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config:filter_files [2017/12/09 13:47]
digital man [Filter Exemption Files] Added link to default ipfilter_exempt.cfg
config:filter_files [2019/02/01 16:59]
digital man Not that leading white-space is now significant. Other minor edits.
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 Filter configuration (''​[[dir:​ctrl]]/​*.cfg''​) and trash can (''​[[dir:​text]]/​*.can''​) files allow the sysop to specify words (or any sequence of characters) that will be used to disallow clients, users, or their content. Filter configuration (''​[[dir:​ctrl]]/​*.cfg''​) and trash can (''​[[dir:​text]]/​*.can''​) files allow the sysop to specify words (or any sequence of characters) that will be used to disallow clients, users, or their content.
  
-Each line in a filter file may contain a comparison sequence. ​ Blank lines and lines beginning with a semicolon are ignored+Each line in a filter file may contain a comparison sequence. ​ Blank lines and lines beginning with a semicolon are ignored
 + 
 +**Note**: 
 +Prior to v3.17c, leading white-space in filter file lines was ignored. As of v3.17c, leading white-space *is* significant and can be used for filters such " *" to filter (reject) any matches that begin with a leading space character.
  
 ===== Comparison Sequences ===== ===== Comparison Sequences =====
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   * Sequences //​beginning//​ with an asterisk (''​*''​) match only if the characters following the ''​*''​ are found at the end of the comparison string   * Sequences //​beginning//​ with an asterisk (''​*''​) match only if the characters following the ''​*''​ are found at the end of the comparison string
   * Sequences //ending// with an asterisk (''​*''​) or caret (''​^''​) match only if the characters preceding are found at the beginning of the comparison string   * Sequences //ending// with an asterisk (''​*''​) or caret (''​^''​) match only if the characters preceding are found at the beginning of the comparison string
-  * Sequences //ending// with a tilde (''​~''​) match only if the preceding characters are found anywhere within comparison string+  * Sequences //ending// with a tilde (''​~''​) match when the preceding ​string of characters are found //anywhere// within ​the comparison string
   * All other sequences are "exact match" string comparisons   * All other sequences are "exact match" string comparisons
    
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   * ''​sysop''​ in the ''​name.can''​ file would mean users could not use the name "​sysop"​.   * ''​sysop''​ in the ''​name.can''​ file would mean users could not use the name "​sysop"​.
   * ''​sysop*''​ would mean users could not use names beginning with the word "​sysop",​ like "​sysopa"​ or "​sysops"​ etc.   * ''​sysop*''​ would mean users could not use names beginning with the word "​sysop",​ like "​sysopa"​ or "​sysops"​ etc.
-  * ''​sysop~''​ would mean users could not use names that have the word "​sysop"​ anywhere in them, like "​imthesysop"​ or "mesysophere".+  * ''​sysop~''​ would mean users could not use names that have the word "​sysop"​ anywhere in them, like "​imthesysop"​ or "Joe Sysop".
  
 ===== IPv4 CIDR Notation ===== ===== IPv4 CIDR Notation =====
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 The following table lists the supported trash can files, a description of their use, and optional rejection message (''​.msg''​) files that may be displayed to users that are (or have their content) filtered. Trash can files and their respective optional rejection message files are located in the ''​[[dir:​text]]''​ directory: The following table lists the supported trash can files, a description of their use, and optional rejection message (''​.msg''​) files that may be displayed to users that are (or have their content) filtered. Trash can files and their respective optional rejection message files are located in the ''​[[dir:​text]]''​ directory:
  
-^Filename / Page     ​^Default Contents^Rejection Message^Description^+^Filename / Page     ​^Default Contents^Rejection Message((Rejection message files are only used/​displayed by the terminal server))^Description^
 |''​[[email.can]]'' ​  ​|[[http://​cvs.synchro.net/​cgi-bin/​viewcvs.cgi/​*checkout*/​text/​email.can|email.can]]|''​[[bademail.msg]]''​|Disallowed (source or destination) e-mail addresses (see also ''​[[twitlist.cfg]]''​)| |''​[[email.can]]'' ​  ​|[[http://​cvs.synchro.net/​cgi-bin/​viewcvs.cgi/​*checkout*/​text/​email.can|email.can]]|''​[[bademail.msg]]''​|Disallowed (source or destination) e-mail addresses (see also ''​[[twitlist.cfg]]''​)|
 |''​[[file.can]]'' ​  ​|[[http://​cvs.synchro.net/​cgi-bin/​viewcvs.cgi/​*checkout*/​text/​file.can|file.can]]|''​[[badfile.msg]]''​|Disallowed filenames for upload| |''​[[file.can]]'' ​  ​|[[http://​cvs.synchro.net/​cgi-bin/​viewcvs.cgi/​*checkout*/​text/​file.can|file.can]]|''​[[badfile.msg]]''​|Disallowed filenames for upload|
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   * [[:​config:​|Configuration]]   * [[:​config:​|Configuration]]
  
-{{tag>​filter abuse}}+{{tag>​filter abuse spam}}
  

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