Skip to main content
Information Security

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

6
  • Hi and welcome to Information Security SE. This is a good question, but a bit broad as it stands. Maybe It's also sligtly off-topic here because it seems more about a feature and configuration than on security per se. Commented Mar 13, 2020 at 7:55
  • Since this may be very specific please add make and model of your router and maybe also some configuration details for your VPN. Do you run the VPN endpoint on that same router or on another device? Commented Mar 13, 2020 at 7:56
  • More information on the VPN and OS involved could be useful. In general, this can happen if the VPN tunnels or blocks ALL IPv6 traffic, including ICMP packets used for the Neighbor Discovery Protocol (NDP), in which case it would seem to other IPv6 hosts on the network as if the device wasn't there anymore. Commented Mar 13, 2020 at 8:36
  • @Marcel, thank you for your warm welcome to the group. I am trying to learn about VPNs, routers and access control, as I wrestle with my own router. I am not trouble shooting it; that's better left to the helpdesk. The router is Actiontec T3200, I believe broadcom inside. The device is an iPhone running VPN360. The firewall is off, and I'd rather not chase port numbers to block (smart) VPNs. It's possible that the VPN only allows IPv4, I don't know, I will look for that info. Still, the router should have restricted the device by its IPv4 address too, if that's how it does it, no? Commented Mar 13, 2020 at 14:45
  • I think, it would be best to actually analyze the traffic from vpn enabled endpoint to wifi router. With that, you will be able to understand what is going on. Try to install wireshark on your laptop, connect it to wifi router via ethernet cable, and enable hotspot on laptop's wifi. Then run wireshark and analyze packets sent to your laptops wifi after connecting your iphone with vpn enabled to your laptop's hotspot. And post the results please. Commented Mar 13, 2020 at 15:13