Using Norton Antivirus (NAV) with POPFile

Norton Antivirus works as a transparent email proxy. That is, it passes along requests from your email client to your email server.

To use POPFile and NAV together, do the following:

NAV should opperate between your email server (e.g. pop.your_isp.com) and POPFile like so:

Email client –> POPFile –>NAV–> Email server
POP port 123 –> 123 –> 110 –> 110
Note 123 is our recommendation (automatically<br>set) Standard

This allows NAV to check for viruses before they reach POPFile or your mail client.

Instructions

  • Note that before installing POPFile, the mail client contains the following entries:
    pop3 server: pop.isp.net
    username: user
    • where pop.isp.net is your mail server, user is your login name.
    • Generally the port for the mail server is specified elsewhere in your mail client and 110 is the most common setting.
  • NAV will pass along requests from your mail client to pop.isp.net at port 110. As a transparent proxy, NAV can intercept incomong or outgoing communication with email server to check for virus threats depending on how you choose to configure NAV. Checking both incoming and outgoing traffic is the recommended default setting. NAV uses NAVAPW32.EXE to filter POP3 and SMTP traffic to mail servers to scan them for viruses.
  • Install POPFile ( Windows instllations)
  • Using http://127.0.0.1:8080/configuration, set the POPFile listen port to 123 leave the POP3 host:port:user separator character as a colon :.
  • Change the mail client's setup as follows:
    pop3 server: 127.0.0.1
    username: pop.isp.net:110:user
    pop3 port: 123
  • The above setup tells the mail client to contact POPFile on IP address 127.0.0.1 and port 123.
  • POPFile will examine the username and strip off the left side of the username (where the : is the division point), and use that to contact the virus scanner on 127.0.0.1 port 110, and pass the rest to the virus scanner as the username. If your email server requires an unusual port for receiving email, you can replace 110 with the appropriate port.
  • Just like it did before POPFile was installed, NAV will use the email username to contact the real mail server on port 110.

Note: If you use 110 in POPFile and in your email, NAV will scan every email twice (once at POPFile's request and once by your email client's request). This won't harm anything, but it will be slower, take more memory, and offer you no advantage whatsoever.

See also:

 
howtos/norton_antivirus.txt · Last modified: 2008/02/08 19:49 (external edit)

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