Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

IIS Website VERY slow when accessed via DNS name; fast when accessed via IP

Posted on 2009-06-30
6
Medium Priority
?
2,432 Views
Last Modified: 2013-12-14
I have a website that is running on IIS 6. The site is built in Visual Studio 2008 using the Crystal Reports plug-in.

When I access it via the DNS A-record, it runs at least 10 time slower than when I access it via the IP address.

When I resolve the A-record with nslookup or something, it resolves quickly, so it is not actually a DNS resolution problem.

I am completely stumped as to what could be causing this. Any ideas?

Thanks!
0
Comment
Question by:netmergence
[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
  • 3
  • 2
6 Comments
 
LVL 39

Expert Comment

by:ChiefIT
ID: 24751967
Slow on all computers or just one?
0
 
LVL 1

Expert Comment

by:Colin_A_Moulder
ID: 24752716
Do you have more than one IP address? Do you have more than one interface? If so, what interface\IP is in DNS?
 
0
 

Author Comment

by:netmergence
ID: 24828327
In response to the first comment, it is slow everywhere outside of the building. I do not have login access to any other internal machines, so I cannot test it from within their LAN.

The server technically has two IP addresses, because it has it's own private IP, then it has the public IP where 80 and 443 are just forwarded to it. However, the server itself only has the one, private IP assigned to its interface. There is just that one interface, and each IP address is only registerred in its corresponding DNS. (Internal DNS resolves the internal IP; external DNS shows the external IP.)

0
NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

 

Accepted Solution

by:
netmergence earned 0 total points
ID: 24828424
I figured it out...

It was the "Integrated Windows Authentication" that was causing problems outside the building. I don't fully understand why it would work, but just be very, very slow, but as soon as I disabled Integrated Authentication and instead enabled Basic Authentication, it started working at the normal speed.

How on earth authentication is tied to the DNS name vs. the IP address is beyond me. I'll award the poitns to anyone who can come up with a plausible explination!
0
 
LVL 39

Expert Comment

by:ChiefIT
ID: 24870266
Will you close the question and refund yourself points by accepting

07/10/09 02:13 PM, ID: 24828424

as your answer.

I am glad to see this is fixed for you. I am now reviewing IWA to see the ramifications of it.
0
 
LVL 39

Expert Comment

by:ChiefIT
ID: 24870286
I also wanted to tell you from what I read, by disabling IWA, you are going to NTLM and LM hash authentication. This is an outdated protocol. We are now on NTLMv5 (Kerberos). So, I can't figure out for the life of me, why enabling the older authentication protocols works best for you.

0

Featured Post

Simplify Your Workload with One Tool

How do you combat today’s intelligent hacker while managing multiple domains and platforms? By simplifying your workload with one tool. With Lunarpages hosting through Plesk Onyx, you can:

Automate SSL generation and installation with two clicks
Experience total server control

Question has a verified solution.

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

WARNING:   If you follow the instructions here, you will wipe out your VTP and VLAN configurations.  Make sure you have backed up your switch!!! I recently had some issues with a few low-end Cisco routers (RV325) and I opened a case with Cisco TA…
This month, Experts Exchange’s free Course of the Month is focused on CompTIA IT Fundamentals.
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

636 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