Guralp Systems CD1.1 - Manual (Page 41)

Operator's Guide
set this to something which describes the function of this
particular instance. In most cases, this can be left at the
default setting.
The Enable check-box controls whether this instance is to be
automatically started each time the system boots or whether it
should be left to be started manually.
The Delete check-box, if ticked, will cause this instance to be
deleted when the form is submitted.
The Station name field identifies this sender instance to
communicating Data Consumers (DCs), according to the CD1.1
protocol. This name should be unique and is normally set using
the system's hostname.. The station name field is also used as
the “frame creator” for frameset naming.
The Station type drop-down menu is also used to identify the
sender in connection request frames. It can be set to “IMS
(international monitoring system)”, “NDC (national data
centre)” or “IDC (international data centre)”.
The Data consumer well-known address field should be
populated with the I.P. address or DNS name of the DC
(receiver) to which frames should be sent. If a name is used, it
is first looked up in the standard Linux /etc/hosts file; if no
match is found, the configured DNS server is queried.
The Data consumer well-known port field should be
populated with the port (service) number or name to which
frames should be sent at the DC. If a name is used, it is looked
up in the standard Linux /etc/services file.
Note that these two fields only specify the “well-known DC
address”; as part of the connection establishment, the
receiving system will redirect the sender to another
port/address. The redirection will be logged via the configured
logging mechanism (syslog or file).
The Spyrus card used for checking signatures can store
nineteen different key-pairs and the Spyrus card slot drop-
down menu selects which is to be used. If the sender should
not sign packets, this can be left set to “disabled”.
The Authentication key ID field sets a flag in the CD1.1
header which some customers use to identify which encryption
key pair (from a pre-defined set) has been used. It is generally
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