What is Xmas Day attack in cyber security?

What is Xmas Day attack in cyber security?

A Christmas Tree Attack is a very well known attack that is designed to send a very specifically crafted TCP packet to a device on the network. This crafting of the packet is one that turns on a bunch of flags. There is some space set up in the TCP header, called flags.

What flags are used in the Xmas tree scan?

Xmas scans derive their name from the set of flags that are turned on within a packet. These scans are designed to manipulate the PSH, URG and FIN flags of the TCP header. When viewed within Wireshark, we can see that alternating bits are enabled, or “Blinking,” much like you would light up a Christmas tree.

How does a Xmas attack work?

An adversary uses a TCP XMAS scan to determine if ports are closed on the target machine. This scan type is accomplished by sending TCP segments with all possible flags set in the packet header, generating packets that are illegal based on RFC 793.

What is a Christmas tree scan?

Christmas tree packets can be used as a method of TCP/IP stack fingerprinting, exposing the underlying nature of a TCP/IP stack by sending the packets and then awaiting and analyzing the responses. When used as part of scanning a system, the TCP header of a Christmas tree packet has the flags FIN, URG and PSH set.

What is the primary objective of spoof attack?

Usually, the main goal of spoofing is to access personal information, steal money, bypass network access controls or spread malware through infected attachments or links. With every form of communication online, scammers will try to use spoofing to try to steal your identity and assets.

How does ping of death attack work?

A Ping of death (PoD) attack is a denial-of-service (DoS) attack, in which the attacker aims to disrupt a targeted machine by sending a packet larger than the maximum allowable size, causing the target machine to freeze or crash.

What flags are not set in a XMAS scan?

Sets just the TCP FIN bit. Xmas scan ( -sX ) Sets the FIN, PSH, and URG flags, lighting the packet up like a Christmas tree. These three scan types are exactly the same in behavior except for the TCP flags set in probe packets.

How do I stop idle scanning?


  1. Don’t put a public host in front of your firewall that uses a predictable IPID sequence.
  2. Use a firewall that can maintain state-on connections, determine whether someone initiated a phony session request, and drop those packets without a target host response.

What is the difference between XMAS scan null scan and FIN scan?

FIN A FIN scan is similar to an XMAS scan but sends a packet with just the FIN flag set. FIN scans receive the same response and have the same limitations as XMAS scans. NULL – A NULL scan is also similar to XMAS and FIN in its limitations and response, but it just sends a packet with no flags set.

What is difference between spoofing and phishing?

Boiled down: phishing aims to take hold of personal information by convincing the user to provide it directly; spoofing aims to steal or disguise an identity so malicious activity can ensue. Both employ a level of disguise and misrepresentation, so it is easy to see why they are so closely paired.

What to do in case of Christmas tree attack?

In the case of a Christmas tree attack, we’re turning on the Urgent, the Push, and the Fin flags. And you can see, here’s an example of a screenshot of Wireshark, where Urgent is set. The Fin is set. And Push is set.

Do you have to do a Christmas tree scan?

I may not have to do it for Christmas tree scan, but it’s become a standard thing that I do when I run an Nmap scan. The flags to perform a Christmas tree scan is the flag-s and a capital X. And that’s the Christmas tree. That’s the scan for Christmas tree. And I’m going to do it to, which is my router.

What kind of defenses can detect an Xmas scan?

What defenses can detect an Xmas scan?: Stateless firewalls vs Stateful firewalls: Stateless or non-stateful firewalls carry out policies according to the traffic source, destination, ports and similar rules ignoring the TCP stack or Protocol datagram.

What are the flags for a Xmas scan?

Xmas scan (-sX) Sets the FIN, PSH, and URG flags, lighting the packet up like a Christmas tree. These three scan types are exactly the same in behavior except for the TCP flags set in probe packets. Responses are treated as shown in Table 5.4.