and to move files from one machine to another. It provides strong authentication and secure communications over insecure channels. It is a replacement for rlogin, rsh, rcp, and rdist. SSH protects a network from attacks such as IP spoofing, IP source routing, and DNS spoofing. An attacker who has managed to take over a network can only force ssh to disconnect. He or she cannot play back the traffic or hijack the connection when encryption is enabled. When using ssh's slogin (instead of rlogin) the
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How do protective isolations help to protect a network? Why do we need to separate and isolate the types of traffic? Ingress filtering is the filtering of any IP packets with untrusted source addresses before they have a chance to enter and affect your system or network. It can protect users from malicious attacks based on spoofing, where a hacker attempts to make a packet look like it originated from somewhere else. Internet service providers (ISPs) typically use ingress filtering to defend
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Basic steps to get you cracking WEP (for scriptkiddies) Once you got your tools ready it is time to get cracking. Routers especially those given out by our local ISP have their default security settings set to WEP to encrypt their traffic. This can be easily cracked by aircrack-ng suite in about 5 min once you are “au fait” with the setup. For those who want to jump straight into the cracking process here are the basic steps you need to take. Step 0: Spoof MAC address Open terminal and
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important in business, as you would not want purchase orders containing item numbers, amounts or billing information of customers to be changed. IP Address Spoofing (Identity Spoofing) is when an attacker steals your IP Address. Most networks use the IP address of a computer to identify it as valid. An attacker could then use special programs to construct IP packets that would appear to come from valid addresses within the intranet of
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Identifying Potential Malicious Attacks, Threats and Vulnerabilities Joseph Escueta Strayer University CIS 333 Dr. Emmanuel Nyeanchi January 30, 2014 Abstract The world of any organization lays a network structure that controls all the operations of the company. Every company has its own sensitive information about their success and why they such a good reputation. Because of the growing technology various enchantments have been develop to make sure that its investments are secured
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Part 1 - How do you get caught? Your PC will send a request to websites you visit asking the website to return a page to you. Your IP address is contained within that request. All IP addresses across the globe are assigned to organisations by region registries. In other words, if you are using a Virgin Cable internet connection, your IP is associated to Virgin Cable. Therefore, if you commit something illegal on a website, the website and the authorities will know to contact Virgin Cable to request
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Running Head: PERFORM A FORENSICS ANALYSIS OF A NETWORK BREAK-IN Perform a Forensics Analysis of a Network Break-in Tiffany McGarr IT540-02: Management of Information Security Dr. Flick January 10, 2014 Table of Contents Abstract……………………………………………………………………………………………3 Part One: Screen Shots for OSForensics………………………………………………………………….4&5 Part Two: What servers were compromised?...............................................................................
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attack application level session. TCP/IP Hijacking – spoofs packets to take over a connection between a victim and a target machine. The hacker is able to communicate with the host’s machine as if the attacker is the victim when the connection hangs. One-time passwords can be easily attacked through this technique. IP Spoofing – Allows attackers to create their won acceptable packets tio insert in the TCP session. Attacker spoofs the trusted host’s IP. Then, the hijacker alters the sequence
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learning as much as possible about the target. Hackers usually perform an initial reconnaissance and probing scan to identify IP hosts, open ports, and services enabled on servers and workstations. In this lab, students planned an attack on 172.30.0.0/24 where the VM server farm resides. Using Zenmap GUI, students then performed a “Ping Scan” or “Quick Scan” on the targeted IP subnetwork. Lab Assessment Questions & Answers 1. Name at least five applications and tools pre-loaded on the TargetWindows01
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Standard ACLs Filter based on source IP address. Extended ACLs Filter based on source + destination IP address. Filter based on protocol and port information. Time-based ACLs Filter based on date and time. Context-based ACLs Stateful packet filtering with dynamic ACLs Numeric Range | Access List Type | 1-99 | Standard ACLs | 100-199 | Extended ACLs | 200-299 | Ethernet Type Code | 700-799 | Transparent Bridging | 1100-1199 | Extended Transparent | 1300-1999 | Standard ACLs |
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