What is sniffing?
Wiretapping is a process of monitoring the telephone and internet conversations by a third party attackers connect a hardware or software or combination of both to the switch carrying information between two phones or hosts on the internet. Types of wire taping 1. Active wire taping : It only monitors, records the traffic (silently) and also alters the traffic. 2. Passive wire taping : It only monitors and records the traffic. Sniffing attacks are vulnerable to following protocols. 1. Telnet 2. FTP 3.SMTP 4. HTTP 5. POP3 6. NTP 7. IMAP 8. SNMP 9. RDP In network sniffing attacks are mostly done on data link layer and network layer of OSI reference model based switches Recommended sniffing tool is Wireshark. Wireshark is available for both windows and Linux , it is the best tool for sniffing and it's absolutely free . You can download Wireshark from their official site Wireshark download . Session Hijack