Server User Manual

Serial Port Profiles
160 IOLAN SDS/SCS/STS/MDC User’s Guide, Version 4.0
Authentication
Timeout
The timeout, in minutes, during which successful PAP or CHAP authentication
must take place (when
PAP or CHAP are specified). If the timer expires before
the remote end has been authenticated successfully, the link will be terminated.
Range: 1-255
Default: 1 minute
Roaming Callback A user can enter a telephone number that the IOLAN will use to callback
him/her. This feature is particularly useful for a mobile user. Roaming callback
can only work when the
User Enable Callback parameter is enabled. Enable
Roaming Callback
therefore overrides (fixed) User Enable Callback.To use
Enable Roaming Callback, the remote end must be a Microsoft Windows OS
that supports Microsoft’s Callback Control Protocol (CBCP). The user is
allowed 30 seconds to enter a telephone number after which the IOLAN ends
the call.
Default: Disabled
Challenge Interval The interval, in minutes, for which the IOLAN will issue a CHAP re-challenge
to the remote end. During CHAP authentication, an initial CHAP challenge
takes place, and is unrelated to CHAP re-challenges. The initial challenge takes
place even if re-challenges are disabled. Some PPP client software does not
work with CHAP re-challenges, so you might want to leave the parameter
disabled in the IOLAN.
Range: 0-255
Default: 0 (zero), meaning CHAP re-challenge is disabled
Address/Control
Compression
This determines whether compression of the PPP Address and Control fields
take place on the link. For most applications this should be enabled.
Default: Enabled
Protocol
Compression
This determines whether compression of the PPP Protocol field takes place on
this link.
Default: Enabled
VJ Compression When enabled, Van Jacobson Compression is used on this link. If your user is
authenticated by the IOLAN, this VJ compression value will be overridden if
you have enabled the
User, Enable VJ Compression parameter. If the user is
authenticated by RADIUS and the RADIUS parameter Framed-Compression
is set in the RADIUS file, the IOLAN will use the value in the RADIUS file in
preference to the value configured here.
Default: Enabled
Magic Negotiation Determines if a line is looping back. If enabled (On), random numbers are sent
on the link. The random numbers should be different, unless the link loops
back.
Default: Disabled
IP Address
Negotiation
Specifies whether or not IP address negotiation will take place. IP address
negotiation is where the IOLAN allows the remote end to specify its IP
address. When
On, the IP address specified by the remote end will be used in
preference to the
Remote IP Address set for a Serial Port. When Off, the
Remote IP Address set for the Serial Port will be used.
Default: Disabled