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I have set up a WiFi network in Hotspot mode on an old PC running Ubuntu Mate. The computers on the network are unable to ping each other or even the hotspot. I believe it is an issue with IP assignment. How can I configure this? (A DHCP server, or a pre-assigned list of IP-MAC mappings, would both be fine, but I don't know where to start looking. I fiddled around with iwconfig and ifconfig to no avail.)

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    you can confirm or discount IP address issues just by inspecting the IP address of several devices on the hotspot, and determine whether they are all in the same network. More likely, the hotspot is performing AP Client isolation, which prevents users in coffee shops from trying to hack each other, and helps limit intrusion when someone cracks your wifi. Commented Jan 9, 2018 at 12:54
  • even when I only have one device connected, it is unable to ping the hotspot itself
    – speedstyle
    Commented Jan 9, 2018 at 13:42
  • that may be a differant problem. focus on two devices talking to each other for now. Secure wifi scenarios often prevent wireless users from accessing the router to protect the management instrumentation, and many firewalls block ping. Are the devices able to connect through the wifi to the Internet? Commented Jan 9, 2018 at 14:27
  • I don't know (the hotspot isn't connected to the internet)
    – speedstyle
    Commented Jan 10, 2018 at 12:50
  • The hotspot is a file server, the only reason I want to connect to it is to transfer files
    – speedstyle
    Commented Jan 10, 2018 at 12:51

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