Telindus 1031, Руководство пользователя и справочник

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Telindus 1031 Router Chapter 9
User manual Configuration examples
163
9.4 Connecting a LAN to the Internet using NAT and PAT
This is an example of a local network that only uses private addresses.
A PPP link connects your site to the Internet Service Provider. At your site a Telindus 1031 Router is
installed. You only received 2 official IP addresses from the ISP, one for all outgoing traffic using PAT
(195.7.12.22) and one for accessing the local web server using NAT (195.7.12.21) with a dedicated pri-
vate address.
The configuration of the Telindus 1031 Router in CLI format is as follows:
Router
(+ modem)
modem
your site
ISP
Internet
IP subnet 192.168.47.0
mask 255.255.255.0
IP address WAN interface
= 195.7.12.254
Frame Relay or
PDH/SDH network
IP address WAN interface
= PAT address
= 195.7.12.22
IP address LAN interface
= 192.168.47.254
serial intf.
Web server with IP address
= 192.168.47.250
action "Load Default Configuration"
SET
{
SELECT lanInterface
{
LIST
{
ip =
{
address = 192.168.47.254
}
mode = routing
}
}
SELECT g703[1]
{
SELECT channel[g703_1]
{
LIST
{
encapsulation = ppp
}
SELECT ppp
{
LIST
{
ip =
{
address = 195.7.12.22
nat = default
}
}
}
}
} SELECT router
{
LIST
{
defaultRoute =
{
gateway = 195.7.12.254
}
}
SELECT defaultNat
{
LIST
{
patAddress = 195.7.12.22
addresses =
{
[a] =
{
officialAddress = 195.7.12.21
privateAddress = 192.168.47.250
}
}
}
}
}
}
action "Activate Configuration"