User guide

36
4.2.1.2 IMAP, IMAPS scanner
The Internet Message Access Protocol (IMAP) is another Internet protocol for email retrieval. IMAP has some
advantages over POP3, e.g., multiple clients can simultaneously connect to the same mailbox and maintain message
state information such as whether or not the message has been read, replied to or deleted. ESET NOD32 Antivirus
provides protection for this protocol regardless of the email client used.
The protection module providing this control is automatically initiated at system startup and is then active in memory.
IMAP protocol control is performed automatically without the need to reconfigure the email client. By default, all
communication on port 143 is scanned, but other communication ports can be added if necessary. Multiple port
numbers must be delimited by a comma.
Encrypted communication will be not scanned. To enable the scanning of encrypted communication and view the
scanner setup, navigate to SSL protocol checking in Advanced setup section, click Web and email > Protocol filtering
> SSL and enable the Always scan SSL protocol option.
4.2.1.3 POP3, POP3S filter
The POP3 protocol is the most widespread protocol used to receive email communication in an email client application.
ESET NOD32 Antivirus provides protection for this protocol regardless of the email client used.
The protection module providing this control is automatically initiated at system startup and is then active in memory.
For the module to work correctly, please make sure it is enabled – POP3 protocol checking is performed automatically
without requiring re-configuration of the email client. By default, all communication on port 110 is scanned, but other
communication ports can be added if necessary. Multiple port numbers must be delimited by a comma.
Encrypted communication will be not scanned. To enable the scanning of encrypted communication and view the
scanner setup, navigate to SSL protocol checking in Advanced setup section, click Web and email > Protocol filtering
> SSL and enable the Always scan SSL protocol option.
In this section, you can configure POP3 and POP3S protocol checking.
Enable POP3 protocol checking – If enabled, all traffic through POP3 is monitored for malicious software.
Ports used by POP3 protocol – A list of ports used by the POP3 protocol (110 by default).
ESET NOD32 Antivirus also supports POP3S protocol checking. This type of communication uses an encrypted channel
to transfer information between server and client. ESET NOD32 Antivirus checks communications utilizing the SSL
(Secure Socket Layer), and TLS (Transport Layer Security) encryption methods.
Do not use POP3S checking – Encrypted communication will not be checked.