F-Secure Internet Gatekeeper for Linux/Administrator’s Guide
108
10.2.1
Transparent Proxy Details
Normally, clients access web servers and mail servers directly.
To use F-Secure Internet Gatekeeper for Linux as a transparent proxy, you must install it on the IP
routing between clients and servers.
The product relays the access and performs a virus scan during the relay by capturing connections
from clients to servers and by creating another connection to servers. In this way, clients can directly
access servers, and clients’ traffic is scanned, without having to change the client configuration.
Setting Example
Without virus scanning
With virus scanning / Transparent proxy
WEB server
M ail server
WEB server
M ail server
WEB server
M ail server
WEB server
M ail server
Internet
Gatekeeper
Client
Client