Protecting your network against malicious email attachments

Grayware is commonly delivered by email or the web. The Example.com corporation has been the victim of multiple greyware infections in the past. Now that the company has a FortiGate unit protecting its network, you (Example.com’s system administrator) can configure the unit to scan email and web traffic to filter out greyware attachments.

Enabling antivirus scanning in the antivirus profile

The primary means to avoid viruses is to configure the FortiGate unit to scan email and web traffic for virus signatures. You enable virus scanning in the antivirus profile and then select the antivirus profile in firewall policies that control email traffic.

To enable antivirus scanning in the antivirus profile

1. Go to Security Profiles > AntiVirus > Profiles.
2. Create a new or edit an antivirus profile.
3. Select Virus Scan and Removal for HTTP to scan web traffic for viruses.
4. Select the Virus Scan check box for IMAP, POP3, and SMTP to scan all email protocols for viruses.
5. Select OK or Apply to save the antivirus profile.

Selecting the antivirus profile in a security policy

An antivirus profile directs the FortiGate unit to scan network traffic only when it is selected in a security policy. When an antivirus profile is selected in a security policy, its settings are applied to all the traffic the security policy handles.

To select the antivirus profile in a security policy

1. Go to Policy > Policy > Policy.
2. Create or edit a policy that controls the network traffic controlling email traffic.
3. Turn on Antivirus.
4. Select an antivirus profile.
5. Select OK to save the security policy.