Inside network perimeter security / 
Stephen Northcutt ... [et al.] 
 - 2nd ed. 
 - Indianapolis, Ind. :  SAMS Publ.,  2005 
 - 734 p. :  ill. ;  23 cm 
<br/><br/><label>ISBN: </label>0672327376 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures