Summary: wu-ftp, Solaris and Mac's

From: Al Aldrich (
Date: Mon Feb 12 1996 - 06:02:43 CST

>From: Simon Burr <>

Thanks to Simon Burr..who answered the following.

>>I moved all of my Anon FTP product demo's from an
>>HP9000 over to the Sparc running Solaris (both running wu-ftpd)
>>and now the ftp links to download the demo's don't work for
>>Mac's only. They work fine for PC's and Unix web clients but
>>not for Macs. Netscape just hangs after loading the download
>>window and Mosaic says cannot FTP, no support for 'Passive'

Simon's answer.

>The problem is with the permissions on the tcp and zero devices. We have the
>following in our anon-ftp area (a hacked up wu-ftpd) which works with
>passive FTP:
>simes[984]% ls -al ~ftp/dev
>total 6
>dr-xr-xr-x 2 bin other 512 Jul 11 1995 .
>dr-xr-xr-x 8 root root 512 Feb 6 16:35 ..
>crw-rw-rw- 1 root other 11, 42 Jan 19 1995 tcp
>crw-r--r-- 1 root other 99, 1 Jan 19 1995 ticotsord
>crw-r--r-- 1 root other 11, 41 Aug 4 1994 udp
>crw-rw-rw- 1 root other 13, 12 Aug 4 1994 zero
>Note the 666 permissions on zero and tcp. The anon-ftp daemon needs to write
>to these to establish a passive FTP connection. Since by this point it is
>running as the FTP user, it can not do that with the standard file permissions
>for tcp and zero under Solaris.

He was correct..when I did chmod 666 tcp zero the WWW browsers on the
Macs worked fine.



Al Aldrich
Director of Operations 603-886-9050
White Pine Software

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