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Re: Make a DHCP server using Fedora - Help



Antonio Olivares wrote:

BTW,

I am getting DHCP requests from other machines in the school network :(
I only want the network for my own machines in the classroom not the others. Here's what I am getting Nov 19 07:14:27 localhost dhcpd: DHCPDISCOVER from 00:50:2c:a2:23:28 via eth0: network 10.154.19.0/24: no free leases Nov 19 07:14:27 localhost dhcpd: DHCPREQUEST for 10.154.19.248 (10.154.16.130) from 00:50:2c:a2:23:28 via eth0: unknown lease 10.154.19.248. Nov 19 07:18:50 localhost ntpd[2082]: synchronized to 72.249.76.84, stratum 2 Nov 19 07:24:25 localhost dhcpd: DHCPREQUEST for 10.154.19.94 from 00:40:f4:ea:ee:d3 via eth0: unknown lease 10.154.19.94. Nov 19 07:25:34 localhost dhcpd: DHCPINFORM from 10.154.19.94 via eth0 Nov 19 07:25:34 localhost dhcpd: DHCPACK to 10.154.19.94 (00:40:f4:ea:ee:d3) via eth0 Nov 19 07:25:37 localhost dhcpd: DHCPINFORM from 10.154.19.94 via eth0 Nov 19 07:25:37 localhost dhcpd: DHCPACK to 10.154.19.94 (00:40:f4:ea:ee:d3) via eth0 Nov 19 07:26:51 localhost dhcpd: DHCPREQUEST for 10.154.19.133 from 00:0c:f1:76:fc:68 via eth0: unknown lease 10.154.19.133. Nov 19 07:27:25 localhost dhcpd: DHCPINFORM from 10.154.19.165 via eth0 Nov 19 07:27:25 localhost dhcpd: DHCPACK to 10.154.19.165 (00:08:74:2e:70:e7) via eth0 Nov 19 07:27:28 localhost dhcpd: DHCPINFORM from 10.154.19.165 via eth0 Nov 19 07:27:28 localhost dhcpd: DHCPACK to 10.154.19.165 (00:08:74:2e:70:e7) via eth0 Nov 19 07:30:08 localhost dhcpd: DHCPINFORM from 10.154.19.63 via eth0
Nov 19 07:30:08 localhost dhcpd: DHCPACK to 10.154.19.63 (00:12:3f:31:8d:b4) via eth0
Nov 19 07:30:11 localhost dhcpd: DHCPINFORM from 10.154.19.63 via eth0
Nov 19 07:30:11 localhost dhcpd: DHCPACK to 10.154.19.63 (00:12:3f:31:8d:b4) via eth0
Nov 19 07:32:38 localhost dhcpd: DHCPINFORM from 10.154.19.133 via eth0
Nov 19 07:32:38 localhost dhcpd: DHCPACK to 10.154.19.133 (00:0c:f1:76:fc:68) via eth0
Nov 19 07:33:57 localhost dhcpd: DHCPDISCOVER from 00:08:a1:0f:53:35 via eth0: network 10.154.19.0/24: no free leases
Nov 19 07:33:57 localhost dhcpd: DHCPREQUEST for 10.154.19.91 (10.154.16.130) from 00:08:a1:0f:53:35 via eth0: unknown lease 10.154.19.91.
Nov 19 07:34:13 localhost dhcpd: DHCPINFORM from 10.154.19.91 via eth0
Nov 19 07:34:13 localhost dhcpd: DHCPACK to 10.154.19.91 (00:08:a1:0f:53:35) via eth0
Nov 19 07:34:16 localhost dhcpd: DHCPINFORM from 10.154.19.91 via eth0
Nov 19 07:34:16 localhost dhcpd: DHCPACK to 10.154.19.91 (00:08:a1:0f:53:35) via eth0

Thank you very much again for helping out.

Your client subnet should be physically isolated from rest of the building's network. That is, the host should have one interface on the main net and another connected to a separate switch where your dhcp clients connect. You will break the rest of the main network if you connect your dhcp-serving interface there.

--
  Les Mikesell
   lesmikesell gmail com


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