# Filters The following sections describe how to select and filter log messages. * [Using filters](../../docs/axosyslog-core/chapter-routing-filters/filters/configuring-filters/index.md) describes how to configure and use filters. * [Combining filters with boolean operators](../../docs/axosyslog-core/chapter-routing-filters/filters/filters-boolean/index.md) shows how to create complex filters using boolean operators. * [Comparing macro values in filters](../../docs/axosyslog-core/chapter-routing-filters/filters/filters-comparing/index.md) explains how to evaluate macros in filters. * [Using wildcards, special characters, and regular expressions in filters](../../docs/axosyslog-core/chapter-routing-filters/filters/regular-expr/index.md) provides tips on using regular expressions. * [Tagging messages](../../docs/axosyslog-core/chapter-routing-filters/filters/tagging-messages/index.md) explains how to tag messages and how to filter on the tags. * [Filter functions](../../docs/axosyslog-core/chapter-routing-filters/filters/reference-filters/index.md) is a detailed description of the filter functions available in AxoSyslog. * * * [Using filters](../../docs/axosyslog-core/chapter-routing-filters/filters/configuring-filters/index.md) [Combining filters with boolean operators](../../docs/axosyslog-core/chapter-routing-filters/filters/filters-boolean/index.md) [Comparing macro values in filters](../../docs/axosyslog-core/chapter-routing-filters/filters/filters-comparing/index.md) [Using wildcards, special characters, and regular expressions in filters](../../docs/axosyslog-core/chapter-routing-filters/filters/regular-expr/index.md) [Tagging messages](../../docs/axosyslog-core/chapter-routing-filters/filters/tagging-messages/index.md) [Filter functions](../../docs/axosyslog-core/chapter-routing-filters/filters/reference-filters/index.md) Last modified August 7, 2024: [Filter section formatting fixes (35821bcb)]()