Each user is also assigned a number of privileges: “Get” is the ability to read files from the
WebNet (download), “Put” is the ability to write files (upload), “Delete” is the abilityto
delete files from the WebNet,“Mkdir” is the ability to create new directories on the WebNet
and “Rmdir” is the ability to remove directories on the WebNet. In Figure 10, the default
settings are shown.
4.2 Network Settings
The configuration form for the Network settings initially contains only a small number
of entries, but can be expanded to show all possible network settings. The example in
Figure 11 shows the full form, which is accessed by pressing the link “Click here to show
advanced settings”. For more elaborate explanations of the notions briefly described in this
section, please consult the TCP/IP networking literature (e.g. [1], [9]). Thelocal network
administrator should be able to provide the values for the different settings.
DHCP, RARP and AutoIP are ways to obtain networksettings automatically at b oot
time. Often, a DHCP server exists on the network, so probably this method of configuration
should be used.
It is configurable whether the automatically (from DHCP, e.g.) or the manually entered
configurations should be effective.
If automatic setup of network settings are used, the local network administrator should be
able to inform You whichIP address is assigned to the WebNet.
All network settings can be set manually:
IP address is the identification of the WebNet on the TCP/IP network. Be sure it is a
valid, vacantaddress, supplied by the network administrator.
Subnet mask specifies how much of the IP address describes the host address and how
much describes the network address, for routing purposes.
Default gateway is the IP address to forward packetsto, when their address is not within
the network described by the IP address / Subnet mask combination. The gateway will
know where to send them.
Domain is the name of the DNS domain that the WebNetb elongs to. Nameserver is the
IP address of a server in that domain, that does name/IP translations, aka. a DNS server.
For further reading about DNS, see [6].
Hostname is the DNS name of the WebNet. When the WebNet has been named, be sure
the name is inserted in the DNS server (the network administrator’s job). Timeserver is
the IP address of a server that runs a time-service, for setting of the clock in the WebNet.
SMTP server is the IP address of a server running mail server (SMTP, Simple Mail
TransferProtocol, see e.g. [4] for more information) software, for forwarding mails from the
WebNet to the proper recipient.
The PPP Protocol settings should be set if TCP/IP communication is done over a serial
device, e.g. a modem connected to the RS-232 port.
WebNet User’s Guide 19