Prestige 314 PLUS Broadband Sharing Gateway with 4-Port Switch

Packet

into IP Filter

Filter Active?

Yes

Apply SrcAddrMask

to Src Addr

Check Src

IP Addr

Matched

Apply DestAddrMask

to Dest Addr

Check Dest

IP Addr

Matched

Check

IP Protocol

Matched

Check Src &

Dest Port

Matched

More?

No

Action Matched

No

Not Matched

Not Matched

Not Matched

Not Matched

Yes

Action Not Matched

Check Next Rule

Check Next Rule

 

Drop

Forward

DropForward

Drop Packet

Check Next Rule

Accept Packet

Figure 7-9 Executing an IP Filter

Filter Configuration

7-11