Question: What are the network requirements for the license server in r9.8?
Answer: You need to be able to access port 80 (http) at my.nalpeiron.com (126.96.36.199) to license erwin DM online.
For Data Modeler 2018R1, you can use either Port 80 or 443.
If you have the proxy patch installed, port is 443 (https). The proxy patch us included in Data Modeler 2018R1.