Thank you all for the help,
What my company really wants to do is redirect
http://<Hostname1>:5<instancenumber>00>/irj/portalto
https://<hostname2>:5<instancenumber>00>/irj/portal
Hostname has also been modified to go to a new hostname, but the IP Address is the same.
Now I have tried to go into http://<Hostname>:5<instancenumber>00>nwa and went into virtual hosts and created a new virtual host apart from the default one.
I am still doing R&D in Dev and Qua. We are using a thrid party load balancer and not the standar SAP Web Dispatcher.
Help is appreciated