Telecommunication management :network security/ 
The national computing centre limited. 
 - Boston:  Wiley,  1992. 
 - xvi,189 p. :  ol. bill.;  28 cm 
<br/><br/><label>ISBN: </label>0850128420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Network Security<br/>Computer networks—Security measures<br/>Computer Network Management<br/>Cybersecurity
<br/><br/><label>Dewey Class. No.: </label>621.384