D3 also has the notion of nailed telnet ports on windows & *nix platforms .... on Linux at least this is achieved through xinet
Ross Ferris Stamina Software Visage > Better by Design! >-----Original Message----- >From: [email protected] [mailto:u2-users- >[email protected]] On Behalf Of Dave Taylor >Sent: Friday, 24 July 2009 12:28 AM >To: U2 Users List >Subject: Re: [U2] Converting from mvBase to Universe > >Hmm, > >Does this suggest that the UV (or other database) telnet server will be >listening on each of these non-standard ports ( the std telnet listening >port is 23? > >In UV, the telnet server port can be changed to any port no. other than >23, >but only to one other port no. afaik. From that telnet port no., as >Ross >said, each user is assigned a PID on which to connect with UV. > >afaik, mvBase is the only mv database that supports more than one telnet >server port, and mvBase ties each telnet server port to one or more (a >pool) >of mvBase user connections, so this could be done on a onn-to-one basis >in >mvBase. > >hth, > >Dave > >Dave Taylor >Sysmark Information Systems, Inc. >Authorized IBM Business Partner >49 Aspen Way >Rolling Hills Estates, CA 90274 >(O) 800-SYSMARK (800-797-6275) >(F) 310-377-3550 >(C) 310-561-5200 >www.sysmarkinfo.com >----- Original Message ----- >From: "Ross Ferris" <[email protected]> >To: "U2 Users List" <[email protected]> >Sent: Thursday, July 23, 2009 1:21 AM >Subject: Re: [U2] Converting from mvBase to Universe > > >>A "nailed port" in this context means that someone initiating a telnet >> (style) session to a non-standard port (lets say 5123) would ALWAYS be >> logged in as a fixed/known user number (say "user number 123"), rather >> than assigned a pseudo-random PID. By having your terminal emulator >> setup to use a specific port, you get something akin to the days of >> serial lines, where a wire from your terminal would always have you >> coming in on a fixed "port" (or user) number. >> >> Using this, some people (the OP included I'm guessing) would activate >> features based on this port number. "Back in the day" our tools were >> used in a DOD project (SASPers) and some facilities were only >available >> from known/secured locations, as determined by a signal running along >a >> dedicated wire connecting the terminal device & the server. >> >> So, the "nailed telnet port" became a mechanism to keep some of these >> facilities going. >> >> >> >> >> >> Ross Ferris >> Stamina Software >> Visage > Better by Design! >> >> >>>-----Original Message----- >>>From: [email protected] [mailto:u2-users- >>>[email protected]] On Behalf Of [email protected] >>>Sent: Thursday, 23 July 2009 2:41 PM >>>To: [email protected] >>>Subject: Re: [U2] Converting from mvBase to Universe >>> >>>Nailing ports on Windows is a critical issue.? IANA port rules specify >>>well-known and registered ports?ports should NOT be used without >>>registration.? At a minimum, a good OS would leave them alone at least >>>for requests for "dynamic" or "random" port numbers.? However, Windows >>>will grab ANYTHING above 1024 (including all registered ports)?unless >>>you reserve it in the registry first. >>> >>>One way to do it is to program Windows to just reserve all ports from >>>say 1025 thru 49151 (or another range appropriate for your system). >>>The Dynamic and/or Private Ports as specified by IANA are those from >>>49152 through 65535.? >>> >>>To reserve ports on Windows, at least on 2003, the doc is here: >>>http://support.microsoft.com/kb/812873/ >>> >>>Hope that helps! >>> >>>Steve... >>>-- >>>Steve Kneizys >>>Author of TMI Open Architecture Listener (IANA port 8300) >>> >>>-----Original Message----- >>>From: Don Robinson <[email protected]> >>>To: U2 Users List <[email protected]> >>>Cc: Curt Stewart <[email protected]> >>>Sent: Wed, Jul 22, 2009 11:13 pm >>>Subject: Re: [U2] Converting from mvBase to Universe >>> >>> >>> >>>Curt, >>> >>>RE: "nailed" ports. >>> >>>After a lot of hair pulling, I solved this problem on Unix but I don't >>>know if >>>it can be done on Windows and certainly not the same way. >>> >>>On Unix, UV uses a file named unohist but IIRC, on Windows, it uses >the >>>PID as >>>the port #. >>> >>>I have a couple of ideas so contact me directly and I may be able to >>>help you. >>> >>> Don Robinson >>>[email protected] >>> >>> >>> >>> >>> >>>________________________________ >>>From: Curt Stewart <[email protected]> >>>To: [email protected] >>>Sent: Sunday, July 19, 2009 5:43:05 PM >>>Subject: [U2] Converting from mvBase to Universe >>> >>>I have a client that is considering moving from an mvBase system to a >>>Universe (Windows) system. A lot of their processes are tied to >>>specific >>>ports and ranges. Is there an easy solution in Universe to "nail" the >>>telnet ports for the users? >>> >>>Also, they use UREAD and UWRITE and take advantage of the MVClients >>>ability >>>to read and write to the local workstation, instead of the server when >>>not >>>using MVClient. I haven't heard of this separation being available in >>>Universe, other than using something like Accuterm, am I right? Or is >>>there >>>an easy way to distinguish between writing to the local drive vs. the >>>server? How has others handled this conversion issue? Right now >we're >>>planning on assigning each user a directory on the server to write to, >>>does >>>anyone have any alternate ideas? >>> >>>Thanks for the help, I appreciate hearing your solutions. >>> >>>Thanks, >>>Curt >>>TRI-SYS Consulting >>> >>>[email protected] >>> >>>_______________________________________________ >>>U2-Users mailing list >>>[email protected] >>>http://listserver.u2ug.org/mailman/listinfo/u2-users >>>_______________________________________________ >>>U2-Users mailing list >>>[email protected] >>>http://listserver.u2ug.org/mailman/listinfo/u2-users >>> >>>_______________________________________________ >>>U2-Users mailing list >>>[email protected] >>>http://listserver.u2ug.org/mailman/listinfo/u2-users >> _______________________________________________ >> U2-Users mailing list >> [email protected] >> http://listserver.u2ug.org/mailman/listinfo/u2-users > >_______________________________________________ >U2-Users mailing list >[email protected] >http://listserver.u2ug.org/mailman/listinfo/u2-users _______________________________________________ U2-Users mailing list [email protected] http://listserver.u2ug.org/mailman/listinfo/u2-users
