 {hardware ethernet 00:30:1b:34:9f:52; fixed-address  192.168.1.23;}
host tundmatu2 {hardware ethernet 00:02:3f:b7:b5:b1; fixed-address  192.168.1.24;}
host tundmatu3 {hardware ethernet 00:04:61:4e:25:36; fixed-address  192.168.1.25;}
host tundmatu4 {hardware ethernet 00:50:8d:51:fc:31; fixed-address  192.168.1.26;}