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Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

 
Jason_429
Occasional Advisor

FTP problems TCPIP v 5.4 and TCPIP v 5.0

I am having problems with FTP between two alpha servers. They have two different versions of VMS and TCPIP loaded on them.

# 1 = OpenVMS V7.3-2 and TCPIP V5.4
# 2 = OpenVMS V7.2 and TCPIP v5.0

Everything works fine when i try to connect and transfer from #2 to #1. However when i connect and try to transfer from #1 to #2 it gets connected fine, but is unable to actually transfer a file.

Here is the error message from Alpha # 1 (trying to send)...

230 User logged in.
FTP> put t.t
200 TYPE set to IMAGE.
200 PORT command successful.
150 Opening data connection for DKA100:
%TCPIP-E-FTP_DATACONF, cannot establish data connection with remote host
-SYSTEM-F-REJECT, connect to network object rejected
550-Failed to recv FDL size DKA100:[DIR]T.T;
550 normal successful completion
200 TYPE set to ASCII.

The log in my home directory on #2 shows no errors... dka100:[dir]TCPIP$FTP_SERVER.LOG

However the log on #2 tcpip$ftp_run.log
displays the following error ....

%TCPIP-I-FTP_OBJ, object: -
%TCPIP-I-FTP_CHINFO, TCPIP$FTPC00004: Network $QIOW failed on FDL size recv
%SYSTEM-F-LINKDISCON, network partner disconnected logical link

Any help or ideas would be very appreciated.
5 REPLIES 5
Andy Bustamante
Honored Contributor

Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

Based on the error message I'm going to make an assumption: These two systems are located on different networks and there's at least one firewall (or other NAT device) between them.

FTP uses 2 TCP connections, a "control" connection and a "data" connection. In active FTP the the remote note will create the connection. In passive move, the local site opens the data connection. I don't recall when passive support was added to TCPIP. You can try to enable this with FTP> passive If this doesn't work you'll need to work with your network support group to configure incoming ftp-data connection, or upgrade the remote site to a version of TCPIP that supports passive connections.
If you don't have time to do it right, when will you have time to do it over? Reach me at first_name + "." + last_name at sysmanager net
Ian Miller.
Honored Contributor

Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

550-Failed to recv FDL size DKA100:[DIR]T.T;
suggests a incompatability in the protocols. If one vms system ftp's to another it uses an extended protocol to pass file attribues.
See if there is a SET command to switch this off.
V5.0 was a really bad version - thats why V5.0A came out as it fixed some of the really bad bugs.
____________________
Purely Personal Opinion
Jason_429
Occasional Advisor

Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

Thanks much both of you. It looks like it is update time.
Ian Miller.
Honored Contributor

Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

you are better off upgrading if you can but if you can turn off VMS PLUS mode you may be ok.
____________________
Purely Personal Opinion
Michael Purdy
Advisor

Re: FTP problems TCPIP v 5.4 and TCPIP v 5.0

Hello, I´ve just upgraded several DS15´s, VMS7.3-2 (PAtch V0300) and TCPIP v5.4 - ECO 4. trying to FTP between any of these nodes gets a %TCPIP-E-FTP_NETERR, I/O error on network device
-SYSTEM-F-REJECT, connect to network object rejected
I´m sure this was a problem in TCPIP v5.0/1 but can´t find the fix? is this something obvious like a configuration problem. We have systems with VMS 7.2-1 and tcpip 5.1 which can connect to the other