Disable Mounting of Uncommon Filesystem Types
Append the following lines to /etc/modprobe.conf in order to prevent the usage of uncommon filesystem types:
install cramfs /bin/true
install freevxfs /bin/true
install jffs2 /bin/true
install hfs /bin/true
install hfsplus /bin/true
install squashfs /bin/true
install udf /bin/true
install freevxfs /bin/true
install jffs2 /bin/true
install hfs /bin/true
install hfsplus /bin/true
install squashfs /bin/true
install udf /bin/true
Using the install command inside /etc/modprobe.conf instructs the kernel module loading system to run the command specified (here, /bin/true) instead of inserting the module in the kernel as normal. This effectively prevents usage of these uncommon filesystems.
