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8.1

OpenBSD DansGuardian Ad Filtering

Asked by plexter2k in OpenBSD, Latest Threats, Unix Network Security

Tags: openbsd, dansguardian, content filter, ad

Hi,

A little while ago I installed Dansguardian w/ ClamAV from the OpenBSD 4.5 package. I'm running squid for the proxy all on the same OpenBSD 4.5 system.

The software seems to be 'working' fine with the exception of a few issues I've encountered. Most likely these are configuration errors as apposed to application malfunction. Hoping someone will be able to help!

Issue 1:

I've been trying to have more than one filter group with authentication based on the IP address only. When I run Dans I see the following code title "Issue 1"

Issue 2:

Regarding the AD blocking. How can I specify a custom list to be treated as an AD list. I would like to make use of replacing images with the replacement image provided with Dans. Currently I seem to only be able to block using my "denied page" which technically works but I'd prefer to just see nothing at all. See configuration code below title "Issue 2"

Issue 3:

Not sure if this is an issue. However I see prompts about ClamAV when I start Dans. Should I upgrade or will this cause compatibility issues? See error below title "Issue 3"



If I've missed some configs please let me know.

Any help/suggestions would be greatly appreciated.
Thanks! 





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Issue 1:
 
Filter group out of range; entry 10.10.200.0/255.255.255.0 = LAN in /etc/dansguardian/lists/authplugins/ipgroups
Sep 28 10:49:55 FW002 dansguardian[24093]: Filter group out of range; entry 10.10.200.0/255.255.255.0 = LAN in /etc/dansguardian/lists/authplugins/ipgroups
 
Configuration files (relevant)
 
Config:  dansguardian.conf
 
# Filter groups options
# filtergroups sets the number of filter groups. A filter group is a set of cont
# filtering options you can apply to a group of users.  The value must be 1 or m
# DansGuardian will automatically look for dansguardianfN.conf where N is the fi
# group.  To assign users to groups use the filtergroupslist option.  All users
# to filter group 1.  You must have some sort of authentication to be able to ma
# to a group.  The more filter groups the more copies of the lists will be in RA
# use as few as possible.
filtergroups = 2
filtergroupslist = '/etc/dansguardian/lists/filtergroupslist'
 
----
 
Config: /etc/dansguardian/lists/filtergroupslist
 
/etc/dansguardian/lists/filtergroupslist
 
user1=WIRELESS
user2=LAN
 
Config: /etc/dansguardian/lists/authplugins/ipgroups
 
#10.10.200.0/255.255.255.0 = LAN
#10.10.220.0/255.255.255.0 = WIRELESS
 
10.10.200.2-10.10.200.254 = LAN
10.10.220.1-10.10.210.254 = WIRELESS
 
I've tried using different combination's to specify the IP range as shown above.
 
 
 
Issue 2:
 
 
# Banned image replacement
# Images that are banned due to domain/url/etc reasons including those
# in the adverts blacklists can be replaced by an image.  This will,
# for example, hide images from advert sites and remove broken image
# icons from banned domains.
# 0 = off
# 1 = on (default)
usecustombannedimage = 1
custombannedimagefile = '/usr/local/share/dansguardian/transparent1x1.gif'
 
 
Issue 3:
 
LibClamAV Warning: **************************************************
LibClamAV Warning: ***  The virus database is older than 7 days!  ***
LibClamAV Warning: ***   Please update it as soon as possible.    ***
LibClamAV Warning: **************************************************
LibClamAV Warning: ***********************************************************
LibClamAV Warning: ***  This version of the ClamAV engine is outdated.     ***
LibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/support/faq ***
LibClamAV Warning: ***********************************************************
LibClamAV Warning: ***********************************************************
LibClamAV Warning: ***  This version of the ClamAV engine is outdated.     ***
LibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/support/faq ***
LibClamAV Warning: ***********************************************************
[+][-]10/01/09 03:14 AM, ID: 25467214

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Zones: OpenBSD, Latest Threats, Unix Network Security
Tags: openbsd, dansguardian, content filter, ad
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Solution Provided By: noci
Participating Experts: 1
Solution Grade: A
 
 
[+][-]10/02/09 09:28 AM, ID: 25479463

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