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Clamav unofficial sigs

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  • Title: Editing Clamav unofficial sigs
  • Author(s): Javier Alcazar
  • Date: August 8, 2014
  • Version(s): 1.0
  • Zentyal profiles: All


Editing Clamav unofficial sigs

This article will provide a solution to install an alternative signature database for the clamav antivirus that is included in the Zentyal package suite. In order to install these new antivirus mirrors on your Zentyal server, you can follow the next procedure:


1. Make sure that you have installed the following packages (these packages are included by zentyal-antivirus, but make sure that you have installed in your server):

dpkg -l | grep clamav 

the packages are:

ii  clamav                   0.98.1+dfsg-4ubuntu1.1          amd64        anti-virus utility for Unix - command-line interface 
ii  clamav-base          0.98.1+dfsg-4ubuntu1.1                 all          anti-virus utility for Unix - base package 
ii  clamav-daemon     0.98.1+dfsg-4ubuntu1.1          amd64        anti-virus utility for Unix - scanner daemon 
ii  clamav-freshclam  0.98.1+dfsg-4ubuntu1.1          amd64        anti-virus utility for Unix - virus database update utility 
ii  libclamav6            0.98.1+dfsg-4ubuntu1.1          amd64        anti-virus utility for Unix - library


2. Download: http://sourceforge.net/projects/unofficial-sigs/


3. Extract the tar file:

tar xfv clamav-unofficial-sigs-(version).tar.gz


4. Go to the folder:

cd clamav-unofficial-sigs-(version)

The folder includes:

-rw-r--r-- 1 root root 40304 jun  6  2010 CHANGELOG
-rw-r--r-- 1 root root  2789 jun  6  2010 clamav-unofficial-sigs.8
-rw-r--r-- 1 root root 12421 ago  5 16:43 clamav-unofficial-sigs.conf
-rw-r--r-- 1 root root   705 jun  6  2010 clamav-unofficial-sigs-cron
-rw-r--r-- 1 root root   138 jun  6  2010 clamav-unofficial-sigs-logrotate
-rwxr-xr-x 1 root root 76045 jun  6  2010 clamav-unofficial-sigs.sh*
-rwxr-xr-x 1 root root  9459 jun  6  2010 clamd-status.sh*
-rw-r--r-- 1 root root  5819 jun  6  2010 INSTALL
-rw-r--r-- 1 root root  1519 jun  6  2010 LICENSE
-rw-r--r-- 1 root root  3788 jun  6  2010 README


5. Change rights:

chmod 755 *.sh


6. Edit the clamav-unofficial-sigs.conf file with the following configurations:

  • Make sure that the PATH statement correctly defines the location of your binary files. These include: find, sed, awk, cut, grep, tail, hown, chmod, cmp, diff, dig, host, gzip, ls, cp, mv, test, gpg, xargs, sleep, urandom, chksum, rsync, curl, socat, etc. It has been reported that on Sun systems, the GNU utilities should be used rather than the default Sun versions.
  • System shell setting: Based on user feedback, it has been reported that "sh" works best for BSD variants, "ksh" for Sun Solaris, and "bash" for Linux variants. If you experience problems running the script, please try editing the top line olsf the script file and changing "sh" to either "ksh" or "bash" before reporting a problem.
  • Adjust configuration settings to meet your system requirements.
Script Clamav Path&User.png


Also, you will probably need to modify the following lines:

  • Set path to clamd.pid file (see clamd.conf for path location), clamd_pid="/var/run/clamav/clamd.pid":
Script Clamav clamd.png


  • When the configuration of the file is complete, set the following variable to "yes", user_configuration_complete="yes":
Script Clamav comfigcomplete.png


7. Edit the cron file clamav-unofficial-sigs-cron included in the package the we just downloaded before (you can set the desired time period): na 45 * * * * root /usr/bin/clamav-unofficial-sigs.sh -c /etc/clamav-unofficial-sigs.conf


8. Copy the files under the specific directories:

  sudo cp clamav-unofficial-sigs.sh /usr/bin
  cp clamav-unofficial-sigs.conf /etc
  cp clamav-unofficial-sigs.8 /usr/share/man/man8  
  cp clamav-unofficial-sigs-cron /etc/cron.d 
  cp clamav-unofficial-sigs-logrotate /etc/logrotate.d  


9. Test it:

/usr/bin/clamav-unofficial-sigs.sh -c /etc/clamav-unofficial-sigs.conf

If everything is correct the previous command should start downloading the extra signatures, showing the result below:


Script Clamav Result.png

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