SYN flood attempts are a type of Denial of Service (DoS) attack. They are designed to exploit the TCP handshake process by sending a large number of SYN packets to a target server, which can overwhelm the server's resources and prevent legitimate users from establishing a connection. The goal of a SYN flood is not to gain unauthorized access or gather information, but rather to disrupt the normal operation of a service, making it a Denial of Service attack.

NetStumbler is a Windows-based tool that is used for the detection of wireless LANs using the IEEE 802.11a,
802.11b, and 802.11g standards. The main features of NetStumbler are as follows:
It displays the signal strength of a wireless network, MAC address, SSID, channel details, etc.
It is commonly used for the following purposes:
a.War driving
b.Detecting unauthorized access points
c.Detecting causes of interference on a WLAN
d.WEP ICV error tracking
e.Making Graphs and Alarms on 802.11 Data, including Signal Strength
Answer option A is incorrect. Kismet is an IEEE 802.11 layer2 wireless network detector, sniffer, and intrusion
detection system.
Answer option C is incorrect. THC-Scan is a war-dialing tool.
Answer option B is incorrect. Absinthe is an automated SQL injection tool.

A packet filtering firewall operates at the network layer of the TCP/IP model. It analyzes the headers of IP packets, which include source and destination IP addresses, protocol information, and port numbers, to determine whether to allow or block the packets based on predefined rules and access control lists (ACLs). This type of firewall does not perform deep packet inspection but rather checks the packet headers against the ACLs to make decisions1234.

A stateful firewall is a firewall that keeps track of the state of network connections (such as TCP streams, UDP
communication) traveling across it. The firewall is programmed to distinguish legitimate packets for different
types of connections. Only packets matching a known connection state will be allowed by the firewall; others
will be rejected. Answer option B is incorrect. A stateless packet filter firewall allows direct connections from the
external network to hosts on the internal network and is included with router configuration software or with
Open Source operating systems.
Answer option C is incorrect. It applies security mechanisms when a TCP or UDP connection is established.
Answer option D is incorrect. An application gateway firewall applies security mechanisms to specific
applications, such as FTP and Telnet servers.