DHCP and Win7
Héctor Herrera
hherreraa at gmail.com
Tue Feb 26 18:34:06 UTC 2013
@Grace, I've tried that. And now I'm monitoring the ethernet interface on
the Win7 side. I'm watching announces to the network by the side of Win7
machine, a few DHCP discover, a lot of MS-SEARCH * HTTP/1.1 and even more
of NOTIFY * HTTP/1.1 packets. I'm not really sure about those info, but
when I apply decodifications to ICMP or IGRP, I see a lot of "Unknown ICMP
(obsolete or malformed)" packets. Should I think the WIn7 client isn't
working properly?
And BTW, thanks all of you for your help!
2013/2/26 Grace He <ghe at ryerson.ca>
> Hector: try the following:
> 1. disable both wired and wireless on your PC
> 2. enable only wired connection on your PC
> 3. make sure the dhcp server and PC are on the same network
> 4. on PC: run "ipconfig" to ensure it has wired connection
> 5. on PC: run "ipconfig /release", then "ipconfig /renew"
> 6. on dhcp server: look into log to see if any dhcp request coming
> from PC's MAC address
>
> I don't believe the problem is with your dhcp server.
>
> Cheers,
> Grace
>
> On Tue, Feb 26, 2013 at 12:07 PM, Héctor Herrera <hherreraa at gmail.com>
> wrote:
> > @Grace: The wired network it works. It has the IP 169.254.150.144. And
> I'm
> > sure the cable works properly, when I tried static IP configuration on
> my PC
> > and on the server, I can connect the server by SSH.
> >
> > @Sten: What do you mean by 'Rogue server'?
> > About the logs, I have only information about listening in eth0. Here's
> the
> > log of /var/log/messages:
> >
> > Feb 26 11:46:42 communication-server kernel: [ 5842.440825] eth0: link
> down
> > Feb 26 11:46:54 communication-server kernel: [ 5853.997185] eth0: link
> up,
> > 100Mbps, full-duplex, lpa 0xCDE1
> > Feb 26 11:47:47 communication-server kernel: [ 5907.387040] ip_tables:
> (C)
> > 2000-2006 Netfilter Core Team
> > Feb 26 11:48:04 communication-server kernel: [ 5923.659054] nf_conntrack
> > version 0.5.0 (16139 buckets, 64556 max)
> > Feb 26 11:48:04 communication-server kernel: [ 5923.659917]
> > CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
> > Feb 26 11:48:04 communication-server kernel: [ 5923.659922]
> > nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option
> or
> > Feb 26 11:48:04 communication-server kernel: [ 5923.659925] sysctl
> > net.netfilter.nf_conntrack_acct=1 to enable it.
> > Feb 26 12:23:26 communication-server kernel: [ 8045.972235] device eth0
> > entered promiscuous mode
> > Feb 26 12:23:36 communication-server kernel: [ 8055.894186] eth0: link
> down
> > Feb 26 12:23:41 communication-server kernel: [ 8060.958909] eth0: link
> up,
> > 100Mbps, full-duplex, lpa 0xCDE1
> > Feb 26 12:58:15 communication-server kernel: [10134.684416] device eth0
> left
> > promiscuous mode
> >
> >
> > Should I use eth0 on promiscuous mode? I've tried that, but isn't
> working...
> > And about the sniffing, my server listens for any DHCP query on eth0, so
> I
> > used ngrep -d eth0 (listen all the traffic on eth0), and nothing...
> >
> >
> > 2013/2/26 Sten Carlsen <stenc at s-carlsen.dk>
> >>
> >> Just a thought: Rogue DHCP server?
> >>
> >> Server logs, will contain info if discover is received.
> >>
> >> sniffing at the server to see if any discover packets arrive.
> >>
> >>
> >> On 26/02/13 16:57, Héctor Herrera wrote:
> >>
> >> I had tested with static. It works. Both cards (in the DHCP server) are
> >> working fine. And also I tried to catch with a sniffer in the network
> >> between Win7 and my DHCP server, and I got nothing :(
> >>
> >>
> >> 2013/2/26 Łukasz Siemiradzki <lukasz.siemiradzki at gmail.com>
> >>>
> >>> Hello!
> >>> Are you sure that your problem lies on DHCP level? Have you tested the
> >>> connectivity between windows 7 client and the dhcp server using static
> >>> addresses?
> >>> If so and there is connectivity - can you start sniffer (i.e.
> wireshark)
> >>> on Win7, configure it to listen on an active interface and gather data?
> >>> BR
> >>> ŁS
> >>>
> >>>
> >>> 2013/2/26 Héctor Herrera <hherreraa at gmail.com>
> >>>>
> >>>> Well, I assume the trouble here is Win7. But, why? That's my
> question. I
> >>>> don't understand why Win7 isn't asking the DHCP server for an IP
> address.
> >>>> (Or maybe is the DHCP server the trouble? I don't really understand
> it,
> >>>> that's why isn't so clear my question)
> >>>>
> >>>> I'm trying to collect information in the network between my Win7 test
> >>>> machine and the server. The network is dead, I haven't received any
> >>>> information. And I'm renewing all the connections in Win7 (ipconfig
> /renew).
> >>>>
> >>>> BTW, I tried with both ethernet interfaces for the IP information (I
> >>>> configured the server on eth0 and eth1), without good results. I
> dunno what
> >>>> else can I do. Do you have any ideas?
> >>>>
> >>>>
> >>>> 2013/2/26 Oskar Berggren <oskar.berggren at gmail.com>
> >>>>>
> >>>>> 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
> >>>>> >> _______________________________________________
> >>>>> >> dhcp-users mailing list
> >>>>> >> dhcp-users at lists.isc.org
> >>>>> >> https://lists.isc.org/mailman/listinfo/dhcp-users
> >>>>> >
> >>>>> >
> >>>>> >
> >>>>> >
> >>>>> > --
> >>>>> > 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
> >>>>> _______________________________________________
> >>>>> dhcp-users mailing list
> >>>>> dhcp-users at lists.isc.org
> >>>>> https://lists.isc.org/mailman/listinfo/dhcp-users
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> 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
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>>
> >>> "Omnes homines natura scire desiderant"
> >>> Aristotelis
> >>>
> >>> _______________________________________________
> >>> dhcp-users mailing list
> >>> dhcp-users at lists.isc.org
> >>> https://lists.isc.org/mailman/listinfo/dhcp-users
> >>
> >>
> >>
> >>
> >> --
> >> 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
> >>
> >>
> >> --
> >> Best regards
> >>
> >> Sten Carlsen
> >>
> >> No improvements come from shouting:
> >>
> >> "MALE BOVINE MANURE!!!"
> >>
> >>
> >> _______________________________________________
> >> dhcp-users mailing list
> >> dhcp-users at lists.isc.org
> >> https://lists.isc.org/mailman/listinfo/dhcp-users
> >
> >
> >
> >
> > --
> > 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
>
>
>
> --
> Grace He, P. Eng.
> Technical Officer (IT Support)
>
> Ryerson University
> Dept. of Mechanical and Industrial Engineering
> Faculty of Engineering, Architecture and Science
> 350 Victoria St., Toronto, ON, Canada
> M5B 2K3
>
> Office Location: Kerr Hall East - KHE137B
> VOICE: (416) 979-5000, Ext 7756
> FAX: (416)-979-5265
> E-mail: ghe at ryerson.ca
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>
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> http://labs.mie.ryerson.ca/
> _______________________________________________
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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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