dns spoofing attack

In the previous article (man-in-the-middle attack ARP poisoning), we discussed dangerous hacker attacks and practical ARP poisoning principles. In this article, I will first discuss how to detect and prevent ARP poisoning (or ARP spoofing) attacks, and then I will review other man-in-the-middle attacks-DNS spoofing.ARP cache attacks are very dangerous. It is impo

Domain Name Server authorized by baidu.com to the local DNS server. The local DNS server continues to initiate a query to baidu.com to obtain the IP address of www.baidu.com. After obtaining the IP address corresponding to www.baidu.com, the local DNS server transmits the IP address to the user in the form of a dns re

the word difference is a lot. 2.Juniper also agreed with our research: "Juniper first entered the Ministry of Science and Technology of China, said Lin Jing, according to the certificate provided by Alibaba technology and so on this (12) Day, the mysterious website attack may occur on the route 210.65.20.241 to 211.22.33.225, but the router of the medium Telecom may be specified) the mobility or intrusion capability is not high. 」 We didn't say it wa

www.google.com, it will tell you 172.50.50.50, which is where the attacker's server is! Now attackers can do whatever they want, such as hanging horses or something ...... Of course, this also caused considerable losses to Google!B) DNS ID spoofing (DNS ID spoofing)We can see that when Host X wants to contact host y,

is! Now attackers can do whatever they want, such as hanging horses or something ...... Of course, this also caused considerable losses to google!B) DNS ID Spoofing (DNS ID Spoofing)We can see that when Host X wants to contact host Y, it requires a recent IP address. However, in most cases, X only has the Y name. In t

, if you ask your DNS server about Www.google.com It will tell you 172.50.50.50, which is where the attacker's server is! Now attackers can do whatever they want, such as hanging horses or something ...... Of course, this also caused considerable losses to Google!B) DNS ID spoofing (DNS ID

the essence of DNS ID spoofing. How can we achieve this? There are two cases:1. the local host and DNS server, both the local host and the client host are not in the same LAN. The methods are as follows: a large number of DNS response data packets are randomly sent to the client host, with a low hit rate; it is too ru

secure. Anyone can organize an attack to obtain this ID. For example, if you use LAN, someone else can use the sniffer to capture your request ID, and then forge a reply according to this ID ...... However, the information contains the IP address selected by the attacker. If not identified, X considers the IP address provided by the attacker as Y.By the way, DNS requests depend on UDP (TCP is used only whe

Author: Article Source: http://www.h4h4.com Release date: Click: 5717 Font family: [small, medium, and large] DNS Spoofing is a very complex attack method. However, it is easier to use than IP spoofing, so it is also common. The most recent case of attacks using DNS

a response datagram to the client, then the client's DNS cache in the domain name corresponding to the IP is our custom IP, and the client is also taken to the site we want. There's only one condition, and that's the ID that we send the DSN response datagram arrives at the client before the response datagram sent by the DNS server. The following figure clearly shows the process of

network system and detects this spoofing service, it can also redirect all network traffic of the scanner to spoofing, the subsequent remote access becomes the continuation of this deception. From the protection effect, placing network services on all these IP addresses will undoubtedly increase the workload of intruders, because they need to decide which services are real, which services are forged, espec

does not query this record, but directly returns the information obtained when 2.74.222.38.in-ADDR. Arpa is queried and the information in the cache exists:98.76.54.32-> 123.45.67.89 [query]Nqy: 1 NAN: 1 NNS: 2 NADINE: 2QY: trusted.host.comAn: trusted.host.com A 38.222.74.2NS: 74.222.38.in-ADDR. Arpa NS ns.sventech.comNS: 74.222.38.in-ADDR. Arpa NS ns1.sventech.comAD: ns.sventech.com A 38.222.74.2AD: ns1.sventech.com A 38.222.74.10Now the unix host thinks 38.222.74.2 is the real trusted.host.co

computer system. Figure 1: IP spoofingSee the above figure. two computers, victim and partner, were communicating with each other. in the meantime, a sender (the attacker) also tries to communicate with the victim by forging the IP address and tries to fool the victim with the fake IP address of the partner. so the victim computer thinks that the packets came from the partner computer while we can see the original sender is the sender system which in this case is the attacker. the term

A DHCP spoofing attack, also known as a DHCP exhaustion attack, is a type of DDoS attack that causes the DHCP server to have no assignable DHCP address and causes the DHCP address pool to dry up. So that there is no assignable IP address for the normal host within the network. At the same time, hackers take advantage o

DNS domain name spoofing. I believe many of my friends have heard of it, and I often hear that some websites have been attacked by DNS spoofing, so that the websites cannot be browsed by users, so is it true that xx big station has been intruded? In fact, this is not the case. Their website is not truly intruded, but t

crash or refuse services. The other attack is not targeted at the DNS server, instead, the DNS server is used as the "attack amplifier" in the middle to attack other hosts on the internet, resulting in DoS attacks. 4) DNS

Transferred from: http://www.cnblogs.com/hkleak/p/5043063.htmlNote One: What is Ettercap?We use the two tools of Cain and Netfuke when it comes to web security detection, and the functionality is believed to be known to a few friends, but these two tools run under Windows.And Ettercap is running under Linux. In fact, the function is almost the same, I call it a sniffer tool, ARP spoofing, DNS, hijacking, in

Recently, my website suddenly experienced slow access, and the anti-virus software immediately prompts that the website contains a trojan virus. I was wondering how virus prompts appeared recently when my website has been running well for four years. For reasons of professional habitsSource codeView, originally in the web page sourceCodeThe Program...... According to common sense, my heart is cold: it is estimated that the server is attacked, and all the file code is added with this code,

on the hacked computer with a Chrome browser, and Chrome gave me a warning about douban, and I clicked on.In Cain, my Douban username and password are displayed in clear text!This illustrates two issues:1.ARP spoofing can be found, and chrome gives a warning message.2. Quite a few websites use plaintext to transfer passwords. A while ago, I saw in the discussion that many large websites in the country, the issue of the plaintext transmission of passw

Recently my site suddenly appeared to be slow to visit, and after opening antivirus software immediately hint contains Trojan virus. I am very puzzled, the website that has been running for 4 years has been good recently how to appear virus hint. Professional reasons to open the site's source code to view, originally in the source of the Web page of the head was added to the According to the common sense of my heart a cold: estimated that the server was captured, all the file code was added th