  The rogue DHCP is unauthorized server that releases the incorrect IP address
to users and sniffs the traffic illegally. The contribution specially provides
privacy to users and enhances the security aspects of mobile supported
collaborative framework (MSCF) explained in [24].The paper introduces
multi-frame signature-cum anomaly-based intrusion detection systems (MSAIDS)
supported with novel algorithms and inclusion of new rules in existing IDS. The
major target of contribution is to detect the malicious attacks and blocks the
illegal activities of rogue DHCP server. This innovative security mechanism
reinforces the confidence of users, protects network from illicit intervention
and restore the privacy of users. Finally, the paper validates the idea through
simulation and compares the findings with known existing techniques.
