add wiregard notes

wireguard/killswitch.md

@@ -0,0 +1,38 @@
+# Forward all traffic through a wireguard VPN
+
+* VPN: https://lnvpn.net/
+
+* How to: https://www.wireguard.com/netns/
+
+* Kill Switch with PostUp and PreDown WG syntax https://www.ivpn.net/knowledgebase/linux/linux-wireguard-kill-switch/
+
+* Simple ufw killswitch from https://www.reddit.com/r/WireGuard/comments/bpmssc/comment/envrhu2
+    ```
+    another option is to create 2 bash scripts that make use of ufw.
+
+    firewall.sh (change tun0 to what ever your wireguard interface is you can find it with "ifconfig" probably has "wg" in it somewhere)
+
+        sudo ufw reset
+
+        sudo ufw default deny incoming
+
+        sudo ufw default deny outgoing
+
+        sudo ufw allow out on tun0 from any to any
+
+        sudo ufw enable
+
+    And unfirewall.sh
+
+        sudo ufw reset
+
+        sudo ufw default deny incoming
+
+        sudo ufw default allow outgoing
+
+        sudo ufw enable
+
+    make them both executable with chmod. then when you want the killswitch on "sudo bash firewall.sh" then you can test it by disconnecting from wireguard and ur internet shouldnt be working.
+
+    and when you want to turn it off just run unfirewall.sh
+    ```