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Barracuda Web Filter filtering subdomains

Posted on 2011-03-08
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Last Modified: 2012-05-11
We have a Barracuda 310 Web Filter.  I am creating a custom category so that I can allow some domains to certain groups.  The problem is, when I for instance add weather.gov, it allows that but not forecast.weather.gov or radar.weather.gov.  I thought it would allow all subdomains as well, but I must be missing something.
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Question by:jpletcher1
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Expert Comment

by:asavener
ID: 35083811
I assume you are at:

Block/Accept->Exceptions?

Have you considered using a regular expression?
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Author Comment

by:jpletcher1
ID: 35084178
I am adding the domain to a category and then creating an exception for the category.  I called support and they said that adding domains in a category only applies to the specific domain and not sub-domains.  If I add it as a regular expression under the exceptions list then it is supposed to apply to sub-domains.  That works, but the list can be long and messy doing it that way vs combining them in a category.  

Have you experienced this behavior?
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Expert Comment

by:asavener
ID: 35084320
Getting the Barracuda to do what you want it to is kind of an art....

I have not experienced that exact problem, but I'm not surprised by it.
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Author Comment

by:jpletcher1
ID: 35084378
Yes, setting things up on the web filter is very different from what I'm used to.  I get how they do it now, but it was not very intuitive and the documentation wasn't very helpful.  It does seem to work well once you get it configured.
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by:asavener
ID: 35084385
I just checked our config, and in our custom category we have multiple hosts listed for the same domain, so it appears we have the same issue.

"Domains" is misleading... they're not doing domain exceptions, they're doing hostname exceptions.
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Accepted Solution

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asavener earned 250 total points
ID: 35084408
It appears that your choices are:  list all hostnames for a given domain in the custom category, or have a long exceptions list using regular expressions.
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Author Comment

by:jpletcher1
ID: 35084419
Yes, that's how I understand it to be too.  Thanks for you help!
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