[864] in Zephyr_Bugs
Re: Question about multi-homed machines...
daemon@ATHENA.MIT.EDU (Robert Tommaselli)
Wed Jun 18 08:01:56 1997
From: "Robert Tommaselli" <rtommase@fir.fbc.com>
Date: Wed, 18 Jun 1997 08:01:35 -0400
In-Reply-To: John Hawkinson <jhawk@MIT.EDU>
"Re: Question about multi-homed machines..." (Jun 18, 7:27)
Reply-To: rtommase@fir.fbc.com
To: John Hawkinson <jhawk@MIT.EDU>, Greg Hudson <ghudson@MIT.EDU>
Cc: bug-zephyr@MIT.EDU
John,
Thanks for the idea. Since I work for a Swiss bank and security is
paramount. I'll opt for the least impactant solution. Some smart-alic will
probably find a way to abuse a bind() lib resolver thats a bit "loose".
I do agree that this seems like it would be a problem for more than just
zephyr software.
Luckily we have a strict global naming scheme that I can leverage a quick fix
on. I'll change the ip checking to on the zephyr server to resolve names using
the global nameing extentions.
ie. "hosta" will also authenticate "hosta-le[0-3]" and "hosta-fddi[0-3]".
Thanks again.
robert
On Jun 18, 7:27, John Hawkinson wrote:
> Subject: Re: Question about multi-homed machines...
> | This is a long-standing known bug. There aren't any particularly good
> | workarounds, unfortunately (other than setting the machine's hostname
> | to something that resolves to the interface address used to talk to
> | the server).
>
> And the potentially wasteful (of addresing) solution of assigning
> a numbered loopback to all such multihomed machines and modifying
> applications, such as zephyr, to bind to such a numbered loopback.
>
> Actually, it ocurrs to me that another solution would be to modify the
> C librarie's bind() call, at least for those applications that use
> dynamic linking...
>
> One would expect this problem to be an issue for multiple software
> packages...
>
> --jhawk
>-- End of excerpt from John Hawkinson
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