Abstract: As the technology is advancing the communication medium is also changing. The wired medium of communication is getting transformed into wireless technology. One of the main wireless technologies used today is mobile ad-hoc networks (MANETS). One of the main issues is the security. Blackhole is one of the major attacks on the MANETS. This paper provides a survey how the blackhole attack is resisted using various protocols.

Keywords: MANETS, AODV, Malicious, Blackhole resisting mechanism.