NASA Science Network (NSN)


            _A_d_d_r_e_s_s:
            Network Information Center
            NASA Science Network
            MS 233-18
            NASA Ames Research Center
            Moffett Field, CA  94035

            _E-_m_a_i_l: nsnnic@nsipo.nasa.gov

            _P_h_o_n_e: (415) 694-5859 or (FTS) 464-5859


            _D_e_s_c_r_i_p_t_i_o_n

            The NASA Science Network (NSN) is an IP network  which  sup-
            ports scientists and flight projects funded by NASA's Office
            of Space Science and Applications  (OSSA).  The  network  is
            used  to  provide  remote access to such resources as scien-
            tific databases and supercomputing centers.  The  NSN  main-
            tains  hubs at several NASA centers which are interconnected
            in a partial mesh topology. These backbone sites use terres-
            trial  circuits  ranging in speed from 168 to 672 Kbps. From
            these hubs radiate numerous tail circuits; the  majority  of
            these tails are 56 Kbps, with a few at 9.6 Kbps as well.

            The NSN was designed to provide NASA's  scientific  communi-
            ties with a more general networking approach that would pro-
            vide  full  networking  services  in  a   vendor-independent
            environment. These services include file transfer and remote
            logon as well as email.

            NSN is a NASA-wide  network  managed  by  the  NASA  Science
            Internet  Project Office (NSIPO) at Ames Research Center. It
            is used for NASA-funded space science research programs  and
            flight projects.

            Users  include  NASA  sites,  and   government   facilities,
            research,   and   academic   sites   conducting  NASA-funded
            research.
            _________________________
            The information in this section is provided  in  accor-
            dance  with the copyright notice appearing at the front
            of this guide.




            August 6, 1989              NNSC       Section 5.15,  Page 1








            _N_e_t_w_o_r_k _a_c_c_e_s_s

            Network access is limited to users who  are  accessing  NASA
            resources.

            _W_h_o _C_a_n _U_s_e _t_h_e _N_e_t_w_o_r_k

            Access is limited to facilities which are working  on  NASA-
            funded  research.  It may not be used for private or commer-
            cial profit.

            _M_i_s_c_e_l_l_a_n_e_o_u_s _I_n_f_o_r_m_a_t_i_o_n

            In addition to NSN, the NASA Science Internet also  operates
            SPAN, the Space Physics Analysis Network which utilizes DEC-
            net protocols. NSI maintains applications gateways that pro-
            vide connectivity between SPAN and NSN.


































            August 6, 1989              NNSC       Section 5.15,  Page 2