On Tue, 4 Sep 2007 22:17:15 -0400, John S. Giltner, Jr. wrote: >Bill Godfrey wrote: >> On Tue, 4 Sep 2007 14:21:18 -0500, McKown, John wrote: >> >>>> -----Original Message----- >>>> From: IBM Mainframe Discussion List >>>> [mailto:[EMAIL PROTECTED] On Behalf Of Philip Miscione >>>> Sent: Tuesday, September 04, 2007 2:07 PM >>>> To: [email protected] >>>> Subject: Mainframe FTP >>>> Sensitivity: Private >>>> >>>> I am trying to figure out where or how the port command gets built in >>>> this FTP job, I want to change it to >>>> >>>> PORT 161,221,112,120,8,158 >>>> >>>> I can't find it anywhere in the JCL or sysin ? >>>> >>>> 331 Password required for mainframe. >>>> >>>> EZA1701I >>> PASS >>>> >>>> 230 User mainframe logged in. >>>> >>>> EZA1460I Command: >>>> >>>> EZA1736I get deposits.txt 'P.SXA2X0.XD01.XXXX.BDEPOS(0)' (r >>>> >>>> EZA1701I >>> PORT 161,221,112,20,8,158 >>>> >>>> 200 PORT command successful. >>>> >>>> TIA >>> That is dynamically generated by the FTP server. I am not aware of any >>> way to "hard code" it to some other value. In fact, it may (and likely >>> will) vary over time. This is a part of the "passive" or "firewall >>> friendly" protocol for ftp. >>> >> >> The PORT command is not used in "passive" ftp. >> In "passive" ftp, the port information for the data connection is passed from >> server to client in the "227 Entering passive mode" message. >> >> Bill >> > >When using passive FTP both sides tell the other side what port it will >use. The client tells the server what port it will use to initiate the >connection on the PASV command, the server tells the client in "227" >message. >
The PASV command has no operands. At the time the server sends the "227" message to the client, the server has no information about the client port. It won't have that information until the client actually connects to the port specified in the "227" message. I should say that the "PORT" command can in fact be used in "passive" ftp, but that is for transfers between two servers A and B controlled by client C. I don't think that's what this thread is about, although there's not enough information in the OP's message for me to be completely sure. Bill ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
