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1. MAC ADDRESS FLOODING ATTACK PDF HOW TO
2. MAC ADDRESS FLOODING ATTACK PDF INSTALL
3. MAC ADDRESS FLOODING ATTACK PDF FULL
4. MAC ADDRESS FLOODING ATTACK PDF CODE

In the code I defined srcList Used to store forged IP Address, And then we define a loop, The function is to change the source port every time a packet is sent, You can see in the construction TCP We added a parameter to the packet sport, The port number changed in the loop is given to sport This parameter. TcpLayer = TCP(sport=sPort, dport=dPort,flags="S") We've constructed it before SYN Data packets, Now we need to implement random forgery sources IP Address 、 And send the data to the target host through different source ports SYN Data packets : import random

MAC ADDRESS FLOODING ATTACK PDF HOW TO

Now we're going to use Python In the form of a third party Library Scapy, How to use it and how to use it interactively Shell In the same way, Be careful ： Lead before use Scapy My bag ： from scapy.all import as for Scapy More detailed usage of, Take a look at the official documents, You'll find out Scapy The power of. So far we have written SYN Flood attack I have already introduced all the basic knowledge of, That's enough knowledge for us to complete this experiment. A very short instruction is enough to create a fake source IP Address of the SYN Data packets, Is it simple ？Ĭonstructed the packets we wanted, Now we send it out ： pkt = IP(src="202.121.0.12",dst="192.168.0.100")/TCP(dport=80,flags="S") flags We set the value of S, That means we're sending SYN Data packets. IP We specify the source address in the package src And destination address dst, among src It's our fake address, And of course this is also DoS One way to protect an attacker in an attack. We constructed a IP Bao He TCP Package them and combine them into one, So there is a complete TCP Data packets, Otherwise, it can't be sent out. You can see Scapy It's very easy to construct a packet, Let's look at how to construct SYN Data packets ： IP(src="202.121.0.12",dst="192.168.0.100")/TCP(dport=80,flags="S") Now let's use Scapy Construct a simple packet to see ： pkt = IP(dst="192.168.0.100")

MAC ADDRESS FLOODING ATTACK PDF INSTALL

In addition, some warning messages will appear when running, We didn't use the relevant functions in this experiment, so we don't need to worry about it, You need to install the corresponding dependency package.

Here we need to pay attention to ： Scapy Sending a packet requires root jurisdiction, So here we add sudo. In the experimental environment Scap圓k: sudo pip3 install scapy-python3 I can't wait to see you Scapy The power of ？ Scapy It's a stand-alone program that can also act as Python Third party libraries using. It is widely used in network attack and penetration testing. Can be used to send 、 Sniffing 、 Parsing and falsifying network packets. Scapy Is a powerful interactive packet handler. Scap圓k In fact, that is Scapy Of Python3 edition, I'll call it for short Scapy. This will continue to consume server resources, until Denial of service.

If an attacker uses this time to send a large number of connection requests, All hung up in Half connected state. Because the server is processing TCP When asked, A buffer will be left in the protocol stack to store the handshake process, Of course, if the message from the client is not received within a certain period of time, The data stored in the protocol stack of this connection will be discarded. Īnd SYN Flood attack The client sends to the server SYN message After that, it will no longer respond to the message responded by the server. Under normal circumstances, the client first sends SYN message, Then the server returns to SYN+ACK The message arrives at the client, Finally, the client sends ACK Message completes three handshakes. We all know how to build Tcp The connection requires three handshakes.

MAC ADDRESS FLOODING ATTACK PDF FULL

By sending a lot of fake Tcp Connection request, Make the attacked host run out of resources ( Usually CPU Full load or out of memory ) How to attack. SYN Flood attack (SYN Flood) Is a more commonly used DoS One way. The following parts are arranged from Baidu Encyclopedia 、360 Encyclopedia and Scap圓k Official documents ：