Re: Still have problem with DNS forwarding
From: Cris Hanna \(SBS-MVP\) (crisnospamhanna_at_mindspring.com)
Date: 04/26/04
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Date: Sun, 25 Apr 2004 20:06:32 -0500
Well...lets step back
Why is the linux box still up and on the network??
SBS should "optimally" have two nics
1 for internal LAN connections, running to a switch/hub and all workstations
connect to the hub as well
1 for external/internet connection, to either a router, cablemodem, DSL
modem, or other device and it is the only thing connected to that device
These two nics should be on different IP subnets The IP address of the
internal nic should be the DNS address for the LAN
When you run the CEICW you would specify the IP addresses of your ISPs DNS
servers.
Who set this linux server up and why??
-- Cris Hanna (SBS-MVP) ------------------------------------------------------------ Please DO NOT respond directly to me but rather in the newsgroup so that everyone can benefit <anonymous@discussions.microsoft.com> wrote in message news:3a6a01c429ce$05765760$a101280a@phx.gbl... >I don't know, not being over familiar with linux > (Microsoft born and bred!). How would i find out? > > I certainly do not reference the linux server in anyway > on the sbs, and it still has problems when it comes to > dns. How could the linux server do this? The only thing > that i could think of is that it in some way has promoted > itself to be the authoritive dns server on the lan. It > was running the dns in the old set-up, the install of the > sbs was a fresh one (Not upgrade). > > The other thing i thought of was that when i installed > the sbs on the server, it had two nic's installed. Is > there anyway that it could be trying to use the disabled > nic for dns in preference to the enabled nic? > > Regards > > Darren Woodman >>-----Original Message----- >>Sorry I haven't jumped into this before and you started > a new thread so I >>don't know the history >> >>Is there a nic running from your SBS box to your Linux > box and then your >>linux box to the internet...in otherwords is the linux > box acting as some >>sort of proxy server?? >> >>-- >>Cris Hanna (SBS-MVP) >>--------------------------------------------------------- > --- >>Please DO NOT respond directly to me but rather in the > newsgroup so that >>everyone can benefit >>"Darren Woodman" <anonymous@discussions.microsoft.com> > wrote in message >>news:2f7f01c428c9$7be5ece0$a601280a@phx.gbl... >>> Subject: Re: DNS >>> From: "anonymous@discussions.microsoft.com" >>> <anonymous@discussions.microsoft.com> Sent: 4/22/2004 >>> 1:26:55 PM >>> >>> >>> >>> >>> Well spotted, this was the result of my work LATE last >>> night. I have ammended this (Although it was OK before > i >>> changed it for some other clients network address by >>> mistake), and i have run the CEICW. >>> >>> I still have the same problem, if i make anything other >>> than the linux server (192.168.254.15) the first > forward >>> resolution path, anything relying on name resolution >>> fails, email, internet access, etc, etc.... >>> >>> Regards >>> >>> Darren >>>>-----Original Message----- >>>>If your server has IP 192.168.254.1 than DNS should be >>> the same. >>>> >>>>-- >>>>Regards, >>>> >>>>Marina >>>>Microsoft SBS-MVP >>>> >>>><anonymous@discussions.microsoft.com> schreef in > bericht >>>>news:29e401c4283a$81b20bc0$a301280a@phx.gbl... >>>>> Hi >>>>> >>>>> Below is the output of the ipconfig /all >>>>> >>>>> C:\Documents and Settings\Administrator>ipconfig /all >>>>> >>>>> Windows IP Configuration >>>>> >>>>> Host Name . . . . . . . . . . . . : epd1 >>>>> Primary Dns Suffix . . . . . . . : EPD.co.uk >>>>> Node Type . . . . . . . . . . . . : Hybrid >>>>> IP Routing Enabled. . . . . . . . : No >>>>> WINS Proxy Enabled. . . . . . . . : No >>>>> DNS Suffix Search List. . . . . . : EPD.co.uk >>>>> co.uk >>>>> >>>>> Ethernet adapter Server Local Area Connection: >>>>> >>>>> Connection-specific DNS Suffix . : >>>>> Description . . . . . . . . . . . : Intel(R) >>> PRO/1000 >>>>> MT Network Connection >>>>> Physical Address. . . . . . . . . : 00-07-E9-4D- > F3- >>> 01 >>>>> DHCP Enabled. . . . . . . . . . . : No >>>>> IP Address. . . . . . . . . . . . : 192.168.254.1 >>>>> Subnet Mask . . . . . . . . . . . : 255.255.255.0 >>>>> Default Gateway . . . . . . . . . : > 192.168.254.254 >>>>> DNS Servers . . . . . . . . . . . : 192.168.16.1 >>>>> Primary WINS Server . . . . . . . : 192.168.254.1 >>>>> >>>>> C:\Documents and Settings\Administrator> >>>>> >>>>> >>>>> This is the output of nslookup when trying to resolve >>>>> name with the ISP forwarders active >>>>> >>>>> Default Server: epd1.epd.co.uk >>>>> Address: 192.168.254.1 >>>>> >>>>> > bbc.co.uk >>>>> Server: epd1.epd.co.uk >>>>> Address: 192.168.254.1 >>>>> >>>>> DNS request timed out. >>>>> timeout was 2 seconds. >>>>> DNS request timed out. >>>>> timeout was 2 seconds. >>>>> *** Request to epd1.epd.co.uk timed-out >>>>> > google.co.uk >>>>> Server: epd1.epd.co.uk >>>>> Address: 192.168.254.1 >>>>> >>>>> DNS request timed out. >>>>> timeout was 2 seconds. >>>>> DNS request timed out. >>>>> timeout was 2 seconds. >>>>> *** Request to epd1.epd.co.uk timed-out >>>>> >>>>> Thanks >>>>> >>>>> Darren Woodman >>>>> >-----Original Message----- >>>>> >Connect Email and Internet Connection Wizard. This >>> will >>>>> set everything up >>>>> >for you. >>>>> >Can you post the ipconfig/all from the server > please? >>>>> > >>>>> >-- >>>>> >Regards, >>>>> > >>>>> >Marina >>>>> >Microsoft SBS-MVP >>>>> > >>>>> ><anonymous@discussions.microsoft.com> schreef in >>> bericht >>>>> >news:273a01c427f5$8b3d7cf0$a501280a@phx.gbl... >>>>> >> DNS Resolution only works when forwarded to the >>> Linux >>>>> >> server, and yes it is still on the network. There >>> are 2 >>>>> >> nic in the server, one disabled. What's CEICW? >>>>> >> >>>>> >> Ragards >>>>> >> >>>>> >> Darren Woodman >>>>> >> >-----Original Message----- >>>>> >> >Is that Linuxbox still in the network? 2 nics in >>> the >>>>> >> server? Run the >>>>> >> >CEICW-wizard? >>>>> >> > >>>>> >> >-- >>>>> >> >Regards, >>>>> >> > >>>>> >> >Marina >>>>> >> >Microsoft SBS-MVP >>>>> >> > >>>>> >> >"Darren Woodman" <drw@ecommdigital.co.uk> schreef >>> in >>>>> >> bericht >>>>> >> >news:25b001c427ec$24e02150$a601280a@phx.gbl... >>>>> >> >> I have installed a SBS 2003 Server on my > customer >>>>> site. >>>>> >> >> The installation went well, with no errors. I >>>>> configure >>>>> >> >> the internal dns to use the external dns > servers >>>>> >> >> recommended by the customer ISP (Forwarders). > The >>>>> >> >> original system before this was running IMAP > mail >>>>> on a >>>>> >> >> linux box, and DNS was configured on this >>> (external >>>>> >> >> resolution via dynamicdns). I cannot get the > SBS >>>>> 2003 >>>>> >> to >>>>> >> >> forward dns requests for external resolution, >>> unless >>>>> >> the >>>>> >> >> sbs 2003 dns forwards to the old linux box >>> first. I >>>>> can >>>>> >> >> ping the ISP and other dns servers, so the >>> routing >>>>> side >>>>> >> >> of it is working. There is a Cisco PIX firewall >>> on >>>>> the >>>>> >> >> gateway, but this is configured correctly. >>>>> >> >> >>>>> >> >> Any idea's? >>>>> >> > >>>>> >> > >>>>> >> >. >>>>> >> > >>>>> > >>>>> > >>>>> >. >>>>> > >>>> >>>> >>>>. >>> >>> >> >> >>. >>
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