integration of security enhancement patch
afort at choqolat.org
Tue Jan 6 05:22:18 UTC 2004
On 5/01/2004 9:20 PM, Erik Wenzel wrote:
>On Fri, Jan 02, 2004 at 01:34:56PM -0500, Joshua Wright wrote:
>>Changing RANCID to perform "show startup-config" instead of a running
>>configuration is "a bad idea" (tm). If an attacker were able to
>>compromise your router and make changes to the configuration, RANCID
>>in its current state will identify the changes and let you know about
>>it. If RANCID used "show startup-config" instead, you would be
>>unaware of the changes until they were saved. The running
>>configuration is a better reflection of the state of the router.
>Using Rancid to check if an attacker is compromising your routers is
>only possible if only one person is having write access. If you have
>a colleague you are not able to distinguish configuration changes coming
>from your colleague or an attacker. So, using RANCID for that purpose is
>one thing. On the other Hand is the purpose of having backups for desaster
>recovery and for that I can't see a reason to prefer one of the other.
>In a production environment I concider it "a bad idea (TM)" to have a
>difference between both configurations.
I think you both have a point worthy of argument, but noone wins
arguments. There's no reason why the site administrator can't do this
locally, nor why it could not be a configuration (bin/env) variable.
The quick hack I just did to do this is kinda ugly (rewrite both the
%commands and @commands variables _entirely_, based on whether a ENV
variable is set one way or another), so I wont submit it if there's a
cleaner way to just re-write that last line. Can someone submit a
cleaner method? (Default behaviour remains the same, i.e., if there's
no variable in the bin/env file).
What do other people think? I've often had people ask me "oh, why
doesn't RANCID look at the startup config", and I've explained it as
Joshua has, above, but Erik makes a good point, and this seems like
something that should be decided by the administrator.
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