High Level Virus Protection For Incoming Connections; Medium Level Virus Protection For Incoming Connections - D-Link DFL-500 User Manual

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SMTP, to prevent users on your internal network from sending email attachments that contain viruses to
addresses on the Internet
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POP3, if you allow users on the Internet to connect to a POP3 server on your internal network
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IMAP, if you allow users on the Internet to connect to an IMAP server on your internal network
Even though viruses are distributed from your internal network by being uploaded through your firewall, an
incoming connection to a server on your internal network must first be started. It is this incoming connection
that triggers DFL-500 incoming virus protection.
This section describes:
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High level virus protection for incoming connections

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Medium level virus protection for incoming connections

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Low level virus protection for incoming connections
High level virus protection for incoming connections
High level protection removes target files in web transfers and in email attachments before they pass through
the firewall.
You can switch on high level data protection separately for the HTTP, SMTP, POP3, and IMAP content
protocols. For each content type, you can also select target file types to be removed. The virus scanner
replaces deleted files with an alert message that is forwarded to the external user.
To configure high level virus protection to prevent the distribution of viruses from your internal network:
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Go to Anti-Virus > HTTP > Incoming.
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Click High to block files from being downloaded from your web server to users on the Internet.
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Click Detail and select the types of files to block.
Configure high level HTTP virus protection if you have an Internet web server on your internal network
and you want to prevent users on the Internet from downloading attachments that may contain viruses.
By default .exe, .com, and .bat files are blocked. In addition, you can
block .vbs, .zip, .tar, .hta, .gzip, .rar, .scr, .dll, and MS Office files.
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Click OK and click Apply.
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Go to Anti-Virus > SMTP > Incoming and repeat steps
from your web server to users on the Internet.
protection to block email attachments in SMTP traffic.
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Go to Anti-Virus > POP3 > Incoming and repeat steps
from your web server to users on the Internet.
protection to block email attachments in POP3 traffic.
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Go to Anti-Virus > IMAP > Incoming and repeat steps
from your web server to users on the Internet.
protection to block the downloading of email attachments in IMAP traffic.
When the DFL-500 blocks a file, the user who requested the file receives the following message:
High Security Alert!!! You are not allowed to download this type of file .
Medium level virus protection for incoming connections
Medium level protection scans all target files for viruses. You can configure the DFL-500 to scan target files
for virus signatures and macro viruses.
If a virus is found in a file, the virus scanner deletes the file and replaces it with an alert message that is
forwarded to the user. If a virus is not found, the file is forwarded unchanged to the user.
DFL-500 User's Manual
Click High to block files from being downloaded
to Click OK and click Apply.
Click High to block files from being downloaded
to Click OK and click Apply.
Click High to block files from being downloaded
to Click OK and click Apply.
to configure high level virus
to configure high level virus
to configure high level virus
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