NSS can refer to different things depending on the context. Here are some possible meanings of NSS:

• National Service Scheme: NSS is a public service program conducted by the Ministry of Youth Affairs and Sports of the Government of India. It was launched in 1969 and is aimed at developing students personality through community service. NSS is a voluntary association of young people in colleges, universities, and at +2 level working for a campus-community (especially villages) linkage.

• National Security System: NSS can also refer to any information system (including any telecommunications system) used or operated by an agency or by a contractor of an agency, or other organization on behalf of an agency, that is used or operated in the interest of national security.

• National Security Strategy: NSS is a report mandated by Section 603 of the Goldwater-Nichols Department of Defense Reorganization Act of 1986 (Public Law 99-433). The NSS has been transmitted annually since 1987, but frequently reports come in late or not at all. The NSS is to be sent from the President to Congress in order to communicate the executive branch’s national security vision to the legislative branch. The NSS provides discussion on proposed uses of all facets of U.S. power needed to achieve the nation’s security goals).

• Network Security Services: NSS is a set of libraries designed to support cross-platform development of security-enabled client and server applications. Applications built with NSS can support SSL v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509 v3 certificates, and other security standards. NSS is available under the Mozilla Public License v2 (MPLv2) .

In summary, NSS can refer to a public service program in India, a national security system, a national security strategy report in the US, or a set of libraries for network security services.