Added optional whitelist feature

run-rexuiz.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+if [ "$WHITELIST_ENABLED" = "true" ]; then
+    # Load in allowed IPs from file
+    mapfile -t allowed_ips < /home/rexuiz/.rexuiz/data/allowed_ips.txt
+
+    # Enable UFW firewall
+    ufw --force reset
+    ufw default deny incoming
+    ufw default allow outgoing
+
+    # Allow specified IPs
+    for ip in "${allowed_ips[@]}"
+    do
+        ufw allow from "$ip" to any port 26000 proto udp
+    done
+
+    ufw --force enable
+fi
+
+# Start server
+su rexuiz -c "/home/rexuiz/Rexuiz/server/rexuiz-linux-dedicated-x86_64"