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CDFS on Fedora 4 x86_64   
Monday, December 19 2005 @ 07:58 AM CST
Contributed by: psmith

AMD64I read Linegod's article on Cisco VPN client and decided to share some useful tips/info on my experiences with FC4 x86_64 on my laptop.

This topic would be better in a security or multimedia section, but here it is in the AMD64 Topic section...

I have been studying digital forensics and came across a kernel module called cdfs that allows you to mount multiple sessions from a cd. I was working on a test forensics problem involving a multi-session cd that would only mount one of three sessions from the evidence media.

I visited the homepage for cdfs and downloaded the source:

The original kernel for FC4 x86_64 would not compile this module correctly (or any other version I tried!) , but upgrading to 2.6.14-1.1644_FC4 did the trick.

I extracted the archive, ran make, make install and then modprobe cdfs to load the module, as clearly explained in the INSTALL file. After loading the module, I mounted the evidence media with:

# mount -t cdfs -o ro /dev/hdc /mnt/cdrom

I then did a ls -l /mnt/cdrom and found 3 iso images in the directory. I mounted the iso files to 3 seperate directories:

# mount -t iso9660 -o ro,noatime,loop session1.iso /mnt/loop1
# mount -t iso9660 -o ro,noatime,loop session2.iso /mnt/loop2
# mount -t iso9660 -o ro,noatime,loop session3.iso /mnt/loop3

And voila, all sessions from the cd mounted and ready for analysis! Hopefully someone might find this article of interest.

Paul Smith

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    CDFS on Fedora 4 x86_64 | 1 comments | Create New Account
    The following comments are owned by whomever posted them. This site is not responsible for what they say.
    CDFS on Fedora 4 x86_64
    Authored by: Linegod on Tuesday, December 20 2005 @ 01:13 AM CST
    Well, it compiles and loads on Mandriva 2006 x86-64, now I
    just have to find a multi-session CD......

    Created this page in 0.07 seconds

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