Using Samba Across Routed Networks
Andrew Tridgell states that SMB host browsing across routers is problematic. Here are his suggestions to allow this:
-------------------------------------------------------------- For cross-subnet (ie. routed) browsing you should do the following. There are other methods but they are much more complex are error prone:
1) all computers that you want visible should use a single WINS server (Samba or NT can do this)
2) the master browser for each subnet must be either NT or Samba. (Win9X doesn't communicate cross-subnet browse info correctly)
3) You should use the same workgroup name on all subnets. This is not strictly necessary but it is the simplest way to guarantee success. If you can't arrange this then you must organise for a way for browse info to propogate between subnets. (It does *not* propogate via WINS). It propogates via two mechanisms: i) each browse master notices workgroup announcements from other browse masters on the same broadcast domain ii) each non-Win9X browse master contacts the global DMB for the workgroup (typically the domain controller or a Samba box marked as the domain master) and swaps full browse info periodically. --------------------------------------------------------------
Also, Rakesh Bharania points out that Cisco routers can be configured to forward SMB traffic in a way that allows browsing. His suggestion is to configure the router interface which hosts SMB clients with a command like this:
ip helper-address x.x.x.x
where x.x.x.x is the IP address of the SMB server.
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Acknowledgements
Special thanks to Andrew Tridgell ( tridge@linuxcare.com) for starting and directing the Samba project and for keeping this document honest.
Brad Marshall ( bmarshall@plugged.net.au) and Jason Parker ( jparker@plugged.net.au) contributed time, patience, scripting and research.
Adam Neat ( adamneat@ipax.com.au) and Dan Tager ( dtager@marsala.com) contributed the bash scripts used to back up Windows machines to a Linux host.
Matthew Flint () told me about the use of the 'interfaces' option in smb.conf.
Oleg L. Machulskiy ( machulsk@shade.msu.ru), Jeff Stern ( jstern@eclectic.ss.uci.edu), Dr. Michael Langner ( langner@fiz-chemie.de and Erik Ratcliffe ( erik@caldera.com) suggested modifications to the section on Sharing A Linux Printer With Windows Machines.
Alberto Menegazzi ( flash.egon@iol.it) contributed the MagicFilter setup to enable a Linux machine to share a Windows printer.
Rakesh Bharania ( rbharani@cisco.com) contributed the suggestion for Cisco router configuration.
Rich Gregory ( rtg2t@virginia.edu) and others suggested that this document show some details about the smbfs package and its use.
Andrea Girotto ( icarus@inca.dei.unipd.it) contributed a number of valuable suggestions throughout the document.
Thanks, also, to all of the international translators that have brought this HOWTO to the non-English speaking world: Takeo Nakano ( nakano@apm.seikei.ac.jp), Klaus-Dieter Schumacher ( Klaus-Dieter.Schumacher@fernuni-hagen.de), Andrea Girotto ( icarus@inca.dei.unipd.it), Mathieu Arnold ( arn_mat@club-internet.fr), Stein Oddvar Rasmussen ( Stein@kongsberg-energi.no) Nilo Menezes ( nmenezes@n3.com.br) and many others for whom I don't have contact details.
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