IPL ROUTER SET-UP
Page 64
Setup Guide 9023409-01
Ethernet ADSL Cellular Routeur Firewall
Firewall set-up
17.1
Overview
The firewall filters IP frames between the LAN interface on one hand and
•
the WAN interface,
•
or transmitted inside a VPN,
•
or transmitted inside a remote user connection,
on the other hand.
The
It consists of three parts :
•
The « deny of service » filter
That filter is active on the WAN interface only and protects against the Internet attacks.
It cannot be set-up.
•
The main filter
The main filter is in charge of filtering IP frames between the LAN interface on one hand, and on the other
hand, the WAN interface, or a VPN; see the drawing above.
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 remote users filter
The remote user filter filters the IP frames according to the identity or the remote user (Login & PWD).
Access rights to the devices of the LAN network are assigned to each user according to his identity.
