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I've had need of a personal AP connected to some remote WiFi signal on several occasions so ended up building my Turris to support this. This is a common scenario for people traveling in an RV or hosting events where they want to provide Internet access through various wireless (or wired) connections & don't want to have to reconfigure all the clients.

I disconnected the 2.4ghz only radio from the antennas & added 2 more u.fl to RP-SMA pigtails. That way I can plug a directional antenna into that radio for better range to the remote WiFi. It also lets the 2.4/5ghz radio get exclusive use of the 3 standard antennas. This is not required, but helps to decrease interference & increase range & throughput.

====== Setup & configuration

  1. Start with a fresh unconfigured Omina Turris
  2. Connect WAN port of the Turris to Internet via Ethernet to facilitate setup
  3. Connect your workstation to any of the LAN ports
  4. Connect to http://192.168.1.1 with a web browser
  5. Proceed with standard Omina Turris setup wizard presented on the web page
  6. Set a secure password & check the use same password for advanced configuration
  7. Leave DHCP & DHCPv6 at defaults (unless your ISP uses a static IP or PPPoE)
  8. If connectivity fails, check cables & stuff
  9. Set region as appropriate
  10. Set timezone (should be automatic)
  11. Synchronize time with PC
  12. Automatic updates on
  13. Auto update may fail on first try
  14. Set router IP to 192.168.100.1 (as it's an unusual private subnet & less likely to have a conflict, this step is optional but I find helps prevent issues) leaving DHCP enabled & start/max leases at 100/150 & check Guest network (use subnet 192.168.101.0/24)
  15. In your Windows (Linux or other OS users should be aware of the appropriate commands to acquire a new DHCP IP) workstation From a command prompt with administrative permissions type the following commands to get the workstation using an IP on the new subnet
  - ipconfig /release
  - ipconfig /renew
  1. Go to 192.168.100.1/wizard/step/8 then hit next
  2. Setup WiFi
  3. WiFi 1 will be your local AP, set it up with whatever SSID you want & enabling guest if you want
  4. WiFi 2 will be your uplink connection, (temporarily) name it uplink or something
  5. Go to Advanced Administration & click on the LuCI web interface link
  6. Network > Wireless
  7. Go down to (radio1) & click on Scan
  8. Find your WiFi network that you want to connect to in the list & click on Join Network next to it
  9. Enter the appropriate password for that network if required
  10. Leave the “Name of the new network” at the default “wwan”
  11. Leave the firewall zone as WAN
  12. Hit apply
  13. Review the settings on the next page then hit Save & Apply
  14. Test the connection
  15. Make sure WiFi is disabled on your workstation (or connect to only the WiFi for the AP)
  16. Plug your workstation into one of the LAN ports (or connect to only the WiFi for the AP)
  17. Unplug the WAN port
  18. Validate the Internet still works

At this point you should be able to connect to your personal SSID (or via an Ethernet cable to any of the LAN ports) & get Internet access via the remote WiFi.