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+# Simple Masquerade of Machines on Network through a WAN Interface
+
+Need a simple (no firewall) isolated network within your network where those machines need to "talk outside".     
+
+My use case is a stand alone IOT system that had more than one host machine.  By isolating that with a "gateway" sbc with dual nic (used usb/ethernet) I can have consistent IP addressing no matter where the system is deployed.  
+
+This really is only appropriate within a private LAN.  If the WAN side is going to be public facing then you need a more robust firewall like firehol.
+
+Included in repo are three bash scripts and Systemd Service file.
+
+1. clone repo
+
+2. edit the scripts changing the wan/lan Nic names
+
+3. edit service file changing the path to scripts
+
+4.  link or copy the service file to `/etc/systemd/system`
+
+
+Then to start, stop, persist
+
+```
+sudo systemctl start masquerade
+sudo systemctl stop masquerade  
+sudo systemctl enable masquerade  
+```
+
+try starting the service then ping something "outside" from a host "inside" (not the gateway)
+
+if it works then enable it and you are set.
+
+inspired by this post
+https://superuser.com/a/939657/430020