In a custom event handler filter, what does the example “Dstip==192.168.1.168 and hostname ~ 'Facebook'” illustrate?

The example “Dstip==192.168.1.168 and hostname ~ 'Facebook'” demonstrates a complex filter due to the combination of logical conditions being applied to multiple attributes. In this case, the filter is checking two separate criteria: a specific destination IP address and whether the hostname contains the text 'Facebook'.

Using logical operators, such as "and," to connect these conditions indicates that both must be satisfied for the event to be matched. This showcases a more advanced level of filtering that goes beyond simple comparisons or single checks. The complexity arises from combining different types of matches — one being an equality check for an IP address and the other a regex-like text inclusion check for the hostname. Thus, it is a comprehensive expression that allows for more nuanced event handling in the context of the Fortinet FortiAnalyzer.