SmartSDR for iOS VPN Issues

  • 1
  • Problem
  • Updated 2 years ago
  • Solved
So an interesting problem that I've been (seemingly randomly) facing when using SmartSDR for iOS over a VPN. Using either L2TP or PPTP on my iPad pro/iPhone at work (FIOS ISP, WatchGuard firewall/AP) or iPad Pro from my iPhone hotspot (LTE), I've had no issues connecting on both an iPhone 6 and iPad Pro.

I went  to connect to connect via both L2TP and PPTP from our club meeting's WiFi connection at the Elks club. No idea who the ISP is. The Flex shows up during discovery correctly, but when I click to access the Flex, it goes back to the "you are currently not connected Tap here to connect." Same issue on both iPad and iPhone.

On a Cablevision DOCSIS3 connection at a family weekend house, L2TP or PPTP will present me with the Flex at the discovery screen correctly. However, when I go to connect to it, I get the same issue as above. Just sits at the connection screen. I thought it might be the router with a UDP packet handling issue, so I swapped out for a newer Netgear router, which didn't resolve the problem. This problem occurs on both iPhone/iPad. 

Here's the kicker. We have no cell service at the family weekend house, so I put in an AT&T Microcell a few years back. If I disconnect from the WiFi, and move over to the microcell connection for data, and VPN back home using either L2TP or PPTP, the app works as expected, connecting to the radio just fine. The Microcell is using the same internet connection for it's backhaul, connected to the router via ethernet. 

Really scratching my head on this one...
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Rob Fissel

  • 268 Posts
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Posted 2 years ago

  • 1
Photo of Rob Fissel

Rob Fissel

  • 268 Posts
  • 47 Reply Likes
Official Response
Just a quick update. Changing the home networks subnet to 192.168.12.x has resolved the remote issue for me. I'm back at the location that caused this issue in the past, and can now succesfully VPN back to the home network and connect to the Flex with SmartSDR for iOS.