Nokia A032 User Manual page 64

Note: You should
normally set NetBios
to Reject. Windows
programs often issue
NetBios server
requests which may
cause spurious dial-up
connections to be
made.
58
Set port filters
By default, all IP frames which are addressed
off the local network will be passed by the
A032 to the Internet. If a connection is not
available, a dial-up procedure will be initiated.
Sometimes you might want to disable certain
Internet applications or prevent unwanted
dialing by filtering out some port numbers. The
Port Filters allow you to select which types of
frames will be forwarded:
For entries set to
sent to the listed ports (at an external IP
address) will cause a dial-up connection to be
established and will be forwarded to the
network.
For entries set to
Reject
type will be ignored.
Note that DNS will normally need to be enabled
in order for network names to be used. This
means that even if WWW is disabled, a user
trying to browse a site will cause a dial event
due to a DNS access by their browser, even
though they will not subsequently be able to
access the site.
, TCP and UDP frames
Accept
, frames sent to that port
Nokia A032 Advanced User Guide