SunQuest
           DNS
 
Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
User Name:
Password:
Remember me
Go Back   Dev Shed Forums > System Administration > DNS
Reload this Page

dns wildcards, good idea?

Discuss dns wildcards, good idea? in the DNS forum on Dev Shed.
dns wildcards, good idea? DNS forum discussing issues, servers, and configurations. The Domain Name System (DNS) is what the Internet uses to translate website names into IP addresses.

Reply
Add This Thread To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 
« Previous Thread | Next Thread »  
Thread Tools Search this Thread Rate Thread Display Modes
 
Unread Dev Shed Forums Sponsor:
Get inside! Sample the range of functionality easily built with JMSL Library for Time Series Data Analysis, Heat Maps, Portfolio Optimization, Monte Carlo Simulation, Stock Price Charting and more. Download Now!
  #1  
Old December 25th, 2003, 05:21 PM
hoffa hoffa is offline
Contributing User
Dev Shed Newbie (0 - 499 posts)
  
Join Date: May 2001
Posts: 55 hoffa User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: < 1 sec
Reputation Power: 8
dns wildcards, good idea?
I want to simplify my dns setup. I plan on adding A records in BIND for each of my domains for

*.site1.com. IN A 69.24.57.12

Then I plan on just adding ServerAlias in apache for *.site1.com.

That way it should resolve to anything.site1.com. I had one setup like this but it wasn't resolving for some reason. On my old server, I think I had 2 A records for each domain such as:

*.site1.com. IN A 69.24.57.12
site1.com. IN A 69.24.57.12

I'm wondering exactly what I need to get it to work. I've heard people in past say that wildcard dns entries like * is a bad idea, but I haven't heard any reasonable answer why? People just say stay away from it, but provide no reason. Anyone know if this myth has any weight to it today?
Reply With Quote
  #2  
Old December 25th, 2003, 05:48 PM
freebsd freebsd is offline
Contributing User
Dev Shed Newbie (0 - 499 posts)
  
Join Date: Jan 2001
Posts: 5 freebsd User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: < 1 sec
Reputation Power: 0
Quote:
I'm wondering exactly what I need to get it to work
When it comes to DNS troubles, 99% of the time you need to provide us your real domain.
Quote:
People just say stay away from it, but provide no reason

1) A dozen security exploits related to DNS wildcard being enabled
2) DNS queries could fail unexpectedly because of cache posion
Reply With Quote
  #3  
Old December 26th, 2003, 12:40 AM
SilentRage's Avatar
SilentRage SilentRage is offline
DNS/BIND Guru
Dev Shed Specialist (4000 - 4499 posts)
  
Join Date: Jun 2003
Location: OH, USA
Posts: 4,193 SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level)SilentRage User rank is Second Lieutenant (5000 - 10000 Reputation Level) 
Time spent in forums: 1 Week 5 Days 14 h 27 m 56 sec
Reputation Power: 77
keep the wildcarding in the apache virtual config cause it's more (drive and memory) space and (request matching) processing efficient, but be explicit in DNS cause wildcarding is unnatural and can be the cause of problems unknown. Wildcarding in DNS is NOT more processing (query matching) efficient even though it is space efficient.
__________________
Send me a private message if you would like me to setup your DNS for you for a price of your choosing. This is the preferred method if your DNS needs to be fixed/setup fast and you don't have the time to bounce messages back and forth on a forum. Also, check out these links:

Whois Direct | DNS Crawler | NS Trace | Compare Free DNS Hosts
Last edited by SilentRage : December 26th, 2003 at 12:45 AM.
Reply With Quote
Reply

Viewing: Dev Shed Forums > System Administration > DNS > dns wildcards, good idea?

« Previous Thread | Next Thread »

Thread Tools  Search this Thread 
Search this Thread:

Advanced Search
Display Modes  Rate This Thread 
Linear Mode Linear Mode
Rate This Thread:


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox
Forum Jump


Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
  
 





© 2003-2008 by Developer Shed. All rights reserved. DS Cluster 6 hosted by Hostway.