Prestige 310 Broadband Sharing Gateway
7-14
Filter Configuration
Figure 7-12 Example Filter — Menu 21.6.1
Step 6.
Press
[ENTER]
to confirm and display the next screen. Note that there is only one filter rule in
this set.
Menu 21.6.1 - TCP/IP Filter Rule
Filter #: 6,1
Filter Type= TCP/IP Filter Rule
Active= Yes
IP Protocol= 6 IP Source Route= No
Destination: IP Addr= 0.0.0.0
IP Mask= 0.0.0.0
Port #= 21
Port # Comp= Equal
Source: IP Addr= 0.0.0.0
IP Mask= 0.0.0.0
Port #= 0
Port # Comp= None
TCP Estab= No
More= No Log= None
Action Matched= Drop
Action Not Matched= Check Next Rule
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
Press [SPACE BAR] to choose
this filter rule type. The first
filter rule type determines all
subsequent filter types within a
set.
Select
Yes
to make the rule
active.
6
is the TCP protocol.
The port number for FTP is
21
.
See
RFC 1060
for port numbers
of well-known services.
Select
Equal
here as we are
looking for
packets going to
port 21 only.
There are no
more rules to
check.
Select
Drop
here so that
the packet will be
dropped if its destination
is the telnet port.
Select
Check Next Rule
here
so that the next rule in this set
will be checked.
