TCP/IP download RFC

https://www.ietf.org

RFC是免費提供的

The ISO 27000 Directory

http://www.27000.org/

The ISO 27000 series of standards have been specifically reserved by ISO for information security matters. This of course, aligns with a number of other topics, including ISO 9000 (quality management) and ISO 14000 (environmental management).

As with the above topics, the 27000 series will be populated with a range of individual standards and documents. A number of these are already well known, and indeed, have been published. Others are scheduled for publication, with final numbering and publication details yet to be determined.

The following matrix reflects the current known position for the major operational standards in the series: 

ISO 27001 This is the specification for an information security management system (an ISMS) which replaced the old BS7799-2 standard	ISO 27002 This is the 27000 series standard number of what was originally the ISO 17799 standard (which itself was formerly known as BS7799-1)..
ISO 27003  This will be the official number of a new standard intended to offer guidance for the implementation of an ISMS (IS Management System) .	ISO 27004  This is the designated number for a new standard covering information security system management measurement and metrics..
ISO 27005  This is the methodology independent ISO standard for information security risk management..	ISO 27006  This standard provides guidelines for the accreditation of organizations offering ISMS certification.

標準

ISO官方網站http://www.iso.org

Because "International Organization for Standardization" would have different acronyms in different languages ("IOS" in English, "OIN" in French for Organisation internationale de normalisation), its founders decided to give it also a short, all-purpose name. They chose "ISO", derived from the Greek isos, meaning "equal". Whatever the country, whatever the language, the short form of the organization's name is always ISO.

International Organizagion for Standardizations, ISO

如果真的是用縮寫字的話，那就應該用IOS，問題它偏偏就不是縮寫字，而是由希臘文轉過來的字，原希臘文為isos，這是公平的意思。