---
title: Preconditions (Selectors)
slug: ps/help/en_us/vwaf/ag/preconditions-selectors
docTags: 
createdAt: 2026-08-02T10:05:41.292Z
---

In vWAF you can create the security configuration in detail on the level of individual paths (see [Editing Paths](docId\:mKz3Ca_Lly9zbiQXRPqiN)). The validity of the rules stored for these paths can be restricted using preconditions (see [Application Mapping, Paths, Preconditions](docId\:GfHMSuU71Mo-mbj3skrNg)).

## Overview

The following selectors are available for defining preconditions:

- [Argument Selector](docId\:RM5M9TV_MboALAZAit55g)
  Permits path-specific handling dependent on specific arguments in an URL.
- [Client IP Selector](docId\:dZfm9dCPQplr7SGXxCiJ8)
  Specifies IP sectors to which path-specific rules are to apply.
- [Content Type Selector](docId\:LO20D6tcQ0Dk2oPeuun5q)
  Permits path-specific handling dependent on the content type specified in a request (Internet Media Type, MIME Type).
- [Content Length Selector](docId\:T7N_h9nRjFnUTH4wTWLha)
  Permits path-specific handling dependent on the content length of a request.
- [Host Name Selector](docId\:h3c5KfJ5DBRZG8DFVj1RT)
  Permits specific path handling based on the specified host names.
- [HTTP Method Selector](docId\:oMlfx6NUHuQPvrxwTggOa)
  Permits path-specific handling dependent on the method specified in a request (GET, HEAD, POST).
- [The HTTP Protocol Selector](docId\:Aag4NqJJpZBsLo1a1L5ap)
  Ensures that vWAF only includes a ruleset when the ruleset is carried out via a specific version of the HTTP protocol.
- [The Request Selector](docId\:myyJnk1MtF3E2MhrWuhxh)
  Ensures that vWAF only considers a ruleset for a path if a specific request line has been sent.
- [SSL Selector](docId:7zub8u73JKxMUZiZYyvV5)
  Ensures that vWAF only considers a ruleset for a path when a request is made via an SSL connection, or only when it’s made via a non-SSL connection.
- [Time Selector](docId\:bQ0PhCg2lfbU6QUiGDrqA)
  Allows path-specific rules to be handled based on the day of the week and time.
- [Url Selector](docId\:IayMzK0So1f459bJZW-gP)
  Can further restrict the URLs of a path.