DHCP and Win7

Oskar Berggren oskar.berggren at gmail.com
Tue Feb 26 15:16:39 UTC 2013


You started with "unable to send IP addresses to Win7" but with your
latest info it seems like the proper question is the reverse: "why
can't win7 send DHCP requests to my DHCP server?".

Is Win7 configured to use DHCP?
If you use wireshark or tcpdump on Win7 and on the DHCP server, do you
see any DHCPDISCOVER from the Win7 machine?

/Oskar


2013/2/26 Héctor Herrera <hherreraa at gmail.com>:
> That´s the trouble, I haven't any information about Windows 7 asking for an
> IP to my server.
>
> This is my dhcpd.conf. It's really basic because I want, first of all, the
> service working:
>
> option domain-name "galatea.cl";
> option domain-name-servers 8.8.8.8, 200.62.222.222;
> option routers 192.168.1.1;
> default-lease-time 600;
> max-lease-time 7200;
> server-identifier 192.168.1.1;
> #ddns-update-style none;
> authoritative;
> log-facility local7;
>
> subnet 192.168.1.0 netmask 255.255.255.0 {
>         range 192.168.1.15 192.168.1.100;
> }
>
> I have some rules on iptables too:
>
> Generated by iptables-save v1.4.8 on Tue Feb 26 11:48:15 2013
> *nat
> :PREROUTING ACCEPT [4:312]
> :POSTROUTING ACCEPT [0:0]
> :OUTPUT ACCEPT [0:0]
> -A PREROUTING -s 192.168.0.0/24 -p tcp -m tcp --dport 80 -j REDIRECT
> --to-ports 3128
> -A PREROUTING -s 192.168.1.0/24 -p tcp -m tcp --dport 80 -j REDIRECT
> --to-ports 3128
> COMMIT
> # Completed on Tue Feb 26 11:48:15 2013
> # Generated by iptables-save v1.4.8 on Tue Feb 26 11:48:15 2013
> *filter
> :INPUT ACCEPT [27:2066]
> :FORWARD ACCEPT [0:0]
> :OUTPUT ACCEPT [13:1324]
> -A INPUT -i eth1 -p tcp -m state --state NEW -m tcp --dport 3128 -j ACCEPT
> COMMIT
> # Completed on Tue Feb 26 11:48:15 2013
>
> I don't have any other information. As I said, the logs doesn't show me
> information about Win7. Oh, and Win7 hasn't active the Firewall Service.
>
>
> 2013/2/26 Steven Carr <sjcarr at gmail.com>
>>
>> Can you see the requests coming in to the DHCP server from the Windows
>> 7 client? and can you also perform a packet capture on the Windows 7
>> machine to see if it is receiving the responses from the DHCP server.
>> If you can upload the logs (sanitised) and the packet capture then I
>> can have a look.
>>
>> Steve
>>
>>
>> On 26 February 2013 13:10, Héctor Herrera <hherreraa at gmail.com> wrote:
>> > Greetings to all!
>> >
>> > I have an issue with DHCP and Win7. I'm working with Debian 6.0.6, and
>> > I''m
>> > trying to mount a DHCP server on it (DHCP ver. 4.1.1). But I'm unable to
>> > send IP addresses to Win7 machines. I tried with other OS (specifically
>> > Arch
>> > Linux and WinXP), and the server sends IP addresses to them, but with
>> > Win7... I cannot
>> >
>> > May someone knows how to handle it? And if it so, can someone send some
>> > information?
>> >
>> > Thanks to all!
>> >
>> > P.D: Sorry about the English, it isn't my first language :P
>> >
>> > --
>> > Saludos
>> >
>> > Héctor Herrera Anabalón
>> > Egresado ICCI UNAP
>> > Servicio Arquitectura Galatea - Oficina Técnica http://www.galatea.cl
>> > Miembro USoLIX Victoria
>> > Registered User #548600 (LinuxCounter.net)
>> >
>> > _______________________________________________
>> > dhcp-users mailing list
>> > dhcp-users at lists.isc.org
>> > https://lists.isc.org/mailman/listinfo/dhcp-users
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>> dhcp-users at lists.isc.org
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>
>
>
>
> --
> Saludos
>
> Héctor Herrera Anabalón
> Egresado ICCI UNAP
> Servicio Arquitectura Galatea - Oficina Técnica http://www.galatea.cl
> Miembro USoLIX Victoria
> Registered User #548600 (LinuxCounter.net)
>
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> dhcp-users mailing list
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