I'm new to SolarWinds, so there are plenty of External servers that are providing services on different ports.
for example x.y.w.z:8090 is a Database which is answering the queries or m.n.l.p:7030 is a web server.
I wanted to Monitor the response time for port 8090 and 7030
You can use the out of the box TCP monitor : TCP Port monitor ( if you have SAM)
You could also setup netpath : NetPath - Easy Visual Network Path Analysis | SolarWinds