Starting with release 11.1, NetScaler ADC offers an easy way to redirect traffic from HTTP to HTTPS within the configuration of a load-balanced vServer. With 11.1, Citrix introduced the paramter -redirectFromPort and -redirectURL.
While playing with a NetScaler ADC in my lab, I discovered a strange error message as I tried to configure the redirect.
Internal vserver couldn’t be set?! Okay, there was already a vServer, that was listening on port 80. After removing the vServer, I was able to setup the redirection and it was working as expected.