Prestige 201 ISDN Access 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 Matched | Check Next Rule | |
| Check Next Rule | |
Drop | Forward | |
Drop Packet | Check Next Rule |
Action Not Matched
Drop Forward
Accept Packet
Figure 6-8 Executing an IP Filter
Filter Configuration |
