ETIC 1230 Manual do Utilizador descarregar pdf (Página 71)

CONFIGURATION

Industrial router IPL-E User guide ref. 9015909-03 Page 71

18 Firewall

18.1 Overview

The firewall filters IP packets between the WAN and the LAN interface of

the IPL-E router. It is divided in 3 particular filters :

• The remote users filters

The function of the remote users filters is to limit the IP domain an

authenticated remote user can reach when he connects to the IPL-E

router through the Internet.

The remote users filters filter the destination IP address and port number

of the IP packets included inside a PPTP or TLS or L2TP remote user

connection.

Thus the IP addresses checked by the remote users filters are LAN IP

addresses.

25 remote users filters can be created and assigned individually to each of

the users declared in the user list.

The source IP address of the packets is not checked by the remote users

filters because the filters apply to the remote users connections according

the login and password of the remote user checked when the remote user

connection is set.

•

••

•

The main filter

It filters IP packets whether carried inside one of the VPNs or outside a

VPN.

The main filter checks source and destination IP addresses and the

source and destination ports.

The main filter does not check the IP packets included in a remote user

connection. That packets are checked by the remote users filter.

The main filter does not check the IP packets defined in the “Port forwarding” table. That

packed are directly forwarded to the defined device (see Port forwarding

• The deny of service filter is made to usual attacks coming from the

Internet. That filter cannot be configured.

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ETIC 1230 Manual do Utilizador Página 71