What attacks can you successfully launch against a server using the above technique? If the source IP address is used for authentication, then the attacker can use the one-sided communication to break into the server. The attack doesn't see the SYN-ACK (or any other packet) from the server, but can guess the correct responses. This sequence number is predictable the attack connects to a service first with its own IP address, records the sequence number chosen, and then opens a second connection from a forged IP address. Q2) After a client sends a connection request (SYN) packet to the server, the server will respond (SYN-ACK) with a sequence number of its choosing, which then must be acknowledged (ACK) by the client. Q1) What type of session hijacking attack is shown in the exhibit? Session hijacking could be dangerous, and therefore, there is a need for implementing strict countermeasures.A variety of tools exist to aid the attacker in perpetrating a session hijack.By attacking the network-level sessions, the attacker gathers some critical information that is used to attack the application-level sessions.Session hijacking can be active or passive in nature depending on the degree of involvement of the attacker.Successful session hijacking is difficult and is only possible when a number of factors are under the attacker's control.In a spoofing attack, the attacker pretends to be another user or machine to gain access.In session hijacking, an attacker relies on the legitimate user to connect and authenticate, and will then take over the session.
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