LinuxQuestions.org
Welcome to the most active Linux Forum on the web.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - General > LinuxAnswers Discussion
User Name
Password
LinuxAnswers Discussion This forum is to discuss articles posted to LinuxAnswers.

Notices



Reply
 
Search this Thread
Old 01-23-2005, 09:47 PM   #1
sgrayban
Member
 
Registered: Nov 2004
Location: Spokane, WA
Distribution: Debian 6.0
Posts: 369

Rep: Reputation: 30
Post DISCUSSION: Setting up DNS in Small Subnets


This thread is to discuss the article titled: Setting up DNS in Small Subnets
 
Old 10-04-2005, 01:10 PM   #2
AndeAnderson
Member
 
Registered: Feb 2005
Location: Pennsylvania
Distribution: Debian (maybe)
Posts: 235

Rep: Reputation: 30
Setting up DNS

I had hoped this would help me to understand DNS set-ups.

But, it is started off with "If you try to run an authoritative DNS server for a small network, such as a /26." This sentence does not mean anything to me. what is "a /26" for a network? The added (which contains only 2(32-26)=64 addresses) just added to my confusion. Is that supposed to be a mathmatical statement?

Then, to explain the sample, this sentence finished me off, "In this example, we have a subnet mask of 255.255.255.192 (which is a /26 because the first 26 bits in the mask are 1's). The network's name is therefore 63.127.146.192/26."

Where did this subnet mask come from?

Thanks,
 
Old 10-04-2005, 08:33 PM   #3
sgrayban
Member
 
Registered: Nov 2004
Location: Spokane, WA
Distribution: Debian 6.0
Posts: 369

Original Poster
Rep: Reputation: 30
You can get the subnet mask from almost anyplace on the net -- try googling for "subnet mask calc"
 
Old 10-05-2005, 07:39 AM   #4
AndeAnderson
Member
 
Registered: Feb 2005
Location: Pennsylvania
Distribution: Debian (maybe)
Posts: 235

Rep: Reputation: 30
Thanks for Subnet information

Thanks Scott,

The more I get into Linux the more I wish I had stayed with Unix instead of going MS for Consulting and Customer Support. After about 10 years I am having to relearn a lot of basic information which I did not need to use with MS products.
 
Old 10-05-2005, 07:42 AM   #5
sgrayban
Member
 
Registered: Nov 2004
Location: Spokane, WA
Distribution: Debian 6.0
Posts: 369

Original Poster
Rep: Reputation: 30
Linux "teaches" how to be a network admin. Windows does not which is a shame.
 
Old 10-01-2007, 04:03 PM   #6
flashingcurser
Member
 
Registered: Jan 2003
Distribution: many win/nix/mac
Posts: 259

Rep: Reputation: 31
One thing I must mention. I have had dns admins look over some of my zone files and have gotten a royal chewing out for some things I see in this zone file.
Code:
@ IN SOA malaria.borgnet.us. hostmaster.borgnet.us. (
00000005; Serial Number (not a date)
21600   ; Refresh every 6 hours
3600    ; Retry every hour
1728000 ; Expire every 20 days
21600 ) ; Minimum 6 hours
IN NS malaria.borgnet.us.
IN MX 10 engram.borgnet.us.
IN A 63.127.146.236
The NS and MX records shouldn't give away the real hostname of the computer running it.

For example:
Code:
IN NS ns0.borgnet.us.
.borgnet.us. IN A 63.127.146.236
ns0 IN A 63.127.146.236 ; IP of the nameserver
In this case there is an "A" record to define where ns0 is and you point your ISP or registrar towards ns0 at the IP 63.127.146.236 This will give glue between the two yet not give away your host name "malaria". The same is true of MX.

Code:
IN MX 10 mail0.borgnet.us.
mail0 IN A XXX.XXX.XXX.XXX ; IP of the mail server
The least I can do is save someone from some of the ass-chewings that I received.

 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DISCUSSION: Newbie's Guide to Small Home LAN echo77 LinuxAnswers Discussion 56 03-05-2012 11:27 PM
DISCUSSION: Setting Up a Network Printer using CUPS busbarn LinuxAnswers Discussion 17 04-20-2010 09:25 PM
DISCUSSION: DNS Mara LinuxAnswers Discussion 22 02-25-2010 06:30 AM
DISCUSSION: Configure BIND DNS to Answer Active Directory Queries ghight LinuxAnswers Discussion 1 07-04-2007 10:46 AM
DNS, ROOT servers, and setting up a small personal server urquanmaster Linux - Networking 4 03-10-2005 04:47 AM


All times are GMT -5. The time now is 03:18 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration