IP Forwarding and Routing RPi 2B Jessie - Raspberry Pi
How To Set Up a Firewall Using Iptables on Ubuntu 14.04 May 06, 2014 Forward a TCP port to another IP or port using NAT with The next steps prepare the system and iptables for NAT. Most commands can be used on CentOS, RHEL and Debian in exactly the same way. If there are some differences, I mention them (so if nothing special is mentioned, the commands are interchangeable). IP forwarding. NAT uses IP forwarding and by default it’s not enabled in the kernel parameters.
Jan 20, 2014
To prevent this, iptables provides routing and forwarding policies that can be implemented to prevent aberrant usage of network resources. The FORWARD policy allows an administrator to control where packets can be routed within a LAN. For example, to allow forwarding for the entire LAN (assuming the firewall/gateway is assigned an internal IP linux - How can I port forward with iptables? - Server Fault 2) Add 2 iptables rules to forward a specific TCP port: To rewrite the destination IP of the packet (and back in the reply packet): iptables -A PREROUTING -t nat -p tcp -i ppp0 --dport 8001 -j DNAT --to-destination 192.168.1.200:8080 To rewrite the source IP of the packet to the IP of the gateway (and back in the reply packet):
Forward traffic from wlan0 to eth0 interface · GitHub
How-To: Redirecting network traffic to a new IP using IPtables