Re: Can I block _only_ privileged access with ipchains?

1999-02-03 Thread Carey Evans
[EMAIL PROTECTED] (Dale E. Martin) writes:

 I want my firewall to allow access from unprivileged ports to unprivileged
 ports.  So, if I connect to an ftp site on a port above 1023 and my client
 is using a port above 1023, the packets are allowed to cross.
 
 Possible?  I can find anything about it in the docs.  Any other comments?

If you're using Linux 2.2, I've put up a document at

 http://home.clear.net.nz/pages/c.evans/doc/homefirewall.html

that describes the setup I've got to allow this sort of thing.
Consider this the pre-release announcement; I've still got a bit of
clean-up work to do on it, but it's basically finished.

If you're running Linux 2.0, check the ipfwadm(8) man page; my docs
might still be of use.

-- 
 Carey Evans  http://home.clear.net.nz/pages/c.evans/
The risk of U.S. national security resting in the hands of adults who play
with children's toys during office hours is left as an exercise to the reader.
   - Bruce Martin in RISKS


Can I block _only_ privileged access with ipchains?

1999-02-02 Thread Dale E. Martin

Sorry, I know this isn't exactly debian specific...

I want my firewall to allow access from unprivileged ports to unprivileged
ports.  So, if I connect to an ftp site on a port above 1023 and my client
is using a port above 1023, the packets are allowed to cross.

Possible?  I can find anything about it in the docs.  Any other comments?
I know that this would allow a malicious user on my network to do insecure
things, but I trust myself, my wife, and my two month old baby ;-)

Thanks,
Dale
-- 
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| Dale E. Martin |  Clifton Labs, Inc.  |  Senior Computer Engineer|
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