Lookuop of all subdomains of external domain name

We have introduced a web filter at the company where I work (Im the IT Manager).

The web filter allows exceptions. But its so secure (not a bad thing!!) that I need to add all subdomains to the exceptions listing.

So if I wanted to allow http://news.bbc.co.uk I need to add that and not just http://bbc.co.uk.

The web filter wont allow wildcards.

So my questions is, is there an easy way to retrieve the DNS listing for bbc.co.uk that will give me all the subdomains of the parent domain name?

LVL 13
Mark GalvinManaging Director / Principal ConsultantAsked:
Who is Participating?
Narender GakkaConnect With a Mentor AWS / DevOps / Cloud ConsultantCommented:
There must be a wildcard support in any webfilter can I know which web filter you are using.

You can't manually add every subdomain's they keep on creating every time for not only BBC but other sites as well.

Mark GalvinManaging Director / Principal ConsultantAuthor Commented:
The support team have come back to me with the following:

"It depends on your definition of sub domains.
If you are referring to www.google.com/news. Then a whitelist domain will include all of www.google.com/ and all of the sub domains off of google.com/xxxxxxxx
If you are referring to news.google.com. I recommend you use the url pattern matching instead, so any url that matches "google.com" well be allowed."

I LOVE the idea that they think I could be referring to a web page in the context of a subdmain!!

Any way - points to Vikshi as you were correct in the sense that there must be a way on the unit to cope with sub domains!!

All Courses

From novice to tech pro — start learning today.