Each server should have it's own IP address, then there is an "active server" IP address. The idea is you just need to go to one IP address to reach which ever one is active, but can go to each individually if necessary.
I'm not sure what you meant by "via the active server". But, if you mean can you use your browser to get to the active server, then some how browse to the standy-by from there, then no you can't do that. You have to go directly to the stand-by's IP address.