A spoofing attack is a situation in which one person or program successfully masquerades as another by falsifying data and thereby gaining an illegitimate advantage

For Ex:
URL spoofing and phishing
In this attack, a legitimate web page such as a bank's site is reproduced in "look and feel" on another server under control of the attacker. The intent is to fool the users into thinking that they are connected to a trusted site, for instance to harvest user names and passwords.

So Tack care when you see the email in bank site look and feel


Thanks,
Rajinikanth

Spoofing attack also performed with the aid of URL spoofing, which exploits web browser bugs in order to display incorrect URLs in the browsers location bar; or with DNS cache poisoning in order to direct the user away from the legitimate site and to the fake one.

We have different spoofing such as
*Internet protocol spoofing
*URL spoofing
*Referer spoofing

- V.Vadivelan

IP Spoofing

Spoofing attacks differ from random scanning and other techniques used to ascertain holes in the system. Spoofing attacks occur only after a particular machine has been identified as vulnerable. By the time the cracker is ready to conduct a spoofing attack, he or she knows the target network is vulnerable and which machine is to be attacked.

IP spoofing attacks can be thwarted by configuring your network to reject packets from the Net that claim to originate from a local address (that is, reject packets that purport to have an address of a workstation on your internal network). This is most commonly done with a router.

Prevent IP Spoofing attacks
Routers work by applying filters on incoming packets; for example, they can block particular types of packets from reaching your network. Several companies specialize in these devices:

very interesting to learn about these kind of information.

thanks for the information Rajini

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Karpagarajan. R
Necessity is the mother of invention