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freshclam.conf(5)                         Clam AntiVirus                        freshclam.conf(5)

       freshclam.conf - Configuration file for Clam AntiVirus database update tool

       The file freshclam.conf configures the Clam AntiVirus Database Updater, freshclam(1).

       The  file  consists  of comments and options with arguments. Each line which starts with a
       hash (#) symbol is ignored by the parser. Options and arguments are case sensitive and  of
       the form Option Argument. The arguments are of the following types:

       BOOL   Boolean value (yes/no or true/false or 1/0).

       STRING String without blank characters.

       SIZE   Size  in  bytes.  You can use 'M' or 'm' modifiers for megabytes and 'K' or 'k' for

       NUMBER Unsigned integer.

       When an option is not used (hashed or doesn't exist in the configuration  file)  freshclam
       takes a default action.

              If this option is set freshclam will not run.

       LogFileMaxSize SIZE
              Limit  the  size  of the log file. The logger will be automatically disabled if the
              file is greater than SIZE. Value of 0 disables the limit.
              Default: 1M

       LogTime BOOL
              Log time with each message.
              Default: no

       LogSyslog BOOL
              Enable logging to Syslog. May be used in combination with UpdateLogFile.
              Default: disabled.

       LogFacility STRING
              Specify the type of syslog messages - please refer to  'man  syslog'  for  facility
              Default: LOG_LOCAL6

       LogVerbose BOOL
              Enable verbose logging.
              Default: disabled

       LogRotate BOOL
              Rotate log file. Requires LogFileMaxSize option set prior to this option.
              Default: no

       PidFile STRING
              This option allows you to save the process identifier of the daemon to a file spec‐
              ified in the argument.
              Default: disabled

       DatabaseDirectory STRING
              Path to a directory containing database files.
              Default: /var/lib/clamav

       Foreground BOOL
              Don't fork into background.
              Default: no

       Debug BOOL
              Enable debug messages in libclamav.
              Default: no

       UpdateLogFile STRING
              Enable logging to a specified file. Highly recommended.
              Default: disabled.

       DatabaseOwner STRING
              When started by root, drop privileges to a specified user.

       Checks NUMBER
              Number of database checks per day.
              Default: 12

       DNSDatabaseInfo STRING
              Use DNS to verify the virus database version. Freshclam uses  DNS  TXT  records  to
              verify  the  versions  of the database and software itself. With this directive you
              can change the database verification domain.
              WARNING: Please don't change it unless you're configuring freshclam to use your own
              database verification domain.
              Default: enabled, pointing to current.cvd.clamav.net

       DatabaseMirror STRING
              DatabaseMirror  specifies  to  which mirror(s) freshclam should connect. You should
              have at least two entries: db.XY.clamav.net (or db.XY.ipv6.clamav.net for IPv6) and
              database.clamav.net  (in this order). Please replace XY with your country code (see
              https://www.iana.org/domains/root/db). database.clamav.net is a round-robin  record
              which  points  to  our  most  reliable  mirrors.  It's  used as a fall back in case
              db.XY.clamav.net is not working.
              Default: database.clamav.net

       PrivateMirror STR
              This option allows you to easily point freshclam to private mirrors. If PrivateMir‐
              ror  is  set,  freshclam does not attempt to use DNS to determine whether its data‐
              bases are out-of-date,  instead  it  will  use  the  If-Modified-Since  request  or
              directly  check the headers of the remote database files. For each database, fresh‐
              clam first attempts to download the CLD file. If that fails, it tries  to  download
              the CVD file. This option overrides DatabaseMirror, DNSDatabaseInfo and ScriptedUp‐
              dates. It can be used multiple times to provide fall-back mirrors.
              Default: disabled

       MaxAttempts NUMBER
              How many attempts (per mirror) to make before giving up.
              Default: 3 (per mirror)

       ScriptedUpdates BOOL
              With this option you can control scripted updates. It's highly recommended to  keep
              it enabled.
              Default: yes

       TestDatabases BOOL
              With  this option enabled, freshclam will attempt to load new databases into memory
              to make sure they are properly handled by libclamav before replacing the old ones.
              Default: enabled

       CompressLocalDatabase BOOL
              By default freshclam will keep the local  databases  (.cld)  uncompressed  to  make
              their  handling faster. With this option you can enable the compression; the change
              will take effect with the next database update.
              Default: no

       ExtraDatabase STRING
              Download an additional 3rd party signature database distributed through the  ClamAV
              mirrors. This option can be used multiple times.
              Default: disabled

       DatabaseCustomURL STRING
              With  this  option you can provide custom sources (http:// or file://) for database
              files. This option can be used multiple times.
              Default: disabled

       HTTPProxyServer STR, HTTPProxyPort NUMBER
              Use given proxy server and TCP port for database downloads. HTTPProxyPort  defaults
              to 8080.

       HTTPProxyUsername STR,HTTPProxyPassword STRING
              Proxy usage is authenticated through given username and password.
              Default: disabled

       HTTPUserAgent STRING
              If your servers are behind a firewall/proxy which applies User-Agent filtering, you
              can use this option to force the use of a different User-Agent header.
              Default: clamav/version_number

       NotifyClamd STRING
              Notify a running clamd(8) to reload its database after a download has occurred. The
              path for clamd.conf file must be provided.
              Default:  The  default is to not notify clamd. See clamd.conf(5)'s option SelfCheck
              for how clamd(8) handles database updates in this case.

       OnUpdateExecute STRING
              Execute this command after the database has been successfully updated.
              Default: disabled

       OnErrorExecute STRING
              Execute this command after a database update has failed.
              Default: disabled

       OnOutdatedExecute STRING
              Execute this command when freshclam reports outdated version. In the command string
              %v will be replaced by the new version number.
              Default: disabled

       LocalIPAddress IP
              Use IP as client address for downloading databases. Useful for multi homed systems.
              Default: Use OS'es default outgoing IP address.

       ConnectTimeout NUMBER
              Timeout in seconds when connecting to database server.
              Default: 10

       ReceiveTimeout NUMBER
              Timeout in seconds when reading from database server.
              Default: 30

       SafeBrowsing BOOL
              This  option enables support for Google Safe Browsing. When activated for the first
              time, freshclam will download a new database file (safebrowsing.cvd) which will  be
              automatically  loaded  by  clamd and clamscan during the next reload, provided that
              the heuristic phishing detection is turned on. This database  includes  information
              about  websites  that  may  be  phishing sites or possible sources of malware. When
              using this option, it's mandatory to run  freshclam  at  least  every  30  minutes.
              Freshclam  uses  the  ClamAV's mirror infrastructure to distribute the database and
              its updates but all the contents are provided under  Google's  terms  of  use.  See
              https://support.google.com/code/answer/70015    and    https://www.clamav.net/docu‐
              ments/safebrowsing for more information.
              Default: disabled

       Bytecode BOOL
              This option enables downloading of bytecode.cvd, which includes  additional  detec‐
              tion mechanisms and improvements to the ClamAV engine.
              Default: enabled


       Thomas   Lamy   <thomas.lamy AT netwake.de>,   Tomasz   Kojm  <tkojm AT clamav.net>,  Kevin  Lin
       <klin AT sourcefire.com>

       freshclam(1), clamd.conf(5), clamd(8), clamscan(1)

ClamAV 0.100.0                           December 4, 2013                       freshclam.conf(5)

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