Class Ext: Extended - Rom (Ext_Rom) - Belkin F1DN102C User Manual

Belkin® Secure DVI KVM Switch, Secure KM Switch and
Secure Windowing KVM EAL 4 augmented ALC_FLR.3 Security Target
EXT_IUC.1.1
5.3 Class EXT: Extended – ROM (EXT_ROM)
The ROM requirement protects the TOE from remote tampering by re‐programming of
programmable components in the TOE. The use of non‐volatile memory with mask ROM, OTP
(One Time Programming) or fused write protection assures that firmware may not be changed
after TOE production. All non‐volatile memory devices used must be soldered directly to the
board (not attached with a socket).
Family Behavior
This family defines the read‐only (write‐protection) feature required to protect the
firmware stored on all TOE non‐volatile memory devices.
Component Leveling
EXT_ROM Read only ROM, requires that the TSF disable all attempts to re‐write data to
the TOE non‐volatile memory.
Management: EXT_ROM.1
There are no management activities foreseen.
Audit: EXT_ROM.1
There are no auditable events foreseen.
EXT_ROM.1
Hierarchical to:
Dependencies:
EXT_ROM.1.1
All USB devices connected to the Peripheral switch shall be
interrogated to ensure that they are valid (pointing device,
keyboard, user authentication device, display). No further
interaction with non‐valid devices shall be performed.
Read Only ROMs
No other components.
No dependencies.
TSF software embedded in TSF ROMs must be contained in mask‐
programmed or one‐time‐programmable read‐only memory
permanently attached (non‐socketed) to a circuit assembly.
Rev. 1.01
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