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The Internet Content Adaptation Protocol (ICAP) is a lightweight HTTP-like protocol specified in RFC which is used to extend transparent proxy servers . ICAP Errata: collection of RFC bugs. ICAP Partial Content Extension (html version) (Note to implementers: Please provide additional feedback to this. The ICAP server has a service running in Request Modification Mode (see section running in Response Modification Mode (see section of RFC ).

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If this number is higher than the number configured in this field, it ends a child process. Third party gateway or proxy.

Client requests for download files from the file server will go through the proxy, and it may decide to send the requested file to the icap server for analysis prior to forwarding them back to the client. The origin server responds to the request. The ICAP server can then send back a modified version of the request. In the Threat Prevention default profiles basic, optimized and strictThreat Emulation is set to Background mode.

Internet Content Adaptation Protocol

In Generaldo not select a protocol. By using our site, you acknowledge that you have ciap and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The following occurs if Step 3 returned a rgc The ICAP client can then perform the modified request by contacting an origin server, or pipeline the modified request to another ICAP server for further modification. Here’s the exact definition:. The surrogate sends the reply, possibly modified from the original origin server’s reply, to the client. How to configure squid server to support icap error service overloaded Ask Question.

The ICAP client sends the verdict to the client. Start a new child process if the number of available threads is less than [x] – This option allows dynamic growth and lets you configure the number of new threads as needed. A connection must be established between the ICAP server and client. From Wikipedia, the free encyclopedia.


Internet protocols Application layer protocols.

ICAP, Internet Content Adaptation Protocol

You can create a new profile and change the mode to Hold modeand apply the profile to the relevant gateways. The new service now appears in the drop-down Service list. Continue after ICAP preview. Affected Products VirusScan Enterprise 8. This is an ICAP proxy error.

End a child process if the number of available threads is more than [x] – This option allows dynamic reduction of the number of threads as needed. This frees up resources and standardizes the way in which new features are implemented.

RFC Internet Content Adaptation Protocol (ICAP)

Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. This page was last edited on 2 Decemberat For than reason, icap RFC defined response to notify the squid to retry file scanning, since it’s temporally overloaded. The maximum allowed number of server processes is configured on the gateway. The ICAP client implements the action, like deny access, or delete the file.

Solution Compatibility testing stages: The server executes its transformation service on messages and sends back responses to the client, usually with modified messages. Off-loading value-added services from web servers to ICAP servers allows those same web servers to be scaled according to raw HTTP throughput versus having to handle these extra tasks.

Retrieved from ” https: These ICAP servers are focused on a specific function, for example, ad insertion, virus scanning, content translation, language translation, or content filtering.


At the core of this process is a cache that will proxy all client transactions and will process them through web servers. Check Point devices can work with third party devices without changing the network topology. Background mode means that connections are allowed until emulation is complete.

Any additional functionality, such as MD5 hash, URL reputation, and signature-based protection, is not supported. Stack Overflow works best with JavaScript enabled. By using this site, you agree to the Terms of Use and Privacy Policy. For more information and updates, see sk For a detailed explanation on the advanced service features, check the online help. The maximum allowed number of server processes multiplied by The number of threads per a child process is the number of maximum concurrent connections that the ICAP server can handle.

ICAP version is not supported by server. The gateway object window opens. Articles lacking in-text citations from October All articles lacking in-text citations Pages using RFC magic links.

ICAP Server

Please help to improve this article by introducing more precise citations. Sends ica an HTTP response to the request. In ica, you can configure The number of threads per a child process. This article includes a list of referencesrelated reading or external linksbut its sources remain unclear because it lacks inline citations. The surrogate sends the request to the origin server. The minimum number of processes is 3. Views Read Edit View history.