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Top Forums UNIX for Dummies Questions & Answers Samba server guest connections Post 302580734 by Corona688 on Friday 9th of December 2011 11:58:37 AM
Old 12-09-2011
samba always expects its own usernames to match system ones. That's how they login -- a samba password associated with a local system username. When samba has an entry and /etc/passwd doesn't, samba considers that file corruption!

So yes -- there does have to be a 'nobody' user. Linux systems almost always have one anyway, a do-nothing user with no home directory, no password, and access to nothing significant. If you check ps aux you'll probably find daemons running as nobody.

Since Windows can have very long and strange usernames which UNIX would refuse to keep in /etc/passwd, there has to be some way to translate them into local usernames. That's what smbusers is for.

It's just a text replacement which happens before login. So as long as you translate those user names into a local username, it's okay.

Note that samba doesn't care about your system passwords, just the samba ones, which is why samba can login to 'nobody', which shouldn't have a password for local logins.
 

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NDRDUMP(1)						    System Administration tools 						NDRDUMP(1)

NAME
ndrdump - DCE/RPC Packet Parser and Dumper SYNOPSIS
ndrdump [-c context] {pipe} {function} {in|out} {filename} ndrdump [pipe] ndrdump DESCRIPTION
ndrdump tries to parse the specified filename using Samba's parser for the specified pipe and function. The third argument should be either in or out, depending on whether the data should be parsed as a request or a reply. Running ndrdump without arguments will list the pipes for which parsers are available. Running ndrdump with one argument will list the functions that Samba can parse for the specified pipe. The primary function of ndrdump is debugging Samba's internal DCE/RPC parsing functions. The file being parsed is usually one exported by wiresharks "Export selected packet bytes" function. The context argument can be used to load context data from the request packet when parsing reply packets (such as array lengths). VERSION
This man page is correct for version 4.0 of the Samba suite. SEE ALSO
wireshark, pidl AUTHOR
This utility is part of the Samba[1] suite, which is developed by the global Samba Team[2]. ndrdump was written by Andrew Tridgell. This manpage was written by Jelmer Vernooij. NOTES
1. Samba http://www.samba.org/ 2. Samba Team http://www.samba.org/samba/team/ Samba 4.0 06/17/2014 NDRDUMP(1)
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