Prestige 100L IDSL Router
Packet into IP Filter
Filter Active? | No |
|
|
Yes |
|
|
|
Apply SrcAddrMask |
|
|
|
to Src Addr |
|
|
|
Check Src | Not Matched |
|
|
IP Addr |
|
| |
|
|
| |
Matched |
|
|
|
Apply DestAddrMask |
|
| |
to Dest Addr |
|
|
|
Check Dest | Not Matched |
|
|
IP Addr |
|
| |
|
|
| |
Matched |
|
|
|
Check | Not Matched |
|
|
IP Protocol |
|
| |
|
|
| |
Matched |
|
|
|
Check Src & | Not Matched |
|
|
Dest Port |
|
| |
|
|
| |
Matched |
|
|
|
More? | Yes |
|
|
No |
| Action Not Matched | |
Action Matched | Check Next Rule |
|
|
| Check Next Rule | Drop | Forward |
Drop | Forward |
|
|
Drop Packet | Check Next Rule |
| Accept Packet |
Figure 6-4 Executing an IP Filter
Filters |