working base

scripts/setup-router.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+
+set -e
+
+ROUTER_TYPE="$1"
+
+echo "Setting up $ROUTER_TYPE router..."
+
+# fix dns 
+echo "nameserver 192.168.10.1" > /etc/resolv.conf
+
+apk add --no-cache iputils iptables
+
+# Enable IP forwarding
+echo 1 > /proc/sys/net/ipv4/ip_forward
+sysctl -w net.ipv4.ip_forward=1
+
+if [ "$ROUTER_TYPE" = "primary" ]; then
+    echo "Configuring PRIMARY router (192.168.200.11 192.168.202.11 172.17.0.2)"
+    
+    ip addr show
+    echo "Routes:"
+    ip route show
+    
+    # NAT for traffic from primary network to target network
+    iptables -t nat -A POSTROUTING -s 192.168.200.0/24 -d 192.168.202.0/24 -j MASQUERADE
+    iptables -P FORWARD ACCEPT
+
+elif [ "$ROUTER_TYPE" = "secondary" ]; then
+    echo "Configuring SECONDARY router (192.168.201.11 ↔ 192.168.202.12 ↔ 172.17.0.3)"
+    
+    ip addr show
+    echo "Routes:"
+    ip route show
+    
+    # NAT for traffic from secondary network to target network
+    iptables -t nat -A POSTROUTING -s 192.168.201.0/24 -d 192.168.202.0/24 -j MASQUERADE
+    iptables -P FORWARD ACCEPT
+else
+    echo "Error: Invalid router type. Use 'primary' or 'secondary'"
+    exit 1
+fi
+
+echo "Secondary router setup complete"
+echo "NAT rules:"
+iptables -t nat -L POSTROUTING -n -v
+
+# Keep container running
+echo "Router is running. Monitoring interfaces..."
+while true; do
+    echo "$(date): Router $ROUTER_TYPE status - interfaces up"
+    sleep 60
+done