What is Spam2.0

I bumped into a new jargon "Spam2.0" or "Spam 2.0" recently.

After some research, I found out the word "Spam2.0" or "Spam 2.0" is originated from a post on Official Google WebMaster Center Blog by Jason Morrison, a member of Search Quality Team today. There is no google product called "Spam2.0" or "Spam 2.0" so far. The author seems to refer to spam targeting Web2.0 websites as "Spam2.0" or "Spam 2.0".

original post.

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What is spam hunting

A favorite sport among many people is spammer hunting. It begins when you receive a piece of spam in the mail. Instead of deleting it, spam hunters track down who sent it, and take action, usually resulting in a loss of account for the spammer.

To find out the spam source, check out the Whois database.

If the address is hosted at a legitimate provider such as yahoo, google, they usually have a team to address violation of their terms of usage such as spamming, and you can fill the response forms at their web site to report the problem. They will often close the account.

If the address is part of a larger site like a community home page site, then you can complain to that site's administrators -- they will often close the user's account.


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What is dictionary attack

Dictionary attack is an old cracker's trick aiming for vulnerable e-mail servers such as Hotmail and MSN servers. The cracker utilizes software that opens a connection to the mail server and then automatically submits random e-mail addresses. Many of these addresses are similar, such as "JONATHANjm8q631rj7ROSENBLATT@hotmail.com" and "JONATHANjm8q631rj8ROSENBLATT@hotmail.com." The software then records which addresses are "live" and adds the addresses to the spammer's list. Many mail server nowadays protected against dictinary attack.

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What is Virtue LAN?

Monday

thursday

In the previous post, we have talked about LAN (local area network), which is
computer network covering a small physical area. The LAN we talked about is made of physical devices such as computer, hub, switch, router, repeater which hurt if dropping on your feet. So.... what the heck is a "virtual LAN"? The name seems to suggest some kind of imaginary network... Ok, forget about the god-knows-who Virtue LAN for now, let's talk about a roommates crisis recently.

Charlse, Tony, Kelley and Alice are roommates. Their computers are connected together by a switch, thus form a home LAN. By default, if one computer in the LAN send a message, the switch will broadcast the message to all the other three computers.
At Wenesday night, Tony did a stupid thing, Kelley and Alice became so angry at him that they even refuse to share the LAN with this guy. As Tony's best friend, Charlse decided to stood with him. So the roommates reconfigured the switch. Now, There are two groups: group 1 -- Charlse and Tony; group 2 -- Alice and Kelley. The message from either Tony's or Charlse's computer will not be passed to Alice's and Kelley's. The same thing happened at the girls side, the girls' messages now only broadcast between girls. As a result, we get two VLAN, physically, they share the same LAN, but logically, when a member of one VLAN sends a broadcast, only the other members of the same VLAN will receive the broadcast.

By the way, at Friday, all the roommates agreed that it's a sick example of VLAN, so they set the switches back to the default value thus wiped out the poor VLANs from the face of the earth.

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What are Internet made of? (LAN, ISP, POP, NAP)

People talk about LAN, ISP, POP, NAP, what are they talking about?

LAN, ISP, POP, NAP

Every computer that is connected to the Internet is part of a network, even the one in your home. For example, you may use a modem and dial a local number to connect to an Internet Service Provider (ISP). At work, you may be part of a local area network (LAN), but you most likely still connect to the Internet using an ISP that your company has contracted with. When you connect to your ISP, you become part of their network. The ISP may then connect to a larger network and become part of their network. The Internet is simply a network of networks.
Most large communications companies have their own dedicated backbones connecting various regions. In each region, the company has a Point of Presence (POP). The POP is a place for local users to access the company's network, often through a local phone number or dedicated line. The amazing thing here is that there is no overall controlling network. Instead, there are several high-level networks connecting to each other through (Network Access Points) NAPs.
Today's Take home:

LAN (local area network):
Computer network covering a small physical area, like your home, office, or a few buildings, such as a school, or an airport.

ISP (internet service provider):
The company that sells Internet access plan to you (their typical slogan: fast internet connetion...blablabla...)

POP (point of presence):
an access point from one place to the rest of the Internet. A phrase only matters to the ISP sells guy. Your Internet service provider (ISP) has a point-of-presence on the Internet and probably more than one. The number of POPs that an ISP has is sometimes used as a measure of its size or growth rate.

NAP (network access points):
Short for network access point, a public network exchange facility where Internet Service Providers (ISPs) can connect with one another in peering arrangements. The NAPs are a key component of the Internet backbone because the connections within them determine how traffic is routed. They are also the points of most Internet congestion.


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