| Title: | PATHWORKS V5 for DOS and Windows | 
| Notice: | OS2LAN::OS2:[PUBLIC] is alive again, but not what it used to be | 
| Moderator: | RANGER::CURLESS | 
| Created: | Fri Feb 11 1994 | 
| Last Modified: | Fri Jun 06 1997 | 
| Last Successful Update: | Fri Jun 06 1997 | 
| Number of topics: | 7404 | 
| Total number of notes: | 27276 | 
    We have Windows NT/95 clients on the inside of an AltaVista Digital
    UNIX Firewall with a Windows NT V3.51 server and PATHWORKS for OpenVMS
    V5.0A server both on the outside of the firewall.  We are running the
    TCP/IP protocol exclusively.
    
    We defined a Start-of-Connection packet filter in the firewall that
    enables a Windows NT/95 client to make an outbound initiated connection
    to either server on port 139/TCP but permits only the corresponding
    inbound connection as an ACKed response.  In other words, a reverse
    inbound initiated TCP connection from either server is not allowed by
    the firewall.
    
    The Windows NT/95 client can successfully connect to a share point
    offered on the Windows NT server but NOT to the PATHWORKS OpenVMS
    server.
    
    A sniffer analysis of the Windows NT/95 to PATHWORKS NetBIOS-over-IP
    attempted connection to port 139/TCP reveals that this server performs
    a reverse inbound intiated connection back to the client - ugh!
    
    Can anyone explain why this difference exists?  Is there any way around
    this problem?
    
    Please advise.
    
    
    				\Thanks in Advance
    
| T.R | Title | User | Personal Name | Date | Lines | 
|---|---|---|---|---|---|
| 7347.1 | nova05.vbo.dec.com::BERGER | Tue Mar 04 1997 12:53 | 5 | ||
| The license check maybe ? Anyway, this probably belongs more to the V5 VMS server conference since no PATHWORKS client is involved. Vincent | |||||