Ettercap Cheat Sheet

[Lotte Donohoe]

Ettercap is a security analysis tool that emulates a \u201cman in the middle\u201d attack to detect system vulnerabilities. The service deploys techniques such as ARP poisoning and password decryption to capture traffic and insert fake responses into the stream. It can also be used for DoS attacks.\n","author":"@type":"Person","name":"Stephen Cooper","description":"Stephen Cooper has taken a close interest in online security since his thesis on Internet encryption in the early 90s. That formed part of his BSC (Hons) in Computing and Informatics at the University of Plymouth. In those days, encapsulation techniques were just being formulated and Cooper kept an eye on those methodologies as they evolved into the VPN industry. Cooper went on to study an MSC in Advanced Manufacturing Systems and Kingston University. He also holds an MSc Advanced Security and Digital Forensics from Edinburgh Napier University.\nCooper worked as a technical consultant, sitting DBA exams and specializing in Oracle Applications. With a long experience as a programmer, Cooper is able to assess systems by breaking into programs and combing through the code. Knowledge of IT development and operations working practices helps him to focus his reviews on the attributes of software that are really important to IT professionals.\nAfter working as an IT consultant across Europe and the USA, he has become adept at explaining complicated technology in everyday terms. He is a people person with an interest in technology\n","url":"https:\/\/www.comparitech.com\/author\/"}},"@type":"Question","name":"Is Ettercap a sniffer?","answerCount":1,"acceptedAnswer":"@type":"Answer","text":"Ettercap was originally designed to be a packet sniffer and that function is still at the heart of the tool. Think of Ettercap as a packet sniffer with added functions. Those extra functions are now considered to be the main reason to use Ettercdap \u2013 for network attacks or penetration testing.\n","author":"@type":"Person","name":"Stephen Cooper","description":"Stephen Cooper has taken a close interest in online security since his thesis on Internet encryption in the early 90s. That formed part of his BSC (Hons) in Computing and Informatics at the University of Plymouth. In those days, encapsulation techniques were just being formulated and Cooper kept an eye on those methodologies as they evolved into the VPN industry. Cooper went on to study an MSC in Advanced Manufacturing Systems and Kingston University. He also holds an MSc Advanced Security and Digital Forensics from Edinburgh Napier University.\nCooper worked as a technical consultant, sitting DBA exams and specializing in Oracle Applications. With a long experience as a programmer, Cooper is able to assess systems by breaking into programs and combing through the code. Knowledge of IT development and operations working practices helps him to focus his reviews on the attributes of software that are really important to IT professionals.\nAfter working as an IT consultant across Europe and the USA, he has become adept at explaining complicated technology in everyday terms. He is a people person with an interest in technology\n","url":"https:\/\/www.comparitech.com\/author\/","@type":"Question","name":"What is ARP spoofing vs ARP poisoning?","answerCount":1,"acceptedAnswer":"@type":"Answer","text":"ARP Spoofing and ARP Poisoning are used to mean the same thing, which is altering address resolution protocol records. \u201cSpoofing\u201d means impersonating, so ARP spoofing means representing a computer with the IP address that was originally assigned to another computer\u2019s MAC address. In the interest of thoroughness, this should also include altering the relevant ARP record. \u201cPoisoning\u201d means corrupting the ARP table. It is possible to implement spoofing without poisoning. However, this relies on the tricked computer not checking ARP tables, so it is better to implement poisoning as well.\n","author":"@type":"Person","name":"Stephen Cooper","description":"Stephen Cooper has taken a close interest in online security since his thesis on Internet encryption in the early 90s. That formed part of his BSC (Hons) in Computing and Informatics at the University of Plymouth. In those days, encapsulation techniques were just being formulated and Cooper kept an eye on those methodologies as they evolved into the VPN industry. Cooper went on to study an MSC in Advanced Manufacturing Systems and Kingston University. He also holds an MSc Advanced Security and Digital Forensics from Edinburgh Napier University.\nCooper worked as a technical consultant, sitting DBA exams and specializing in Oracle Applications. With a long experience as a programmer, Cooper is able to assess systems by breaking into programs and combing through the code. Knowledge of IT development and operations working practices helps him to focus his reviews on the attributes of software that are really important to IT professionals.\nAfter working as an IT consultant across Europe and the USA, he has become adept at explaining complicated technology in everyday terms. He is a people person with an interest in technology\n","url":"https:\/\/www.comparitech.com\/author\/"]} "@context":"http:\/\/schema.org","@type":"BreadcrumbList","itemListElement":["@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.comparitech.com\/","@type":"ListItem","position":2,"name":"Net Admin","item":"https:\/\/www.comparitech.com\/net-admin\/","@type":"ListItem","position":3,"name":"Ettercap Cheat Sheet","item":"https:\/\/www.comparitech.com\/net-admin\/ettercap-cheat-sheet\/"]Net AdminEttercap Cheat Sheet We are funded by our readers and may receive a commission when you buy using links on our site. Ettercap Cheat Sheet Ettercap can be used by hackers to attack a network or by network administrators to defend it. Find out about this pen-testing tool. Writer: Stephen Cooper Networking and Cyber Security Specialist Updated: September 15, 2023 body.single .section.main-content.sidebar-active .col.grid-item.sidebar.span_1_of_3 float: right; body.single .section.main-content.sidebar-active .col.grid-item.content.span_2_of_3 margin-left: 0;

Ettercap is a free, open-source tool that can be used for man-in-the-middle attacks on networks. As such, it can be a threat to network security. However, network administrators need to be aware of this tool to check the vulnerabilities of their systems.

It is a packet capture tool that can write packets back onto the network. Thus, data streams can be diverted and altered on the fly. The system can also be used for protocol analysis to analyze network traffic and work out which applications generate the most traffic.

There is a GUI interface for Ettercap, and it is also possible to use Ettercap at the command line. However, the interface is not so hot. Moreover, given the high standard of network monitoring tools that network administrators are used to nowadays, it is unlikely that you would get Ettercap to perform network traffic analysis.

The release notes state that the Ettercap can be installed on Windows, but this implementation is not supported. There is a second version of Ettercap that is available for 32-bit systems running Windows. The Windows version mentioned by the developers are:

The latest version of the Windows-compatible package for Ettercap available on SourceForge was posted in December 2011. Unfortunately, this is very old, and user feedback reports that the system crashes frequently.

In a man-in-the-middle attack, each side in a network conversation thinks they are exchanging data with each other but communicating with the hacker. For example, a connects to B, but the hacker intercepts the connection request and responds to A, pretending to be B. Optionally, at the same time, the hacker might connect to B, pretending to be A. This second connection would be necessary to extract data from B that will enable the hacker to convince A that it is connected to B.

Click on Sniff in the top menu and then select Unified Sniffing from the drop-down menu. You will see an Ettercap Input dialog box. Select the network interface that is on the same network as the target computer and press OK.

Click on the Hosts option on the top menu and select Scan for hosts from the drop-down menu. Next, click on the Hosts option again and choose Hosts List. This will show you the other devices connected to the network. First, you need to work out which of these is your target computer.

Click on the MITM option on the top menu and then on ARP poisoning. In the dialog box that appears, select Sniff remote connections and then click on OK. Next, click on the Start option in the top menu and then choose Start Sniffing. This remaps the IP address of the router to your computer. The Ettercap system will forward the traffic to the actual router and channel responses back to the target.

To hijack traffic between a target and an external website to perform a man-in-the-middle attack, you can use DNS spoofing. The domain name system cross-references Web domain names with the actual IP addresses of the servers that host the pages for that site. Therefore, updating a local DNS server to give your IP address for a domain will enable you to capture traffic to and from that site.

Click on Plugins in the top menu and then select Manage the plugins from the drop-down menu. This will open a new tab in the interface and list all available plugins. Scan the list and find dns_spoof. Double-click on this line to activate the service. This means that you etter.dns becomes the local DNS server for the victim computers you have in your Target 1 hosts list.

Skip to the section that says # if you use iptables and remove the comment hash from the front of the two redir lines. These downgrade SSL connections to unprotected HTTP. Save the file.

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