FTP Between LAN Node and DDN Foreign Host


TAC.1912-SCTC@E.ISI.EDU
11 Jul 1988 04:37-PDT


We are in the process of configuring several local area networks
which will be linked together through another host serving as a
router. We also have a DDN host for Milnet connectivity. In
considering the configuration, the question was raised as to how an
FTP can be done between a LAN user and a foreign host on DDN. A
picture of the system is given below.

Each LAN has a DEC MicroVax II for the server. Each MV2 is connected
to a DEC 8650 via DECNet or dial-up access. There is a second VAX
8650 serving as the DDN host. The 8650s are connected by DECNet as
well. All machines are running Ultrix-32 with TCP/IP.

 _______ ________ ________ +=======+ ___________
| | | | | | { } | |
| MV2 |_____| VAX |______| VAX |___{ DDN }___| FOREIGN |
|_______| | | 8650 | | | 8650 | { } | HOST |
    | | |________| | |________| +=======+ |___________|
 ___|____ |______________|
| | (alternate)
| Z248 | ( route )
| USER | (possbile )
|________|

Problem: A user on a Zenith Z-248 logs into the MV2 and then wants
to do an FTP beteen the MV2 and a DDN foreign host. Is there a way
to make the two VAX 8650s function in such a manner that the FTP
occurs directly between the MV2 and foreign host rather than using
the DDN host as an intermediary (i.e. requiring two FTPs)? If
software can be written to do this function, where can it be obtained
if already written?

Please send all responses directly to me, not the TCP-IP group.

TAC.1912-SCTC@ISIE.ARPA (Check the header to be safe).

STEVEN P. LONG, Capt, USAF (804) 764-6502
1912 CSGP/MCN AV 574-6502
Langley AFB, VA 23669



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