Security - Samsung OfficeServ 7400 General Description Manual

4.2.3 Security

NAT/PT (In/Out/Exclusive/Redirect)
The security function supports the conversion function between the private IP address and
public IP address in the network where security is required.
The Inbound, Outbound, Exclusive, and Redirect functions are supported.
Inbound: Performs the forwarding process for the packet flowing from the WAN to the
IP and port of the LAN specified in the NAT/PT conversion table.
Outbound: Converts the IP address of the transmitter into the global IP address accord-
ing to the NAT/PT conversion table for transmitting the packet from the LAN to the
WAN.
− Exclusive: Used for the IP address that is not applied by the NAT/PT conversion.
− Redirect: When the Domain Name Server (DNS) server IP in the data server man-
agement sector is changed, each IP terminal uses the pre-DNS IP and this function
changes the DNS IP by registering the post-DNS IP into the Redirect table
Firewall
Access filtering
Prevents access to disallowed IP addresses to control access for the resource non-
disclosed to the outside and to control the external resource which the membership in
the LAN may access.
DMZ function
Used for connecting the web server and mail server (which are firewall-protected LAN
networks but need to be freely accessed from the outside) to the subnet separated from
the LAN network where firewall blocking is not applied. In this way, access from the
outside can be smoother with the access control service through the firewall.
Port Forwarding
This function is similar to the DMZ function but is used for connecting to a specific
network without a separately divided DMZ port. It is used for the extra network ser-
vices as well as the DMZ function. The extra network is configured for a party outside
of the office to access the Intranet in the office through the Internet. In this network,
security on the Intranet is paramount.
© Samsung Business Communications
OfficeServ 7400 General Description
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