Motorola Router 6161252-00-01 ユーザーズマニュアル

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Security   10-35
FTP sessions. To allow WAN-originated FTP sessions to a LAN-based FTP ser ver with the IP address a.b.c.d 
(corresponding to a numbered IP address such as 163.176.8.243), inser t the following input filter ahead of the 
current input filter 1:
Enabled: Yes
For ward: Yes
Source IP Address: 0.0.0.0
Source IP Address Mask: 0.0.0.0
Dest. IP Address: a.b.c.d
Dest. IP Address Mask: 255.255.255.255
Protocol Type: TCP
Source Por t Comparison: No Compare
Source Por t ID: 0
Dest. Por t Comparison: Equal
Dest. Por t ID: 21
Note:
A similar filter could be used to permit Telnet or WWW access. Set the Dest. Por t ID to 23 for Telnet or 
to 80 for WWW.
Deleting a filter set does not delete the filters in that set. However, the filters in the deleted set are no longer in 
effect (unless they are par t of another set). The deleted set will no longer appear in the answer profile or any 
connection profiles to which it was added.
Policy-based Routing using Filtersets
Previous software versions routed IP packets only by destination IP address. Motorola Netopia® Embedded 
Software Version 8.7.4 now offers the ability to route IP packets using criteria other than the destination IP 
address. This is called policy-based routing. You are now able to route IP traffic based on the following:
source IP address
source and/or destination protocol field
source and/or destination por t numbers
TOS field
You specify the routing criteria and routing information by using IP filtersets to determine the for warding action 
of a par ticular filter.