As Dray Tek WCF is performed by your router
- your point of entry to the Internet
- it is far more difficult to circumvent than software solutions installed on each client/PC & applies to guest PCs too (laptops etc.). Blocking/filtering can be selective for certain computers, users or groups too, so that, for example, managers can have less filtering imposed than other users & time schedules can apply these content filtering for specific time periods only (the facilities & granularity of this depends on the specific model of router selected).