15.5.1 SIF - Configuration example
Requirements
• Internet connection
• Your LAN must be connected to one of ports 1, 2, 3 or 4 on the gateway.
Example scenario
Configuration target
• Only certain Internet services are to be available for the staff of a company (HTTP, HT-
TPS, FTP, DNS).
• The gateway should operate as a DNS proxy, which means that the clients use the gate-
way as a DNS server.
• Only the system administrator and the director should be able to established an HTTP
and a Telnet connection to the gateway.
• The director must be able to use all services in the Internet..
• All other data traffic will be blocked.
Important
An incorrect configuration of the firewall can significantly disrupt the functionality of the
gateway or drop the connections.
The usual principle for firewalls also applies: Everything that is not explicitly allowed is
prohibited.
This means accurate planning of the filter rules and filter rule chain is necessary to en-
sure correct operation.
bintec elmeg GmbH
15 Firewall
bintec RS Series 433