ClamAV on Mac with Kerio MailServer

1. Openssl Download Mac
2. Clamxav Download

ClamWin is a Free Antivirus program for Microsoft Windows 10 / 8 / 7 / Vista / XP / Me / 2000 / 98 and Windows Server 2012, 2008 and 2003. ClamAV ® is an open source antivirus engine for detecting trojans, viruses, malware & other malicious threats. Download The latest stable release is version 0.104.0. Download Clamav Mac Software. ClamAV Installer for Leopard for Mac OS v.0.95.2 Installs all the ClamAV command line tools and daemons (see clamav.net). It integrates ClamAV logs into OSX’s logging system so that they can be reviewed via the Consol app.

I downloaded ClamAV source from https://www.clamav.net. A simple ./configure; make; make install in the source directory was all that was required (thogh you do have to install the Xcode Tools from your install cd if you haven't already).

Well, gosh, that was easy. Now what?

Well, that depends on what you plan to do with it. If you only plan to scan files on your drives, there's nothing else you need.If you are planning to use the supplied 'clamav-milter' (see Sendmail Milters),you need to add the milter to your mail configuration (and you would have needed to run './configure --enable-milter' before compiling).See clamav-milter(link dead, sorry)for very basic instructions on adding this milter to sendmail.

In my case, I wanted to use it with Kerio Mailserver.

Kerio MailServer is able to work with several virus scanning engines. The preferred primary is McAfee, but (depending on your OS platform) other plugins can be used. As of version 6.1, they introduced the ability to do dual scanning, which allows each message to be scanned by two different AV products (one must be their McAfee option). Dual scanning can increase the chances of detecting viri.

Now with the 6.2 release (available in beta as I write this), ClamAV support has been added and can be used either as the stand-alone scanner or as the secondary to McAfee.

To use ClamAV with Kerio MailServer you need to get /usr/local/sbin/clamd running on the Mac (basically the same procedure applys to Linux) . That's going to requre editing (with sudo) two configuration files: /usr/local/etc/clamd.conf and /usr/local/etc/freshclam.conf

ClamAV forces you to at least comment out the 'Example' line from these files:

# Comment or remove the line below.
Example

For freshclam.conf that may be all you want or need to do, but at least this made you aware that the file exists and that you do have options to control freshclam. Freshclam is the program that updates Clamav's virus database, so you probably want to set it to run periodically with cron.

You'll need to do a little more with /usr/local/etc/clamd.conf. In addition to commenting out the 'Example', you need to set 'TCPSocket 3310' and you probably want to set 'TCPAddr 127.0.0.1' unless Kerio is running on a different machine than ClamAV.

With these set, you can start /usr/local/etc/clamd. After starting it, you should see it listening on port 3310:

$ sudo /usr/local/sbin/clamd
$ sudo lsof -i:3310
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
clamd 18975 root 0u IPv4 0x2f92e88 0t0 TCP localhost:dyna-access (LISTEN)

Of course you'll want clamd starting up on reboot. It would be best to handle that through Launchd but you could also just add it to /etc/rc if you want. Launchd gives you more control to restart if necessary.

Kerio automatically tests Clam with an EICAR file but you can send the same pattern to a local user if you aren't the trusting sort. I tested, and found the expected entry in the Kerio Security Log:

I'm glad to see this support added to Kerio. I think it would have been better if they had implemented milter support because that would allow even more options for Kerio users, but this is a welcome addition.

Got something to add? Send me email.

Case Western Reserve University's Acceptable Use Policy requires computers on the University's network to have antivirus software. Symantec Endpoint Protection is no longer available for download. For other options, see the section for your operating system.

Downloading and Installing Windows Defender Antivirus

Windows Security is built-in to Windows 10 and includes an antivirus program called Microsoft Defender Antivirus. If you have another antivirus app installed and turned on, Microsoft Defender Antivirus will turn off automatically. If you uninstall the other app, Microsoft Defender Antivirus will turn back on automatically.

Run a quick scan in Windows Security

Select Start > Settings > Update & Security > Windows Security > Virus & threat protection.

Under Current threats, select Quick scan.

• Note: Previous versions of Windows 10 this may be under Threat history, then select Scan now.

For more information, visit Microsoft's Windows Defender page.

For personally-owned devices, consider using AVG. While this software is intended for personal use, a recommendation for university-owned devices is forthcoming.

Downloading and Installing AVG

1. Download the software from AVG's website.
2. On the right-hand side select 'Free Download'.
3. After the download is complete, open the install package.
4. Click 'Install AVG AntiVirus'.
5. Follow the on-screen instructions.

Run a Scan

1. Open AVG
2. Click 'Scan Mac'

Install ClamAV

To install ClamAV on Debian or Ubuntu Linux

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1. Open Terminal from the Applications menu, and execute the following command:
   • sudo apt-get install clamav clamav-daemon clamav-freshclam clamtk
2. This command will install multiple ClamAV packages. More information about these can be found below.
   • clamav: This is the command-line virus scanner and engine. It can run scans on demand from Terminal, using the command clamscan.
   • clamav-daemon: This package allows ClamAV to be run on a schedule, as an on-access scanner.
   • clamav-freshclam: This package enables automatic updates for ClamAV.
   • clamtk: This is the GUI frontend for ClamAV.
3. Once these packages have been installed, ClamAV can be run by opening the ClamTk application from the Applications menu.

To install ClamAV on CentOS or Red Hat Linux

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• Open Terminal from the Applications menu, and execute the following commands:
  1. sudo yum -y install epel-release
  2. sudo yum clean all
     • This step is necessary because ClamAV is not included in the default yum repository
  3. sudo yum -y install clamav-server clamav-data clamav-update clamav-filesystem clamav clamav-scanner-systemd clamav-devel clamav-lib clamav-server-systemd
  4. sudo systemctl enable clamd@scan.service
     • This will enable the ClamAV daemon to run scheduled scans automatically