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IT Baseline Protection Manual - The Information Warfare Site

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Safeguard Catalogue - Hardware & Software Remarks<br />

____________________________________________________________________ .........................................<br />

S 4.11 Screening of PBX interfaces<br />

Initiation responsibility: PBX officer; <strong>IT</strong> Security Management<br />

Implementation responsibility: Administrators<br />

<strong>The</strong> interfaces of a PBX system, through which administration activities can<br />

be carried out, are points requiring protection. <strong>The</strong>refore, they should be<br />

specially shielded. Through unused or unprotected interfaces, unauthorised<br />

persons can, for instance, by using a laptop PC, manipulate the system. In<br />

such cases, password protection for a PBX operator's console or a PC gateway<br />

would be ineffective. <strong>The</strong>refore, the aim is to prevent such manipulation or, at<br />

least, to provide for detection of an attempt to this effect. For this reason, the<br />

used interfaces should be tightly screwed and possibly sealed as well. Unused<br />

interfaces can be secured by screws and sealed cover plates.<br />

Additional controls:<br />

- Are all interfaces known through which your PBX can be configured?<br />

- Are there any PBX interfaces which can be freely accessed?<br />

- Have the existing connecting cables been mechanically secured at both<br />

ends?<br />

____________________________________________________________________ .........................................<br />

<strong>IT</strong>-<strong>Baseline</strong> <strong>Protection</strong> <strong>Manual</strong>: Oktober 2000

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