SETUP
Page 42
DOC_DEV_Router setup guide_A
IN
OUT
Service in
Device out
Service out
102
192.168.0.15
102
502
192.168.0.16
502
80
192.168.0.17
80
9.2.2
Set-up
To set-up a portforwarding rule,
•
Select > Network> Routing > Port forwarding menu,
•
Click the Add button,
•
Enter the characteristics of the frames which must be forwarded :
Source IP address,
Port number (destination)
•
Enter the characteristics of the device to which that IP frames must be forwarded.
Destination IP address
Port number (destination)
9.3
Advanced NAT
9.3.1
Overview
The advanced NAT function consists in modifying the source or destination IP addresses and port number of
the frames received by the Router on its LAN or WAN interface.
It applies to all the frames received by the Router on any of its two interfaces except to the IP packets
contained in a remote user connections.
One brings out
the DNAT function which consists in replacing the destination port and IP address.
the SNAT function which consists in replacing the source IP address.
Because the DNAT and SNAT functions modify the IP addresses of the IP packets processed by the RAS-3G
router, and because the firewall filters that frames, it is very important to understand in which order that
different functions are carried out.
Direction
WAN to LAN
LAN to WAN
D
N
A
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F
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L
A
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S
N
A
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D
N
A
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W
A
N F
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Summary of Contents for RAS Series
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