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HTTP policies

HTTP policies allow you to intercept all HTTP and HTTPS requests and either block, allow, or override specific elements such as websites, IP addresses, and file types. HTTP policies operate on Layer 7 for all TCP (and optionally UDP) traffic sent over ports 80 and 443.

An HTTP policy consists of an Action as well as a logical expression that determines the scope of the policy. To build an expression, you need to choose a Selector and an Operator, and enter a value or range of values in the Value field.

​​ Actions

Actions in HTTP policies allow you to choose what to do with a given set of elements (domains, IP addresses, file types, and so on). You can assign one action per policy.

​​ Allow

The Allow action allows outbound traffic to reach destinations you specify within the Selectors and Value fields. For example, the following configuration allows traffic to reach all websites we categorize as belonging to the Education content category:

SelectorOperatorValueAction
Content CategoriesinEducationAllow

​​ Block

The Block action blocks outbound traffic from reaching destinations you specify within the Selectors and Value fields. For example, the following configuration blocks users from being able to upload any file type to Google Drive:

SelectorOperatorValueAction
ApplicationinGoogle DriveBlock
Upload Mime Typematches regex.*

​​ Isolate

For more information on this action, refer to the documentation on Browser Isolation policies.

​​ Do Not Isolate

For more information on this action, refer to the documentation on Browser Isolation policies.

​​ Do Not Inspect

Do Not Inspect lets you bypass certain elements from inspection. To prevent Gateway from decrypting and inspecting HTTPS traffic, your policy must match against the Server Name Indicator (SNI) in the TLS header. Learn more about applications which may require a Do Not Inspect policy.

All Do Not Inspect rules are evaluated first, before any Allow or Block rules, to determine if decryption should occur. Learn more about the order of enforcement for HTTP policies.

​​ Do Not Scan

When an admin enables AV scanning for uploads and/or downloads, Gateway will scan every supported file. Admins can selectively choose to disable scanning by leveraging the HTTP rules. For example, to prevent AV scanning of files uploaded to or downloaded from example.com, an admin would configure the following rule:

SelectorOperatorValueAction
HostnameMatches Regex.*example.comDo Not Scan

When a Do Not Scan rule matches, nothing is scanned, regardless of file size or whether the file type is supported or not.

​​ Selectors

Gateway matches HTTP traffic against the following selectors, or criteria:

​​ Application

You can apply HTTP policies to a growing list of popular web applications. Refer to Application and app types for more information.

UI nameAPI example
Applicationany(app.ids[*] in {505}

​​ Content Categories

UI nameAPI example
Content Categoriesnot(any(http.request.uri.content_category[*] in {1}))

For more information, refer to our list of content categories.

​​ Destination Continent

The continent where the request is destined. Geolocation is determined from the target IP address. To specify a continent, enter its two-letter code into the Value field:

  • AF – Africa
  • AN – Antarctica
  • AS – Asia
  • EU – Europe
  • NA – North America
  • OC – Oceania
  • SA – South America
  • T1 – Tor network
UI nameAPI example
Destination Continent IP Geolocationhttp..dst_ip.geo.continent == "EU"

​​ Destination Country

The country that the request is destined for. Geolocation is determined from the target IP address. To specify a country, enter its ISO 3166-1 Alpha 2 code in the Value field.

UI nameAPI example
Destination Country IP Geolocationhttp.dst_ip.geo.country == "RU"

​​ Destination IP

UI nameAPI example
Destination IPhttp.dst.ip == "10.0.0.0/8"

​​ Domain

Use this selector to match against a domain and all subdomains — for example, if you want to block example.com and subdomains such as www.example.com.

UI nameAPI example
Domainany(http.request.domains[*] == "example.com")

​​ Download and Upload Mime Type

These selectors depend on the Content-Type header being present in the request (for uploads) or response (for downloads).

UI nameAPI example
Download Mime Typehttp.download.mime == "image/png\"
UI nameAPI example
Upload Mime Typehttp.upload.mime == "image/png\"

​​ DLP Profile

Scans HTTP traffic for the presence of social security numbers and other PII. You must configure the DLP Profile before you can use this selector in your policy. For more information, refer to our DLP Profile documentation.

​​ Host

Use this selector to match only the hostname specified — for example, if you want to block test.example.com but not example.com or www.test.example.com.

UI nameAPI example
Hosthttp.request.host == "test.example.com"

​​ HTTP Method

UI nameAPI example
HTTP Methodhttp.request.method == "GET"

​​ HTTP Response

UI nameAPI example
URLhttp.response.status_code == "200"

​​ Device Posture

With the Device Posture selector, admins can use signals from end-user devices to secure access to their internal and external resources. For example, a security admin can choose to limit all access to internal applications based on whether specific software is installed on a device and/or if the device or software are configured in a particular way.

UI nameAPI example
Passed Device Posture Checksany(device_posture.checks.failed[*] in {"1308749e-fcfb-4ebc-b051-fe022b632644"}), any(device_posture.checks.passed[*] in {"1308749e-fcfb-4ebc-b051-fe022b632644"})"

​​ Security Risks

UI nameAPI example
Security Risksany(http.request.uri.category[*] in {1})

For more information, refer to our list of security categories.

​​ Source Continent

The continent of the user making the request.

Geolocation is determined from the device’s public IP address (typically assigned by the user’s ISP). To specify a continent, enter its two-letter code into the Value field:

  • AF – Africa
  • AN – Antarctica
  • AS – Asia
  • EU – Europe
  • NA – North America
  • OC – Oceania
  • SA – South America
  • T1 – Tor network
UI nameAPI example
Source Continent IP Geolocationhttp.src_ip.geo.continent == "North America"

​​ Source Country

The country of the user making the request.

Geolocation is determined from the device’s public IP address (typically assigned by the user’s ISP). To specify a country, enter its ISO 3166-1 Alpha 2 code in the Value field.

UI nameAPI example
Source Country IP Geolocationhttp.src_ip.geo.country == "RU"

​​ Source IP

UI nameAPI example
Source IPhttp.src.ip == "10.0.0.0/8"

​​ URL

UI nameAPI example
URLnot(any(http.request.uri.content_category[*] in {1}))

​​ URL Path

UI nameAPI example
URL Pathhttp.request.uri.path == \"/foo/bar\"

​​ URL Path and Query

UI nameAPI example
URL Path and Queryhttp.request.uri.path_and_query == \"/foo/bar?ab%242=%2A342\"

​​ URL Query

UI nameAPI example
URL Querynot(http.request.uri in $%s)

​​ Users

The User, User Group, and SAML Attributes selectors require Gateway with WARP mode to be enabled in the Zero Trust WARP client, and the user to be enrolled in the organization via the WARP client. For more information on identity-based selectors, refer to the Identity-based policies page.

​​ Operators

Operators are the way Gateway matches traffic to a selector. When you choose a Selector in the dashboard policy builder, the Operator dropdown menu will display the available options for that selector.

OperatorMeaning
isequals the defined value
is notdoes not equal the defined value
inmatches at least one of the defined values
not indoes not match any of the defined values
in listin a pre-defined list of values
not in listnot in a pre-defined list of values
matches regexregex evaluates to true
does not match regexregex evaluates to false
greater thanexceeds the defined number
greater than or equal toexceeds or equals the defined number
less thanbelow the defined number
less than or equal tobelow or equals the defined number

​​ Value

You can input a single value or use regular expressions to specify a range of values.

Gateway uses Rust to evaluate regular expressions. The Rust implementation is slightly different than regex libraries used elsewhere. For more information, refer to our guide for Using wildcards in subdomains and paths.

For example, if you want to match multiple domains, you could use the pipe symbol (|) as an OR operator. In Gateway, you do not need to use an escape character (\) before the pipe symbol. The following configuration blocks requests to two hosts if either appears in a request header:

SelectorOperatorValueAction
HostMatches regex`.*whispersystems.org.*signal.org`

To evaluate if your regex matches, you can use Rustexp.