[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

Pattern based DNS entry

Posted on 2004-10-06
3
Medium Priority
?
483 Views
Last Modified: 2010-05-18
Whenever a URL is typed with a extension of .mirror.sytes.org the request is directed to 62.3.254.150 i.e www.google.com.mirror.sytes.org, www.yahoo.com.mirror.sytes.org. And in this site they provide the mirror image of the original site. Hows is it possible to have the DNS return a particular IP for URLs ends with a string .mirror.sytes.org. Is there any concept like pattern based DNS entry?
0
Comment
Question by:jacobselvin
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 16

Expert Comment

by:The--Captain
ID: 12246330
Wildcard DNS is done all the time - for another example type your.name.isgay.com - I apologize in advance if that example offends anyone - it's the first example I can think of off the top of my head aside from Verisign's Sitefinder (which has thankfully been disabled, hopefully for good)

While bind 9 from ISC (Internet Systems Consortium) has no difficulties handling DNS wildcards, I am uncertain as to whether or not Microsoft DNS/AD would readily do this.

Hope that helps.

Cheers,
-Jon
0
 

Author Comment

by:jacobselvin
ID: 12255030
Hi Jon,
    Does it mean that when a URL is submitted to a DNS Server it first tries to match it with some patterns ( like *.mirror.sytes.org, *.isgay.com ) and if it's not able to find a one then it'll look for a exact match and returns the corresponding IP address. Any idea how such entries are made into DNS server?
Thanx,
- Jacob
0
 
LVL 16

Accepted Solution

by:
The--Captain earned 750 total points
ID: 12256645
>Does it mean that when a URL is submitted to a DNS Server it first tries to match it with some patterns ( like *.mirror.sytes.org,
>*.isgay.com ) and if it's not able to find a one then it'll look for a exact match and returns the corresponding IP address?

Actually, I think it moves from a most-specific to less-specific (as most pattern matchers attempt to do), which would be opposite of your description above.

>Any idea how such entries are made into DNS server?

In bind, you simply add an asterisk (*) in your zone file to match anything, i.e.

*.example.com.     IN     MX      5 mail.example.com.

or in your in-addr.arpa zone file

*         IN      PTR   too-lazy-to-configure-reverse-dns.example.com.

Cheers,
-Jon

P.S.  Try googling "bind dns wildcard" (without the quotes) to find out more about this...
0

Featured Post

Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you’re involved with your company’s wide area network (WAN), you’ve probably heard about SD-WANs. They’re the “boy wonder” of networking, ostensibly allowing companies to replace expensive MPLS lines with low-cost Internet access. But, are they …
This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question