Hi there --
I have completed downloading the BIND software onto the system in question, and I am now ready to configure the DNS server. The type of server I want to create is a caching server. The reason for this is I want the system to resolve hostnames exclusively within a private network, 192.168.0.x, and the server will NOT have access to the Internet. I know I will need to modify the /etc/named.conf and other files but I am not familiar with what settings are needed. What tools and/or entries can I use to complete the configuration of the server? Thanks.
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org]On Behalf Of William L. Maltby Sent: Monday, April 24, 2006 2:57 PM To: CentOS General List Subject: Re: [CentOS] Installing DNS
On Mon, 2006-04-24 at 14:34 -0400, Kaplan, Andrew H. wrote:
Hi there –
I need to install a DNS server on one of our systems running version 4.1. The server itself does not have a CD-ROM drive, so I am going to mount the media on a remote system and
extract the files that I need from that location. My question is, what packages do I need to install to properly set up the DNS server? Thanks.
I'm new at this, so I hope I'm telling your right...
First I did a 'man rpm' Then I searched within man for "requires" There were a couple and so I read the one pertaining to "query" Then I did "rpm -q --requires bind"
It gave me a list of needed items.
I hope this is correct and works for you too.
<snip sig stuff>
sender: "Kaplan, Andrew H." date: "Tue, Apr 25, 2006 at 09:44:25AM -0400" <<<EOQ
Hi there --
Hi,
I have completed downloading the BIND software onto the system in question, and I am now ready to configure the DNS server. The type of server I want to create is a caching server. The reason for this is I want the system to resolve hostnames exclusively within a private network, 192.168.0.x, and the server will NOT have access to the Internet. I know I will need to modify the /etc/named.conf and other files but I am not familiar with what settings are needed. What tools and/or entries can I use to complete the configuration of the server? Thanks.
Are you really sure you need a caching nameserver... ?
The cache, needs well... something to cache... Usually that something is 'the Internet' ;) however in your case, it will be the authoritive server for your intranet (you do have one, right. or not... ?).
Now, if my guess is right, you actually want to setup a DNS server that is authoritive for your local domains (and not a caching server). Make sure you choose your internal domainnames wisely, it is advisable to avoid creating internal TLDs that are used publicly (that is instead of naming your internal domains: accounting.com management.com and so on, name your local domains using a TLD like .i or .0 whatever that are safe to use).
Good luck, and good reading: http://www.tldp.org/HOWTO/DNS-HOWTO.html
Alex
On Tue, 2006-04-25 at 17:06 +0300, Alexandru E. Ungur wrote:
sender: "Kaplan, Andrew H." date: "Tue, Apr 25, 2006 at 09:44:25AM -0400" <<<EOQ
Hi there --
Hi,
I have completed downloading the BIND software onto the system in question, and I am now ready to configure the DNS server. The type of server I want to create is a caching server. The reason for this is I want the system to resolve hostnames exclusively within a private network, 192.168.0.x, and the server will NOT have access to the Internet. I know I will need to modify the /etc/named.conf and other files but I am not familiar with what settings are needed. What tools and/or entries can I use to complete the configuration of the server? Thanks.
Are you really sure you need a caching nameserver... ?
The cache, needs well... something to cache... Usually that something is 'the Internet' ;) however in your case, it will be the authoritive server for your intranet (you do have one, right. or not... ?).
I'm ignorant about all this, so "eyes wide open" here.
He did not say if other nodes accessed the net... I assume so using the same logic you follow, but adding together his "not have access" phrase and his thought that he needs a caching server. However, that should mean that his server needs access to the 'net to gather the information.
But, IIUC, a local authoritative or caching server is not needed just to have the local network resolve local names.
Now, if my guess is right, you actually want to setup a DNS server that is authoritive for your local domains (and not a caching server).
If his local net is large or complex, I think so too. Small net (low maintenance effort) has options?
I believe that proper configuration of /etc/resolv.conf and /etc/hosts (or some other software?) will suffice for *small* networks local name resolution. I don't believe a caching server provides any benefit just for that, but it would if the network does have nodes that access the 'net. These accesses are likely to require recursive processes and a caching server could provide some benefit, dependent on volume.
Make sure you choose your internal domainnames wisely, it is advisable to avoid creating internal TLDs that are used publicly (that is instead of naming your internal domains: accounting.com management.com and so on, name your local domains using a TLD like .i or .0 whatever that are safe to use).
<snip sig stuff and url>
If a caching server is needed, which I suspect, and if an authoritative server is desirable (large local net causes maintenance issues?) then I think he needs server that is authoritative (eliminates maint. of /etc/hosts, etc.), recursive (provides the complete resolution regardless of inter/intra net in this case) and caching (natural side- effect of being recursive? Reduces recursive operations).
HTH
Kaplan, Andrew H. wrote:
Hi there --
I have completed downloading the BIND software onto the system in question, and I am now ready to configure the DNS server. The type of server I want to create is a caching server. The reason for this is I want the system to resolve hostnames exclusively within a private network, 192.168.0.x, and the server will NOT have access to the Internet. I know I will need to modify the /etc/named.conf and other files but I am not familiar with what settings are needed. What tools and/or entries can I use to complete the configuration of the server? Thanks.
If I'm interpreting your requirements properly then you do not want a caching nameserver. That would be used to make inquiries of other nameservers and then store the result for faster retrieval later. Typically you would use one if you had an internet connection and wanted it to forward requests to outside DNS servers. Your internal clients would use your caching nameserver to get their information.
I'm guessing that you want to have a nameserver for your internal network and that there are none presently available.
Before you even start, I'd look over the following docs:
http://www.tldp.org/HOWTO/DNS-HOWTO.html (old, but informative)
Then:
http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/ref-guide/ch-bin...
Once you get started you can search the archives or post to the list with additional, more specific questions.
Barry
Not being a DNS expert by any stretch of the imagination, when I am called upon to set up DNS, I reach for this:
http://langfeldt.net/DNS-HOWTO/BIND-9/
-Steve
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Alexandru E. Ungur -
Barry L. Kline -
Kaplan, Andrew H. -
Steve Bergman -
William L. Maltby