Subject: Re: FH munging
To: None <tech-kern@NetBSD.ORG>
From: der Mouse <mouse@Rodents.Montreal.QC.CA>
Date: 03/26/1997 07:40:00
>>> What are inode generation numbers for? [(1)ESTALE, (2)guessing]
>> It might be worth noting that generation numbers were meant for (1)
>> and not (2). The latter is a recent hoax that, IMHO, does very
>> little if anything for security.
> Well, it might be a hoax, but its the only security NFS has. If you
> can guess a handle, you don't even need to be on the list of clients
> allowed to touch a machine's file systems.
Then the NFS server is critically broken. (Granted, a lot of vendors'
NFS servers are broken in this way - this doesn't make it any less
broken. This is one reason firewall vendors are doing such good
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