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Install antivirus ClamAV on Linux machine

Discussion in 'General Discussion' started by samba, Oct 13, 2006.

  1. samba

    samba Registered

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    Hello,

    How can I install antivirus ClamAV on Linux machine. Please provide me the exact steps to install it on server. i have my own dedicated linux server.

    It’s urgent. :eek:

    Thanks,

    Samba
     
  2. sssathish

    sssathish Member

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  3. mrcbrown

    mrcbrown Well-Known Member

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    Most standard distros have a clam RPM/DEB nowdays, but if your doing it for cPanel, check the add-on's in WHM, it has a option to install it.
     
  4. sssathish

    sssathish Member

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    How to Get it

    Now here is how NOT to do it! Hop to INRIA in France at www.rpmfind.net and get the following RPM files for Mandrake i586:

    clamav-0.61-0.20030829.1mdk.i586.rpm
    libclamav1-0.61-0.20030829.1mdk.i586.rpm
    clamav-db-0.61-0.20030829.1mdk.i586.rpm
    libgmp3-4.1.2-4mdk.i586.rpm

    A quick check revealed that libgmp is already installed (rpm -q libgmp); one less for me to worry about. Lib files should be installed before other files, but when I try to install clamav-db, it says that it requires clamav and when I try to install clamav, it says it requires clamav-db, blech...

    # rpm -i libclam[tab]
    # rpm -i --nodeps clamav-db[tab]
    # rpm -i clamav[tab]

    The --nodeps option fixes the circular dependency and off we go.

    It seemed OK up to this point, but when I tried to run the clamd daemon, it was nowhere to be found, so what exactly was in those schtoopidttt RPMS???

    ...and here is the better way to do it: Get the source tarball from http://clamav.sourceforge.net and compile it:

    # tar -zxvf clamav.0.7[tab]
    # cd clamav.0.7[tab]
    # ./configure --sysconfdir=/etc
    configure: WARNING: ****** GNU MP 2 or newer NOT FOUND - digital signature support will be disabled !

    Bah, humbug! - this is getting annoying. Off to find GNU MP2 or newer at http://www.swox.com/gmp/ and compile it:

    # tar -zxvf gmp[tar]
    # cd gmp[tab]
    # ./configure
    # make
    # make install

    Well, hot damn, that was a looong wait. Let's get back to Clam AV and see how it goes this time around:

    # cd ../clamav0.7[tab]
    # ./configure --sysconfdir=/etc
    # make
    # make install
    # clamd
    ERROR: Please edit the example config file /etc/clamav.conf.
    ERROR: Can't open/parse the config file /etc/clamav.conf

    Cool, now we know clamd exists and where the configuration file should go. We shall Never surrender!
    ------------------------------------------------------

    Configuration

    We need a user and group clamav. This may already exist. Do the following, if it already exists, then nothing much will happen:

    # groupadd clamav
    # useradd -g clamav -s /bin/false -c "Clam AntiVirus" clamav

    Edit file /etc/clamav.conf. Comment out Example and increase the number of threads to 10 or more. Try to scan the source directory recursively:

    # cd ..
    # clamscan -r -l scan.txt clamav-0.75.1

    It should find the virus examples in the source distribution - worked for me. If it doesn't, then you are SOL and need to try another version, an older one maybe.
    ----------------------------------------------------------------

    Updater

    A virus tool goes stale faster than a hotdog bun in Arizona. We need to automate the database update, else it won't be effective for more than a few days:

    # touch /var/log/clam-update.log
    # chmod 600 /var/log/clam-update.log
    # chown clamav /var/log/clam-update.log
    # freshclam -d -c 2 -l /var/log/clam-update.log

    Also add that last line to the bottom of /etc/rc.d/rc.local to start the daemon after a reboot.

    Now we have ClamAV installed and it should stay up to date all by itself.
     
  5. p.kiula

    p.kiula Member

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    Thanks, but how do you associated ClamAV with Exim, to make sure all incoming mail is analyzed?
     
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