Advanced Settings; Prerouting Rule - Multitech MultiConnect rCell 100 User Manual

SETTING UP THE FIREWALL
13. From the Protocol drop-down list, select the protocol of the messages that apply to this rule. Choose
from TCP/UDP, TCP, UDP, or ANY.
14. In the Chain field, select the grouping based on the type of traffic affected by the rule from the drop-
down menu. Select from INPUT, FORWARD, or OUTPUT.
15. In the Target field, select the desired action of the firewall based on this rule from the drop-down menu.
Choose from ACCEPT, REJECT, DROP, or LOG.
16. Click Submit.
17. To save your changes, click Save and Restart.

Advanced Settings

The Firewall's Advanced Settings mode lets you manipulate DNAT, SNAT, and Filter rules directly. DNAT rules can
manipulate the destination address and port of a packet; similarly SNAT rules can manipulate the source address
and port of a packet.
Filter rules apply an ACCEPT, REJECT, DROP, or LOG action to a packet. A DNAT or SNAT rule with the same name
as a Forwarding rule will be associated under Normal Settings for Port Forwarding/NAT rules.
Adding Prerouting Rules
Adding Postrouting Rules

Prerouting Rule

Add a DNAT rule
To add prerouting or DNAT rule to your firewall:
1. Go to Firewall > Settings to display the Firewall window.
2. In the Prerouting Rules group, click Add DNAT Rule.
3. In the FilterRule dialog box, enter a name for the rule and optionally, a description.
4. In the Destination IP field, enter the destination IP address that applies to this rule.
5. In the Destination Port field, enter the destination port that applies to this rule. If there is a range of
ports, the ending port is automatically set.
6. In the Destination Mask field, enter the subnet mask of the destination that applies to this rules.
7. In the Destination Interface field, select the interface used by the destination that applies to this rule
from the drop-down menu. Select from ANY, LAN, WAN, CELLULAR, or WI-FI WAN.
8. In the Source IP field, enter the source IP address that applies to this rule.
9. In the Source Port field, enter the source port that applies to this rule.
10. In the SourceMask field, enter source subnet mask that applies to this rule.
11. In the SourceMAC field, enter the source MAC address for the device that applies to this rule.
12. In the SourceInterface field, select the source interface that applies to this rule from the drop-down
menu. Select from ANY, LAN, WAN, CELLULAR, or WI-FI WAN.
13. In the Protocol drop-down list, select the protocol of the messages that apply to this rule. Select from
TCP/UDP, TCP, UDP, or ANY.
14. In the NAT IP field, enter the public IP address for the Network Address Translation.
15. In the NAT Port field, enter the port used publicly for the Network Address Translation.
16. Check Enable NAT Loopback if you want to redirect LAN packets destined for the WAN's public IP
address.
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MultiConnect rCell 100 MTR-EV3 User Guide