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freshclam.conf(5) Clam AntiVirus freshclam.conf(5) NAME freshclam.conf - Configuration file for Clam AntiVirus database update tool DESCRIPTION The file freshclam.conf configures the Clam AntiVirus Database Updater, freshclam(1). FILE FORMAT The file consists of comments and options with arguments. Each line which starts with a hash (#) symbol is ignored by the parser. Options and argu- ments 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 kilobytes. NUMBER Unsigned integer. DIRECTIVES When an option is not used (hashed or doesn't exist in the configuration file) freshclam takes a default action. Example 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 UpdateLog- File. Default: disabled. LogFacility STRING Specify the type of syslog messages - please refer to 'man syslog' for facility names. 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 Write the daemon's pid to the specified file. Default: disabled DatabaseDirectory STRING Path to a directory containing database files. This directory must already exist, be an absolute path, be writeable by freshclam and readable by clamd/clamscan. Default: /var/db/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. Default: clamav 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 con- nect. You should have at least one entries: database.clamav.net. Now that CloudFlare is being used as our Content Delivery Network (CDN), this one domain name works world-wide to direct freshclam to the closest geographic endpoint. Default: database.clamav.net PrivateMirror STR This option allows you to easily point freshclam to private mirrors. If PrivateMirror is set, freshclam does not attempt to use DNS to determine whether its databases 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, freshclam first attempts to download the CLD file. If that fails, it tries to download the CVD file. This option overrides DatabaseMirror, DNSDatabaseInfo and ScriptedUpdates. 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 rec- ommended to keep it enabled. Default: yes TestDatabases BOOL With this option enabled, freshclam will attempt to load new data- bases into memory to make sure they are properly handled by libcla- mav before replacing the old ones. Default: enabled CompressLocalDatabase BOOL By default freshclam will keep the local databases (.cld) uncom- pressed to make their handling faster. With this option you can en- able 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 ExcludeDatabase STRING Exclude a standard signature database (opt-out). This option can be used multiple times. Default: disabled DatabaseCustomURL STRING With this option you can provide custom sources for database files. This option can be used multiple times. Support for: http(s)://, ftp(s)://, or file:// Example usage: DatabaseCustomURL https://myserver.com:4567/allow_list.wdb Default: disabled HTTPProxyServer STR, HTTPProxyPort NUMBER Use given proxy server and TCP port for database downloads. The HTTPProxyServer may be prefixed with [scheme]:// to specify which kind of proxy is used. http:// HTTP Proxy. Default when no scheme or proxy type is specified. https:// HTTPS Proxy. (Added in 7.52.0 for OpenSSL, GnuTLS and NSS) socks4:// SOCKS4 Proxy. socks4a:// SOCKS4a Proxy. Proxy resolves URL hostname. socks5:// SOCKS5 Proxy. socks5h:// SOCKS5 Proxy. Proxy resolves URL hostname. 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. As of ClamAV 0.103.3, this setting may not be used when updating from the clamav.net CDN and can only be used when updating from a private mirror. 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 op- tion SelfCheck for how clamd(8) handles database updates in this case. OnUpdateExecute STRING Execute this command after the database has been successfully up- dated. 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 Maximum time in seconds for each download operation. 0 means no timeout. Default: 0 Bytecode BOOL This option enables downloading of bytecode.cvd, which includes ad- ditional detection mechanisms and improvements to the ClamAV engine. Default: yes FILES /usr/local/etc/freshclam.conf AUTHOR Thomas Lamy <thomas.lamy@netwake.de>, Tomasz Kojm <tkojm@clamav.net>, Kevin Lin <klin@sourcefire.com> SEE ALSO freshclam(1), clamd.conf(5), clamd(8), clamscan(1) ClamAV 1.4.4 December 4, 2013 freshclam.conf(5)
NAME | DESCRIPTION | FILE FORMAT | DIRECTIVES | FILES | AUTHOR | SEE ALSO
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