On Tue Oct 05 1999 at 20:58, " " wrote:

It would be nice if you formatted your messages much more gracefully...

> If I need to block all data from going out over a PPP-connection for a few minutes, 
>how do I do it?  The procedure would be used frequently but always only for a very 
>short time, thus should take a few seconds at most to activate/deactivate.

Very likely any number of ways, but other than bringing down the
default route I can't think of any elegant ways to do it.  Perhaps
there's a signal you can give to pppd to so this (I don't recall so).
Someone else might have some better solutions.

> By the way, can any hackers invade my linux box when I'm connected via PPP but do 
>not have an IP address myself?

If you cat connected to the internet you DO have an IP address, even
it it's only temporary and dynamically assigned.

And yes, you ARE vulnerable.  Unless you do things like trim
/etc/inetd.conf and set up tcp_wrappers with appropriate entries in
the /etc/hosts.{allow,deny} files.

Cheers
Tony
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  Tony Nugent <[EMAIL PROTECTED]>          Systems Administrator
  GrowZone OnLine       (a project of) GrowZone Development Network
  POBox475 Toowoomba Oueensland Australia 4350     Ph: 07 4632 8344
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