Focus on Linux
about /dev/shm? Apr 15 2006 03:14PM
Monty Ree (chulmin2 hotmail com) (2 replies)
Hello, all.

As you know, /dev/shm is 1777 and attackers used to write his backdoors at
that directory.
So I have saw the partition for some time and I can't see any creation of
the files.
So I changed this permission to 755, and there was no problem.

1. What's the role of the /dev/shm?
shm means shared memory?

2. Why this directory must be 1777?
Is there any problem when I change the permission to like 755?

Thanks in advance.

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[ reply ]
Re: about /dev/shm? Apr 17 2006 03:18PM
Thomas Howard Uphill (uphill ias edu)
Re: about /dev/shm? Apr 17 2006 02:51PM
ilaiy (ilaiy e gmail com)


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