TRITON - Web Security Help, Version 7.7 - Websense

Refine Filtering PoliciesUsing Bandwidth Optimizer to manage bandwidthTRITON - Web Security Help | Web Security Solutions | Version 7.7.xRelated topics: Working with categories, page 262 Working with protocols, page 272 Configuring the default Bandwidth Optimizer limits, page 280When you create a category or protocol filter, you can elect to limit access to acategory or protocol based on bandwidth usage.Block access to categories or protocols based on total network bandwidth usage.Block access to categories based on total bandwidth usage by HTTP traffic.Block access to a specific protocol based on bandwidth usage by that protocol.NoteIf you have Websense Web Security Gateway Anywhere,be aware that hybrid filtering does not enforce bandwidthbasedrestrictions.For example:Block the AOL Instant Messaging protocol if total network bandwidth usageexceeds 50% of available bandwidth, or if current bandwidth usage for AIMexceeds 10% of the total network bandwidth.Block the Sports category when total network bandwidth usage reaches 75%, orwhen bandwidth usage by all HTTP traffic reaches 60% of available networkbandwidth.Protocol bandwidth usage includes traffic over all ports, IP addresses, or signaturesdefined for the protocol. This means that if a protocol or Internet application usesmultiple ports for data transfer, traffic across all of the ports included in the protocoldefinition are counted toward that protocol’s bandwidth usage total. If an Internetapplication uses a port not included in the protocol definition, however, traffic overthat port is not included in bandwidth usage measurements.Websense software records bandwidth used by filtered TCP- and UDP-basedprotocols.Websense, Inc., updates Websense protocol definitions regularly to ensure bandwidthmeasurement accuracy.Network Agent sends network bandwidth data to Filtering Service at a predeterminedinterval. This ensures that Websense software accurately monitors bandwidth usage,and receives measurements that are closest to an average.TRITON - Web Security Help 279