Hi guys.

I have just fallen over an interesting (I think) issue with firewalls in
general that I'm hoping you can give me some ideas about.

I'm trying to access an online tax return service provided by the
Australian Tax Office.  They're using some sort of SSL protocol for
security.  They won't tell me what ports it requires open because they
say that impacts on their security.  I have found a list of SSL ports
required for various protocols (ie ftp ssl, http ssl etc) but I'm not
sure which protocols the Tax Office is using and there's no guarantee
they've used standard ports anyway.

Anyone have any ideas how to get a round this?  If I booted my Bering as
a router only (ie not firewall) would that help?  I think I can select
that option from the Network configuration file?

If that's not an option, I would like to have a play with allowing net
to loc on all the ports I can find that look like they might have an SSL
association.  Do I just add an:

ACCEPT  net     loc     tcp     443
ACCEPT  net     loc     tcp     990 etc

or do I need to DNAT each port to the to the particular loc IP?

Whatever I do I wouldn't keep it as a permanent thing.

Thanks for your thoughts.

David Pitts



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