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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: Goner on December 31, 2004, 11:32:42 AM

Title: Mail-scanner also scans non-standard ports ?
Post by: Goner on December 31, 2004, 11:32:42 AM
just noticed that Avast also scans mail from other PC's on the LAN that are sending/receiving thru a proxy-program on the server running Avast ... the proxy does not use ports 25 & 110, but 8025 & 8110.

is that the new 'transparent' scanner at work ??
(btw ; i know i can use Avast itself as a mail proxy, looking into that too)
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: Lisandro on December 31, 2004, 12:06:48 PM
just noticed that Avast also scans mail from other PC's on the LAN that are sending/receiving thru a proxy-program on the server running Avast ... the proxy does not use ports 25 & 110, but 8025 & 8110.

Yes, avast would automatically scan your pop3/smtp/imap traffic if you have Windows XP\2k.

I know i can use Avast itself as a mail proxy, looking into that too

Well, I don't know mail proxies too much.
Probably if you read the MailScanner section in avast4.ini file (see 'Settings' on my signature) you will be able to 'redirect' avast and tweak its behavior. Hope this helps.
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: DavidR on December 31, 2004, 06:22:10 PM
It depends on what is coming across the network (copying a file from one system to your own, etc.)?

If you have the Standard Shield sensitivity set to High or Custom, then newly created files will be scanned.
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: Goner on January 02, 2005, 12:24:16 AM
It depends on what is coming across the network (copying a file from one system to your own, etc.)?
not files, mail ... it actually scans messages (SMTP & POP3) passing thru the server from/to other machines on the network.
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: Goner on January 02, 2005, 12:29:24 AM
Yes, avast would automatically scan your pop3/smtp/imap traffic if you have Windows XP\2k.
i know, but it surprised me that it also scans non-standard port-numbers ... and even puts in the 'clean' message !

Quote
Well, I don't know mail proxies too much.
Probably if you read the MailScanner section in avast4.ini file (see 'Settings' on my signature) you will be able to 'redirect' avast and tweak its behavior. Hope this helps.
yeah, there is a very good description in the Help under "Manual setting of mail protection" ... works like a charm.
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: lukor on January 03, 2005, 02:49:01 PM
avast! scans the mails when they enter/leave the server with the proxy - the mail proxy is connecting to the port 110 or 25 on the remote host, and these are standard ports.

But you can configure avast! to scan non standard ports as well if you would like to - please search the forum for PopRedirectPort / SmtpRedirectPort.

Lukas.
Title: Re:Mail-scanner also scans non-standard ports ?
Post by: Goner on January 04, 2005, 12:08:57 AM
avast! scans the mails when they enter/leave the server with the proxy - the mail proxy is connecting to the port 110 or 25 on the remote host, and these are standard ports.
ah, OK !! that explains it ... thanks !