Configuring Proxies (SAP Library - Internet Communication Framework)

Configuring Proxies

Use

If you use the SAP Web Application Server as an HTTP client, you can determine a proxy that is used for outgoing HTTP requests.

A proxy server is used as a security barrier between the internal network (intranet) and the Internet, by preventing other persons on the Internet from having access to the confidential information in the intranet.

Procedure

The following describes how you can configure a proxy server in Transaction SICF. You can also make the configuration in your client ABAP program when you generate the client object. You can find an example of this in Sample Program.

Enter Transaction code SICF (see also Creating an ICF Service) or choose Administration ® System Administration ® Administration ® Network ® Maintain the HTTP Service Tree.

Choose Goto ® HTTP Client Proxy.

The following screen appears:

This graphic is explained in the accompanying text

Here you can configure the proxy server that should be used.

Use the Proxy setting is active checkbox to determine whether the connection to the Internet should be made via a proxy server using the configuration that you have determined here.
If you activate No proxy setting for local servers, you determine that the proxy server should be used for all local (intranet) addresses. Those servers with hostnames that do not contain any domains, such as PC01 instead of PC01.sap.com, count as local servers.

Note

Since a proxy server works as a security barrier between the internal network (intranet) and the Internet, you may require special authorization from the system administrator to access websites with the proxy server. It may be easier and faster to access local addresses if you do not use the proxy server.

You can use the field Authorization as follows: When you enter a text (such as 'CHECK') in this field, when you use the global proxy setting the system checks the user’s authorization for this value. The authorization object used is S_ICF. In this example, the user must have the following authorization: S_ICF-ICF_FIELD = 'PROXY' and S_ICF-ICF_VALUE = 'CHECK'. If the user does not have this authorization, the settings that were maintained are not evaluated for the HTTP request.
In No Proxy for the Following Addresses, you can maintain the Web addresses (host names) that should not be accessed using the proxy server. If you want to connect to a server in the intranet, ensure that its address is entered here. If, for example, the server is called PC01, enter PC01 in the field.

Note

You can use placeholders to assign domain and host names, such as www.*.com; *x* and so on.

The ABAP language element "CP" compares addresses to assess individual entries for the use of the proxy setting.

The individual entries must be closed by a semi colon (;).

Furthermore, for the HTTP and HTTPS protocols, you can store the host name and the proxy server port, as well as users and passwords for logging onto the proxy server.

Caution

Ensure that the proxy settings are not transported!