Host name with certificateThis parameter is only relevant if you have configured communicationwith certificates ( wdisp/ssl_auth> ).If this parameter is then not set, you must issue a servercertificate for each application server in the corresponding hostname. You can use this parameter to specify a host in the name ofwhich the server certificate is issued. You do not then need toissues a certificate for each application server.
ExampleYour server certificate is issued in the name "www.sap.com".You activate this certificate for all application servers intransaction STRUST. You also set the value of wdisp/ssl_certhostto www.sap.com .If you do not set this parameter, the host name at the messageserver (smlg) and the name in which the certificates are issuedmust match.
SAP Web Dispatcher
Who is allowed
Limitation for os
Limitation for db