# Wireshark Filters

Filters can be used by wireshark to limit the amount of items identified in a capture. Filters are displayed with comparison operators&#x20;

| Operator   | Comparison                   |
| ---------- | ---------------------------- |
| `==`       | equals                       |
| `!=`       | not equal                    |
| `>`        | greater than                 |
| `<`        | less than                    |
| `>=`       | greater than or equal        |
| `<=`       | less than or equal           |
| `contains` | value is inside of the field |
| `matches`  | regex matching for a field   |
| `&&`       | and                          |
| `\|\|`     | or                           |
| `!`        | not                          |


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://notes.m4lwhere.org/defensive/network-forensics/wireshark-filters.md?ask=<question>
```

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The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
