How to make server inside rattan connectable to public network?

[BobAnkh]

Take iperf3 as an example

We can run the following command to start an iperf3 server inside Rattan:

rattan link --downlink-delay=10ms -- ip a && iperf3 -s

Here, we also use ip a to display NICs (network interfaces) inside the Rattan network ns, in order to support port forwarding.

Then we should check the IP address of NICs beginning with vL1-L, which usually begins with 10.0.1, e.g., 10.1.1.1/32.

Then we should set port forwarding on the host, for example, forwarding port 35201 on the host to port 5201 inside Rattan.

iptables -t nat -A PREROUTING -p tcp --dport 35201 -j DNAT --to-destination 10.1.1.1:5201