What is IP Address Spoofing?
IP address spoofing denotes the action of generating IP packets with fake source IP addresses in order to impersonate other systems or to protect the identity of the sender. Spoofing can also refer to forging or using fake headers on emails or netnews to – again – protect the identity of the sender and to mislead the receiver or the network as to the origin and validity of sent data.
IP address spoofing is a process that involves the creation of IP packets for the purpose of hiding the true identity of an email or file sender. While IP address spoofing does have some legitimate purposes, the process is more commonly employed as a means of harvesting personal information that makes it possible to use accounts and financial information without the permission of the owner. In general, spoofing is looked upon as unethical. Address spoofing makes use of basic Internet protocol to accomplish the task. Essentially, IP provides the foundation for the transmission of all types of data across the Internet, allowing the data to terminate on various types of computer networking equipment, such as servers. The data is identified with a source address as well as the destination address, in a manner that is similar to the use of a delivery address and return address on a letter mailed through a postal system. Obscuring that source address and substituting a fake or spoofed addres
In IP address spoofing, a malicious user conducts a one-sided session with his or her target. Suppose that John wants to pose as Jane and send a phony email via an SMTP mail server named \\Mail. It would be fairly easy for John to construct a series of packets that represent a valid mail session between Jane and \\Mail-that is, a series of packets which, if sent by Jane to \\Mail would cause it to send the desired email. All of the response packets from \\Mail would go to Jane, so John would be operating in the blind. However, SMTP sessions are fairly easily scripted, and this wouldn’t be a fatal problem. The chief problem for John is that he would need to provide valid sequence numbers on the packets, but \\Mail provides the initial sequence number as part of the session setup-which would be sent to Jane, not John. John must therefore guess at the initial sequence number. One way to do this is to start a session with \\Mail and immediately cancel it, simply as a way of determining the
IP address spoofing denotes the action of generating IP packets with fake source IP addresses in order to impersonate other systems or to protect the identity of the sender. Spoofing can also refer to forging or using fake headers on emails or netnews to – again – protect the identity of the sender and to mislead the receiver or the network as to the origin and validity of sent data. Basics of IP Address Spoofing The Internet Protocol or IP is the fundamental protocol for sending/receiving data over computer networks and the Internet. With the Internet protocol, each packet sent or received contains information relevant to the operation such as the source and the destination of the packet. With IP address spoofing, the information placed on the source field is not the actual source of the packet. By using a different address in the source field of the packet, the actual sender can make it look like the packet was sent by another computer and thus the response of the target computer wil
