Open the TP04_02.xml file and move to the Transport mode.
Send a TCP request on port 80 from st5 to www: the sending is accepted by www.
Carry out the same sending from st1: it is also accepted.
Choose "Tables", and "Filter rules" in rt1’s pop-up menu, and add the line illustrated below (just input the 10.0.0.0 network address in the IP source field).
