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OmnipeekOmnipeek User Guide
Creating and Using Filters
Creating and Using Filters
About filters
Filters are used to isolate particular types of traffic on the network for troubleshooting, analysis, and diagnostics. If you want to check a problem between two particular devices, perhaps a computer and a printer, address filters can capture just the traffic between these two devices. If you are having a problem with a particular function on your network, a protocol filter can help you locate traffic related to that particular function.
Filters work by testing packets against the criteria specified in the filter. If the contents or attributes of a packet match the criteria specified in a filter, the packet is said to “match” the filter. You can build filters to test for just about anything found in a packet: addresses, protocols, sub-protocols, ports, error conditions, and more.
NOTE: Filters created from a connected Capture Engine are available to that Capture Engine only. If you are not connected to a Capture Engine and you create a filter, that filter is available for local captures only.