We help IT Professionals succeed at work.
Get Started

Sonicwall One-to-One NAT problem

Rick Mills
Rick Mills asked
on
1,476 Views
Last Modified: 2012-05-09
My client has a Sonicwall TZ 180 Wireless running Standard OS.  They wanted to host their own website, so I setup the web server with a static IP.  I then configured One-to-One NAT on the Sonicwall, using the 2nd of two IP addresses provided by Cox.  All worked beautifully and has been working for 3 months.
Last night, one of the employees went into the office when they realized the web server was not available and found the web server apparently installed some updates and restarted itself.  It was configured for DHCP and no longer had a static IP.  He configured it for the same static IP.
I can remote into the web server.
I can remote into the SBS server and access the website by entering http://webserver.
I cannot browse the Internet from the web server.
If I ping www.google.com from the web server, it resolves to the correct IP, but I receive request timed out messages.
I found that if I disable One-to-Onet NAT on the Sonicwall, I can browse the Internet from the web server.  

As far as I am aware, nothing on the Sonicwall changed.  I don't believe anyone had the password to make any changes.  The web server restarted and was configured with DHCP, so obviously there were some definite changes there.  Disabling One-to-One NAT and being able to browse from the web server and being able to access the website from the LAN certainly make it appear as if the Sonicwall is blocking (or not properly routing) HTTP traffic to the web server.

Does anyone have any suggestions on how to go about troubleshooting this issue?
Comment
Watch Question
Top Expert 2010
Commented:
This problem has been solved!
Unlock 3 Answers and 7 Comments.
See Answers
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE