On 22 Feb 99, at 9:03, Blanco, Juan wrote:
> Folks what should I do here, we are using Firewall-1 version 4.0. Below is
> a message that already two users got. Thanks in Advanced for your help.
> -Tony
>
> Notice of Failure to Validate Download
> <snip>
> *NOTE: A reverse lookup is a process whereby our web server tries to
> convert your IP address into a valid Host Name. If this cannot be done at
> the time of download, we have no other choice but to deny access.
Your externally-visible DNS (you might have to create one, if you do
not have one...) needs to provide reverse lookup (numeric "domain")
information for the external addresses used by your users. [Tallk to
your ISP about implementation details....]
Note that (a) DNS is a popular target, but (b) there's no need for
this DNS to talk to anything behind your firewall. It could go in a
DMZ.
David G
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