Dial Out security features
Dial out is used by the Call Home feature to send service-related information from
the attached systems to the IBM service support system, RETAIN®; and to optionally
send a pager message to a customer-designated number. Dial out is available
through the TSSC and the modem. Dial out security properties for the Attached
Systems are as follows:
1. Dial-out is from the customer location to the IBM connection point. The IBM
service support system (RETAIN®) does not initiate connections to the attached
systems.
2. Dial out through the TSSC can either be over a modem connection or over an
outbound Ethernet connection to the customer network. All outbound traffic is
limited to HTTP, HTTPS, and DNS information. All service-related data is
communicated using HTTPS and is therefore encrypted.
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