Cisco Cisco IOS Software Release 12.4(23)

The security objectives are a high-level statement of the intended response to the security problem. 
These objectives indicate how the security problem, as characterized in the “Security Environment” 
section of the ST (see the section “

”), is to be addressed. 

 describes security objectives for the TOE, while 

 describes objectives for the 

environment.

O.Authenticity

The TOE must provide the means for ensuring 
that a packet flow has been received from a trusted 
source.

O.Confidentiality

The TOE must protect the confidentiality of 
packet flows transmitted to/from the TOE over an 
untrusted network.

O.Integrity

The TOE must ensure that any attempt to corrupt 
or modify a packet flow transmitted to/from the 
TOE is detected.

O.Key-Confidentiality

The TOE must provide the means of protecting 
the confidentiality of cryptographic keys when 
they are used to encrypt/decrypt packet flows 
between instances of the TOE and when kept in 
short and long-term storage.

O.NoReplay

The TOE must provide a means to detect that a 
packet flow transmitted to the TOE has not been 
copied by an eavesdropper and retransmitted to 
the TOE.

O.Secure-Operation

The TOE must prevent unauthorized changes to 
its configuration.