Hi I have been trying using DLINK  dwm-156. and also huawei-e5151.   Please do let me know which USB 3D/4G vendor and model will work so i can work on testing the validated USB 3G/4G modem.    

I tried all the options, NAT traversal if required, the previous model is working, the document mentiones NAT traversal support so i purchased this.  Looking for an urgent firmware upgrade assistance. the product is not providing what is mentioned in...

Even I am Struggling to find the Site-to-Site  NAT Traversal Feature which is required by me. I just purchased this for the same reason. please do urgently help in providing a firmware upgrade to get this working. Urgently need assistance.