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Physical access to a router or switch
gives a sufficiently sophisticated user total control over that
device. Nearly all switches and routers have "password-recovery
techniques" or other back doors to access the device without a
password. These techniques are publicly documented on the Internet!
It makes no sense to install software security measures when access
to the hardware is not controlled.
Physically secure network devices by
doing the following:
- Provide proper physical
environment - This includes lockable doors, environmental
controls, and backup power supplies.
- Control direct access to the
device - This includes lockable racks and password protection to
console and auxiliary ports. You may want to disable ports that
are not being used.
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Lab
Activity |
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In
this lab activity, you will learn how to use
local switch security for controlled user
access. |
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