Linux Today: Linux News On Internet Time.
Search Linux Today
Linux News Sections:  Developer -  High Performance -  Infrastructure -  IT Management -  Security -  Storage -
Linux Today Navigation
LT Home
Contribute
Contribute
Link to Us
Linux Jobs


Top White Papers

More on LinuxToday


Two more utilites for DansGuardian Users

Nov 26, 2010, 11:02 (0 Talkback[s])
(Other stories by jhansonxi)

[ Thanks to jhansonxi for this link. ]

"I reduced the DansGuardian user account and blacklist maintenance hassles with my previous two utilities but while working on whitelisting I found the need for a few more.

"In DansGuardian (DG) terms a blacklist bans something, a greylist allows something (overrides blacklisting) but still filters it, and an exceptionlist allows something without filtering (overriding greylists and blacklists). The "something" can be URLs, IP addresses, server names, etc., depending upon the specific list type. Blacklisting a site is easy but blacklisting a specific type of content is very difficult and error-prone. It works the same way as anti-malware utility definitions - if the undesirable items are on the list, and they match a particular requested target, then it's blocked. If not, then it gets through. It's a big Internet out there and trying to block all the bad is rather difficult. "Bad" is also relative and what is bad for one person/religious group/company/government may not be bad for another. Whitelisting has the opposite problems in that you gain strict control over what is available but trying to predict where the user wants to go, determining if that is a safe destination, and maintaining the lists is also difficult.

"I found that I needed to use both blacklisting and whitelisting."

Complete Story

Related Stories: