Overall, in theory, yes… But in practical application it can only handle a few simultaneous requests. Someone tested the limit once, I think it varied between like 2-5 connections and then it would choke and end all the streams as I recall. The cams have a finite amount of RAM, processor, bandwidth capacity, etc. So technically if all 21 of you tried at the same time it would not actually try to serve you all, it would reject most, if not all of you… Basically suffering a DDoS attack to take it offline.