Filter
Top Products
DMZ Firewall Solution for the Express Router
07-12-99 Version 1.0 12
Filter Function Settings
Scr. address type: Host
Src. address: <LAN1 IP address>
Src. port : All
9
Discards all ICMP packets entering the
DMZ network. This prevents the router
from reporting the IP netmask.
Action: Discard
Protocol: ICMP
Dest. address type: All
Scr. address type: All
10
Discards all packets to open router
ports.
Four filters are required.
Action: Discard
Protocol: UDP
Dest. address type: Host
Dest. address: <LAN1 IP address>
Dest. port: All
Src. address type: All
Src. port: All
11 Action: Discard
Protocol: UDP
Dest. address type: Host
Dest. address: <LAN2 IP address>
Dest. port: All
Src. address type: All
Src. port: All
12 Action: Discard
Protocol: TCP
Flags: All
Dest. address type: Host
Dest. address: <LAN1 IP address>
Dest. port: All
Src. address type: All
Src. port: All
13 Action: Discard
Protocol: TCP
flags: All
Dest. address type: Host
Dest. address: <LAN2 IP address>
Dest. port: All
Src. address type: All
Src. port: All
3.3.2.2 Transmit (Tx) filters on LAN2
To pass all packets transmitted from the DMZ, set the default action to Pass.