NonStop System Glossary

SE
System engineer. See service provider.
searchList
For each loadfile, a list that is constructed and used by the linker and loader to tell them which
libraries to examine, and in which order, to locate symbol definitions needed by that loadfile. The
linker and loader construct the loadfile’s searchList in accordance with that loadfile’s import control,
which is set at link time by the loadfile’s programmer. A loadfile’s searchList is unaffected by the
import control of any other loadfile.
SEB
See ServerNet expansion board (SEB).
SEB port
On the NonStop S-series server, a connector on ServerNet expansion boards (SEBs) used for
ServerNet links. An SEB has six emitter-coupled logic (ECL)-based ServerNet ports. See also MSEB
port.
security association (SA)
A secure relationship defined between a network sender and receiver that establishes agreed-upon
security algorithms, transforms and parameters. Secure associations are stored in a security
association database. See also authentication header (AH), encapsulating security payload (ESP)
and security association database (SAD).
security association database (SAD)
A repository of security associations between network senders and receivers used in IP security
protocol processing. A security association entry in the SAD is uniquely identified by a triplet
consisting of a security parameter index (SPI), an IP destination address, and a security protocol
(AH or ESP) identifier. See also security parameter index (SPI), authentication header (AH) and
encapsulating security payload (ESP).
Security Manager Process (SMP)
A component of the Safeguard subsystem that manages all changes to the subject and object
databases and authenticates user logon attempts.
security parameter index (SPI)
A security association (SA) identifier stored in the security association database (SAD). It is
transmitted inside both the AH and ESP headers and is used to choose the right SA to be applied
for decrypting or authenticating packets or both. See also security association database (SAD),
authentication header (AH) and encapsulating security payload (ESP).
security policy (SP)
Admission rules used in the IP security protocols. See also security policy database (SPD).
security policy database (SPD)
A repository for security requirements defined at each node and used to verify and decide upon
incoming and outgoing traffic flow. See also security policy (SP).
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