Chapter 3 – Using the Web Management Software
Multi-Tech Systems, Inc. MultiModem rCell User Guide
42
To (Host/Networks):
Enter the network/host to which the packet must send for the filter rule to match. The
Any option, which matches all IP addresses regardless of whether they are officially
assigned addresses or private addresses, may also be entered. The network/host must
be pre-defined in the Networks section.
Action:
Enter the action that the packet filter executes if the rule matches any traffic traversing
the firewall. Types of actions defined are:
Accept:
Allows/accepts all packets that match this rule.
Reject:
Blocks all packets matching this rule. Notifies the host that the packet was
rejected.
Drop:
Blocks all packets matching this rule, but dose not notify the host. This is a
silent drop.
Log:
Logs packets matching the rule; for example, the corresponding source
address, destination address, and service.
When you click
Add
, the packet filter rule displays at the bottom of the screen.
Packet Filters > DNAT Configuration
Destination Network Address Translation (DNAT) is a process that allows the placing of servers within the
protected network and making them available for a certain service to the outside world. The DNAT process
running on the router translates the destination address of incoming packets to the address of the real network
server on the LAN. The packets are then forwarded.
You can Delete or Edit a DNAT rule after it has been defined and added by using the table at the bottom of the
screen.
Note:
When adding rules, at least one host must be defined in the Network Configuration section.
DNAT Configuration
Allow Access:
Select a network or host to which IP packets will be allowed and re-routed. The
network/host must be pre-defined in the Network Configuration section.
External Service:
Select the External Service that you want allowed. The service must be defined in the
Service Configuration section.
LAN IP:
Select the LAN IP to which the packets are to be diverted. Only one host can be defined
as the destination.
Internal Service:
Select the Internal Service to be the destination.
Internal Source:
Select the source address for packets that are going to be sent. If you do not want to
change the address, select
NOCHANGE
.
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