Investigation into preventing and mitigating Spam over Internet Telephony (SPIT) network threats with performance analysis

Abstract

Voice over Internet Protocol (VoIP) having an increment in demand due to its several advantages compared to a standard telephony Public Switch Telephone Network (PSTN). Since VoIP system use an Internet Protocol (IP) network, it is prone to be attacked by third party through a lot of ways and one of them is through spamming. Spam can be defined as an unsolicited bulk message sent from one internet user to the other purposely used to get confidential information without owner`s permission and since it occurs in VoIP system, it is called Spam over Internet Telephony (SPIT). This research paper concentrating on producing a solution to prevent and mitigate SPIT using Intrusion Detection System (IDS) with performance analysis. Kali Linux 2.0 will be used to illustrate the attack while Snort which is IDS software which utilize as a database that would monitor packet entering and leaving the system. The project successfully alerting end users or network administrators for any suspicious Session Initiation Protocol (SIP) that could contribute to the spreading of SPIT.