We help IT Professionals succeed at work.
Get Started

SonicWall blocks valid WAN IPs as "IP spoof"

9,029 Views
Last Modified: 2013-12-14
Our SonicWall TZ190 blocks some important and legitimate WAN-to-LAN traffic just because the incoming IP sources are similar to our OPTional WAN IP (which is a dynamic IP, not a static one) . For example, outside WAN 74.130.X.Y is blocked as an "IP Spoof" because our OPTional WAN IP is 74.130.Y.X.  (I'm not a network expert, so please forgive my simple explanation.)

Unfortunately, the TZ190 doesn't provide an easy or obvious way to solve this problem, at least not for me.

Does anyone know of a solution? Could I configure rules that would work around the false positives in spoof-detection? Could I connect the OPTional WAN modem to another router and then to the SonicWall? If so, how so? Can incoming traffic be forced through our Primary Wan (which IS a static IP and works fine)?

Any suggestions would be greatly appreciated; I'm on the hook for this at a new place of employment.
Comment
Watch Question
CERTIFIED EXPERT
Commented:
This problem has been solved!
Unlock 6 Answers and 19 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

An Experts Exchange subscription includes unlimited access to online courses.

Get Started
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