| Topic B |
| Blacklist |
Black list which is also known as “block list” refers the list of companies, websites or people who are engage in . Once detects that particular website is unprofessionally conducting resist crawling on next upcoming pages of that website. And hence that site is decleared as black listed website.
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| Actually all the websites try to optimize search engine to get top most position. Most of the websites adopt the permissible way of white listing. But few of them try to manupulate search engine. In this misconduct if they are caught by search engine spiders then search engine decleares those sites as black listed one. |
| Types of Blacklist |
| Black list is categorised in the given form |
1 Temperory black list
2 Permanent black list |
| Temperory black list |
| Temperory black listing is the short span of time for blocking the IP. If any web site is caught in this range then the IP of that website is immobilized or blocked for minimum duration (few hours). |
| Permanent black list |
| Permanent black listing is complete immobilization of particular IP. In such situation IP address or black listed site neither receive nor send any email to any site. |
| What is IP address ? |
| An IP (Internet Protocol address) address is the identity of the web site on the internet. It is like your “home address”which recommends your position on internet. |
IP is classified in two types as mentioned below.
1 Dynamic address
2 Fixed or Static address |
| Dynamic address |
| It is very difficult or immpossible to trap dynamic IP address because as many times you connect with internet it goes on changing that many times. It has resulted as a helping hand for spammers because it does not show any previous connectivity for the reason it is 100% disposable. |
| Fixed or Static address |
| Fixed IP addresses are maintained by the large companies, all web sites, and some individuals. They uphold position in the market. If they are trapped busy in the . All their efforts and tactics go in vain as they have to face the reputational loss. |
| Ban on IP address |
| always try to put to an end the spamming. If the web site or the company is black listed then they can not transect through email id. Because their IP is blocked that resist them from any sort of communication. also prohibit crawling web pages due to the ban on their uniqueness that is IP. Thus IP play an important role in black listing. |
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