[ILUG] ISDN - Is it up? Am I being charged? 2 questions.

[Conor Daly]

On Tue, Sep 25, 2001 at 09:39:07AM +0100 or thereabouts, Wynne, Conor wrote:
> Hi guys,
> 
> Q2: I am thinking about going the dial automagically upon browser request
> route. But I am afraid that doze will make it connect by accident. What type
> of traffic would cause the connection to establish? Can SMB cause this? What
> about Netscape Messanger from either linux or doze? I really don't wan't to
> get stuck with a 1 trillion euro bill. 

I use diald and doze doesn't cause spurious dialups but I _did_ have to set
up a local nameserver to acomplish this.  At least, I think I did.  I'm not
sure if the local nameserver or the "ignore udp" setting in the diald rules
is responsible.  I do notice that while mozilla'ing, I'll be viewing a site,
spend some time reading but not clicking links, the net connection goes down
and I later exit mozilla whereupon it tries to contact the site I was at to
wave goodbye thus triggering a dialup (most irritating!).

One possibility is creative use of firewall rules to deny internet access to
the doze box unless the net link is already up.  Easily accomplished with a
rule blocking the doze box from the net and a ppp0 link up script that
deletes that particular rule from the firewall and restores it when the net
link goes down.

Conor
-- 
Conor Daly 
Met Eireann, Glasnevin Hill, Dublin 9, Ireland
Ph +353 1 8064276 Fax +353 1 8064275
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