D-Link DFL-1600 User Manual page 173

Network security firewall

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In this scenario, shown in Figure 18.2, a D-Link ﬁrewall is protecting a

workstation that will connect to FTP servers on the internet. To make it

possible to connect to these servers from the internal network using the

FTP ALG, the FTP ALG and ﬁrewall rules should be conﬁgured as follows:

Application Layer Gateways

Enter a descriptive name for the ALG.

Name: ftp-outbound

Uncheck Allow client to use active mode (unsafe for client).

Check Allow server to use passive mode (unsafe for server)

Then click OK.

Protecting FTP Clients

Figure 18.2: FTP ALG Scenario 2

D-Link Firewalls User's Guide