Cyber Security Essentials

164 Cyber seCurity essentiAls

but they range from the service provider creating upstream ACL rules

or black holing source networks via BGP routes, to a systems adminis-

trator replacing a server with a hot spare to mitigate a DoS.

Every day, DoS attacks cause outages across the Internet. e

increase of botnet prevalence and release of application vulner-

abilities make DoS incidents inevitable. DoS conditions spawn

from everything from unintentional actions such as configuration

changes, to intentional motives, to attacks on opposing political

groups or competition, or they can act as a decoy for other malicious

intentions. Regardless of the cause of the outage, careful planning

can reduce the impact of such an outage and minimize the financia ...