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Top Forums UNIX for Dummies Questions & Answers Question regarding strange FTP behaviour Post 302456609 by methyl on Friday 24th of September 2010 05:18:55 PM
Old 09-24-2010
Yeah. Check that both port 20 and port 21 are open on the firewall.


If it is not a firewall issue there are a huge list of possible causes. Some are:
1) Second computer in this FTP relay chain is hung.
2) Transient network break
3) Cisco routers with "jumbo packets" enabled.
4) Incorrect network speed/duplex settings. Expecially any "autonegotiate".
5) Duplicate IP address.


If is is not a firewall setting try a small block size e.g. "ftp -B 1". This will tell tell you wheter a router has erroneously negotiated "jumbo packets" which are known to hang FTP.
 

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ftpconfig(1M)						  System Administration Commands					     ftpconfig(1M)

NAME
ftpconfig - set up anonymous FTP SYNOPSIS
ftpconfig [ftpdir] ftpconfig -d ftpdir DESCRIPTION
The ftpconfig script is executed by the super user to set up anonymous FTP. Anonymous FTP allows users to remotely log on to the FTP server by specifying the user name ftp or anonymous and the user's email address as password. The anonymous users are logged on to the FTP Server and given access to a restricted file area with its own file system root. See chroot(2). The FTP area has its own minimal system files. This command will copy and set up all the components needed to operate an anonymous FTP server, including creating the ftp user account, creating device nodes, copying /usr/lib files, and copying timezone data. The passwd and group files set up have been stripped down to prevent malicious users from finding login names on the server. The anonymous file area will be placed under ftpdir. If the ftp user account already exists, then the current FTP area is used, and the system files in it are updated. All other files are left untouched. This command should be run to update the anonymous FTP area's configuration whenever a system patch is installed, or the system is upgraded. OPTIONS
-d Create a new or update an existing ftpdir without creating or updating the ftp user account. Use this option when creating guest FTP user accounts. OPERANDS
The following operands are supported: ftpdir The absolute pathname of the directory under which the anonymous FTP area is set up. EXIT STATUS
The following exit values are returned: 0 Successful completion 1 Improper usage of the command 2 Command failed ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWftpu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
ftpaddhost(1M), in.ftpd(1M), useradd(1M), chroot(2), attributes(5) SunOS 5.10 1 May 2003 ftpconfig(1M)
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