italk(IT)

If policy of your organization is not allow user to using internet fortigate firewall can support your organization policy. you config that on policy firewall and apply schedule object to policy that allow client access to the internet.

Internet bandwidth from ISP are limited from your packet that you pay. You should manage bandwidth internet of your organization for enough to use. Sometimes bandwidth internet is enough for general usage but someone may be use torrent or infected a virus effect to extra use bandwidth. How do you know who are use extra bandwidth? On pfsense have add-on package "Bandwidthd". Bandwidth show dashboard Top user usage in day, week, month. You can use information from bandwidthd to verify usability of your user and warn their to reduce bandwidth usage. Step As Video  

WAN loadbalance is bundles bandwidth of all WAN. It is not increase speed of internet but it balance 2 internet from WAN. Assume, 1 WAN is 1 lane road ,2 WAN are 2 lane road. WAN loadbalance allow traffic on both lane rode. It can support more than car on a road but it cannot increase speed of car. Fail over is function to swap internet between WAN if WAN 1 down fail over will swap all traffic  to WAN 2. Client can continue to access the internet. Step As Video