RBL
Short for Realtime Blackhole List, a list of IP addresses whose owners refuse to stop the proliferation of spam. The RBL usually lists server IP addresses from ISPswhose customers are responsible for the spam and from ISPs whose servers are hijacked for spam relay.
As subscribers to the RBL, ISPs and companies will know from which IP addresses to block traffic. Most traffic blocking occurs during the SMTP connection phase. The receiving end will check the RBL for the connecting IP address. If the IP address matches one on the list, then the connection gets dropped before accepting any traffic from the spammer. Some ISPs, though, will choose to blackhole (or ignore) IP packets at their routers. The goal here is to block all IP traffic.
It is important to note that all e-mail and packet blocking is done by the recipient, not the RBL administrator, which is only responsible for bouncing spam that is directed at its servers.
The RBL was created by Mail Abuse Prevention System (MAPS) LLC., but there are other entities that keep RBLs aside from MAPS.
Read Also:
- RC4/RC5/RC6
A series of symmetric encryption algorithms developed by RSA Security. RC4 — a variable key-size stream cipher with byte-oriented operations. The algorithm is based on the use of a random permutation. RC5 — a parameterized algorithm with a variable block size, a variable key size, and a variable number of rounds. Allowable choices for the […]
- RCA cable
A standard type of cable used to transmit analog audio and composite-video signals between devices such as televisions, satellite or cable receivers, VCRs, game console systems, speakers and more. Typical RCA cables will have two or three color coded connectors. RCA audio cables have two connectors: red (right stereo) and white or black for left […]
- Relational Database Management System RDBMS
Short for relational database management system and pronounced as separate letters, a type of database management system (DBMS) that stores data in the form of related tables. Relational databases are powerful because they require few assumptions about how data is related or how it will be extracted from the database. As a result, the same […]
- RDF - Resource Description Framework
RDF is short for Resource Description Framework. RDF is a general framework for describing website metadata, or “information about the information” on the website. It provides interoperability between applications that exchange machine-understandable information on the Web. RDF details information such as a site’s sitemap, the dates of when updates were made, keywords that search engineslook […]
- RDFPic
While RDF is a general framework for describing a Web site’s metadata, RDFPic is a tool developed by the W3C that authors can use to embed RDF metadata inside JPEG images. Using RDFPic authors see a side-by-side view of the image and a text form where you input data entry. RDFPic is copyrighted by the […]