Which of the following are configuration elements of a firewall filter?

The configuration elements of a firewall filter are accurately represented by "term," "from," and "then." In Juniper devices, a firewall filter is designed using terms that define specific match conditions or criteria, utilizing the "from" keyword to specify the matching attributes, and the "then" keyword to define the action taken when those match conditions are met.

This structure allows for a detailed and granular control over the traffic that passes through the firewall. Each term can have its own distinct conditions and actions, making it possible to implement complex filtering strategies. By defining multiple terms within a single filter, various types of traffic can be managed differently, according to the desired policy.

The other options do not accurately reflect the standard nomenclature used in firewall filter configurations in Juniper devices. For instance, "filter, action, term" mixes generic terms with specific components and lacks the precise structure of the configuration. Similarly, "policy, rule, action" suggests concepts that are more aligned with broader security frameworks but do not represent the specific elements of a firewall filter. Lastly, "entry, session, action" introduces terms that are not applicable to the configuration of firewall filters in this context.