Difference between revisions of "Linux@WUR"

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m (Using LaTeX: link to new page 'TeXWUR')
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== Using LaTeX ==
 
== Using LaTeX ==
  
See TeXWUR
+
See [[TeXWUR]]
  
 
== Other Services ==
 
== Other Services ==

Revision as of 18:46, 22 May 2009

Linux@wur settings

Using an email client

Use an email client that can do IMAPS, SMTP with STARTTLS and authentication and LDAP. Sylpheed is a nice client http://sylpheed.good-day.net/ as is the mailer that comes with Mozilla. For the console die hards there is the MuttMailer! Receiving email:

  • Server for receiving: imap.wur.nl
  • Use SSL for IMAP connection
  • Use port 993
  • The IMAP login and password is simply your wur account, for example annie001 and annie

Sometimes it is necessary to show also the unsubscribed folders to see all your mail folders (it is in the advanced options in Thunderbird).

Sending email:

  • Server for sending: smtp.wur.nl
  • Use TLS (sometimes called STARTTLS) for SMTP connection
  • Use port 25
  • The SMTP password is simply your wur account, for example annie001 and annie

Using this server you can only send email if your from adress is a @wur.nl adress.

  • In Evolution 2.8.1.1: authentication type NTLM/SPA works. [Don't know if this setting shows up in any other mail client, but here it was necessary so I added this FYI - Raoul]

If you want to send email using a from address that is not a @wur.nl adress you can use:

  • Server for sending: net.wur.nl
  • No TLS.
  • No username or password.

See also WURImapForDummies for an elaborate example installing Mozilla mail.

Since Evolution 2.x has also an exchange connector it is really nice to use it. And setting it up is really easy!

  • Open the preferences window -> Mail Accounts -> Add
  • Push Forward
  • Fill in your Name and E-mail Address (it is not used for the connection so you can use the complete one)
  • Choose the Microsoft Exchange server type
  • Fill in your username e.g. annie001 and the OWA Url: https://webmail.wur.nl/exchange/.
  • Push Authenticate
  • Fill in your password (check the remind box if you like to)
  • Check the automatically check box
  • For the Global Catalog use 10.110.10.2
  • You can leave the responses limit and password warning boxes checked (although I do not know whether it works)
  • Give your account a name
  • Find a timezone, if it is your first account
  • Push apply!


To search in the phone directory (which has all email addresses as well) use the following:

  • LDAP server: ldap.wau./nl
  • search base: o=Wageningen UR,c=NL
  • portnumber: 389
  • ssl: off

With Mozilla mail select edit-preferences -> Addressing -> Directory server and fill in above settings. It is nice - now you magically see all E-mail addresses appear when typing!

To search in the active directory:

  • LDAP server (hostname): 10.110.10.2
  • search base (base DN): DC=wurnet,DC=nl
  • port number: 389
  • bind DN: firstname.lastname@wur.nl (yes that is your email address!)
  • bind password: your wur password
  • ssl: off
  • in thunderbird: advanced -> subtree -> searchfilter: (objectclass=User)

This server can be extremely slow, so I advice you to get a cup of coffee when you are using this one...

However if you connect to this server via the Exchange connector in Evolution, it works quite well instead!

fetchmail example

Use the following .fetchmailrc file

 poll imap.wur.nl protocol imap username "yourname" password "yourpassword" ssl

And here the one I use (Pjotr):

 poll imap.wur.nl with proto IMAP port 993 user 'yourname' there is 'account' here ssl
   fetchall keep mda "/usr/bin/procmail -d  %T"

mutt with IMAPs example

 mutt -f imaps://yourname@imap.wur.nl

using Thunderbird as mail client

Most of the IMAP settings explained above apply.

General settings

Incoming mail:

  • Server name: imap.wur.nl
  • Port: 993
  • Security: SSL

Optional settings

Optional (my preference)

  • When I delete: move to trash
  • Clean up ("expunge") inbox on exit

Setting correct folder names

The WUR exzchange server uses non-default folder names for the trash, sent items, etc. Some of these can be set from within Thunderbird: (Account settings -> Copies and Folders)

  • Place a copy in: other: Verzonden items on WUR account
  • Keep message drafts in: other: Concepten on WUR account.

The location of the trash folder cannot be modified from within Thunderbird. This has to be done by editing the "prefs.js" configuration file. Mine is located at:

 ~/.mozilla-thunderbird/2hod9x4q.default/prefs.js

The line that reads

 user_pref("mail.server.server2.trash_folder_name", "Deleted items");

or similar should be changed into

 user_pref("mail.server.server2.trash_folder_name", "Verwijderde items");

That will do.

Auto-compaction of folders

Deleted mails are not really deleted, they are only marked as deleted. This is not visible from within Thunderbird, but it is from e.g. webmail. To prevent this, folders need to be compacted.

  • Go to edit -> preferences -> advanced -> network & disk space
  • Mark "compact folders when it will save over" 100 kb

Happy thunderbirding!


Using the department printserver

Use samba when your print services have been moved to Win2K by WURNET.

The easiest way is to use CUPS for printing. Install both Samba and CUPS on your machine. Get the name of your printer and its hostname (same as used by Windows machines e.g. //sdep0005/psgp3032pcl)

You can test to see whether the printer is up with

 smbclient //sdep0005/psgp3032pcl -U annie001 -W WUR

login with your password and you should see a prompt - it means you have access to the printserver. Good.

Next step is to tell CUPS you want to print through SAMBA. See the short manual at http://mumford1.dyndns.org/~bs7452/linuxhelp/cups.html (basically you have to add a symbolic link so CUPS can find smbspool).

Restart CUPS and access the webinterface at

Add a printer with the URI

 smb://annie001:password@WUR/sdep0005/psgp3032pcl

And you should be able to print through lpr or cups_lpr!

Graphical interfaces

Yast: Open the printer module and push Add. Select the SMB-networkserver and fill-in the form:

  • Workgroup = WUR
  • Hostname = Name printserver (e.g. sdep0005)
  • Name externe wachtrij = Name of the printer (e.g. psgp3032pcl)
  • Username = Your login name (e.g. annie001)
  • Password = Your password

You can test the SMB-connection. When that is successful continue with filling in the next form (they are for your information only). Select the printer. Now you can test the printer (as well as entering more advanced configuration settings like restrictions). Your printer is ready to use!

Gnome: First install both Samba and CUPS on your system and check whether it is possible to connect to the printer with:

   smbclient //sdep0005/psgp3032pcl -U annie001 

Leave out the -W WUR setting. The Gnome GUI is not able to deal with workgroups. When you cannot reach the printer make sure your samba workgroup is set to WUR. Open the smb.conf file, and find the following lines:

# Change this to the workgroup/NT-domain name your Samba server will part of
 workgroup = WUR

Try it again and make sure that it is able to connect (exit with exit).

Install the printer:

  • System -> Administration -> Printing
  • New Printer
  • Network Printer [Windows Printer (SMB)]
  • Cancel the offered connections (this is really annoying)
  • Computer = sdep0005
  • Printer = psgp3032pcl
  • Username = annie001
  • Password = yourpassword
  • Select the printer model
  • Right click on the new printer -> make it the standard (then lpr will use it too!)
  • Right click on the printer -> properties, to select double-sided printing and to print a test page

Enjoy printing!

Getting a PPD for Postscript

https://portal.wur.nl/sites/Gebruik_Multifunctionals_Wageningen_UR/default.aspx

The Postscript Printer Description file NRMPC253.PPD is available on Windows systems in \WINDOWS\system32\spool\drivers\w32x86\3 on systems where this printer is installed.

Install the printer for Direct Printing (e.g. Ubuntu 7.10):

  • System -> Administration -> Printing
  • New Printer
  • Windows Printer via SAMBA
  • smb:// = /scomp0308/P0601300_PS_Color
  • Select Authentication required
  • Username = annie001
  • Password = yourpassword
  • Verify to make sure credentials are accepted -> Forward
  • Provide PPD File (NRMPC253.PPD) -> Forward
  • Leave Installed options as suggested (or adjust if you know options are available)
  • Printer Name, Description and Location -> Apply

At http://www.linuxprinting.org/printer_list.cgi?make=NRG you can check for other driver selections.


Using the department fileserver

Finding the location of a share

In order to use the guides below, you'll have to know on which servers the windows shares reside. The easiest way is to use a Windows PC, start up Explorer, got to the share and look at the Properties.

Alternatively, you can use smbclient to find all shares on a server:

  • smbclient -I <server>.wurnet.nl -W wurnet.nl -U yourname001 -L <server>

Where <server> is scomp0300 for PSG and scomp0291 for ESG.


Using smbmount (normal user)

Suppose the server your personal share is located on is called sdep001 and your username is annie001, your password is annie, and you want to mount this share on ~/mnt If you do not know this information you can get it out of the ActiveDirectoryServer or from the "My Computer" screen of a windows machine.

  • smbmount '//sdep001/annie001$' ~/mnt/ -o username=annie001,password=annie,workgroup=WUR

if you leave out the password, the program will ask you for your password during the mounting:

  • smbmount '//sdep001/annie001$' ~/mnt/ -o username=annie001,workgroup=WUR

Using mount (as root) =

you can also do this using regular mount, as Stephan Verrips writes:

  • mount -t smbfs -o username=verri001,workgroup=wurnet.nl //sdpw0001.wurnet.nl/verri001$ ~/mnt

Alternatively, the (newer) CIFS protocol can be used instead of SMB. The following example connects to the 'webdocs' share where web related files can be stored.

  • mkdir /mnt/webdocs
  • mount -t cifs -o username=annie001,workgroup=wurnet.nl //skgr0004.wurnet.nl/webdocs$ /mnt/webdocs

Automatically mounting at boot (/etc/fstab)

Add the following line to the file /etc/fstab

 //sdep001/annie001$ /mnt/wur smbfs username=annie001,password=annie,workgroup=WUR,uid=502 0 0

or a really working example (for DPW - note the spaces in the name):

//scomp0300/PSG~DPW\040Laboratory\040of\040Nematology$ /mnt/wur smbfs //username=annie001,password=annie,workgroup=WUR,uid=501 0 0 

The uid represents the user id you use - check your id with the id command:

 id

it is also possible to use a gid (group id) to share the mounted drive with multiple users on one system.

Note: since it contains your password this option is not so secure!

 Safer is to use a separate password file:
 
  • cd ~
  • echo username=annie001 > .smbpassword
  • echo password=annie >> .smbpassword
  • chmod 600 .smbpassword
 This created a hidden password file that can only be read by you or the root

Change the line in the /etc/fstab into

  • //sdep001/annie001$ /mnt/wur smbfs credentials=/home/annie/.smbpassword,workgroup=WUR,uid=502 0 0

Note: you set the uid to your user id (see 'man id') so you can write/read from your normal account.

Another example, again using the CIFS protocol instead of SMB, to automatically connect to the 'webdocs' share:

  • //skgr0004.wurnet.nl/webdocs$ /mnt/webdocs cifs credentials=/home/annie/.smbpassword,workgroup=wurnet.nl,uid=502 0 0

Using Konqueror

Windows shares can also be accessed, without any mounting, with the SMB kio slave (KDE). The SMB kio slave can be used in Konqueror but also in other KDE applications.

The format of the url is:

 smb://<username>@<hostname>/<sharename>

where e.g.:

  • username: wur\annie001
  • hostname: sdep001.wur.nl
  • sharename: annie001$

Troubleshooting

If you get the error "Connection to .... failed" and you are sure you typed the server name correctly, you have to manually set the wins server in /etc/samba/smb.conf. Find the line that reads like:

  •  ; wins server = <something>

Remove the ; and change the <something>:

  • wins server = 10.110.10.3

Using WebDAVS

You can also connect to the fileservers with WebDAV. GNOME and KDE both provide GUI's for doing that. In GNOME you can open the GUI with Connect to server... under Locations. In KDE you have to open konqueror and type "remote:/". Then click on the "Add a Network Folder"-icon.

Select the encrypted WebDAV(s)-type Then fill in the fields

  • Server = wic2.wur.nl
  • Port = 443 (or use encryption)
  • Folder = ANNIE001_annie001
  • User = annie001
  • Name = anything you like

Accessing files through the web

You can use WIC or WURWEB. These also work from outside the WUR network

Accessing files on the DFS-Root

What is the DFS-Root

DFS is Microsoft's Distributed File System. The purpose of a distributed file system is that the user can access files without knowing on which server the files are locates. The root of a distributed files system is called the DFS-Root. In the DFS-Root are virtual directories which are actual 'links' to shares on some servers.

In WURNET there is one wur-wide DFS-Root \\wur\dfs-root usually mapped to the W:-drive in windows.

The samba client is unable to directly access files in the DFS-Root, instead you have to connect to the actual underlying shares.

DFS-Root directory mappings

If you have access a file or directory in the format:

\\wur\dfs-root\dir\rest\of\path or W:\dir\rest\of\path

then you must substitute \\wur\dfs-root\dir or W:\dir according the following table (Dir -> share):


  • AFSG = //ATO0001C/AFSG$
  • APPS = //SCOMP0025/apps
  • ASG = //LD010s/ASG$
  • ATV = //SATVF0001/shares
  • BC = //SCOMP0064/BC
  • DPT-DIER = //SCOMP0064/DIER
  • DPT-MAATSCHAPPIJ = //SCOMP0063/MAATSCHAPPIJ
  • FB = //SCOMP0064/FB
  • LEI = //LEIDH017S/SHARES
  • PLANT PROJECTS = //SPRI0010/PLANTPROJECTS$
  • RIKILT = //SCOMP0063/RIKILT
  • STUDENT = //SCOMP0064/STUDENT

The spaces in the names have to be escaped, using \040.

Connecting to your computer from home

public VLAN

If you need access to your computer at the university. The simple way: get your computer into the public VLAN, you will get a fixed 137.224 IP address and you can connect to your computer from home using ssh. The system administrators from the departments can do this for you.

Once you are on the VLAN you can even use IMAP mail from home through ssh tunneling, using for example:

 ssh -L 1993:imap.wur.nl:993 -f -N 137.224.xx.xx
 mutt -f imaps://yourlogin@localhost:1993/INBOX

using the VPN

Another, more complicated way, is to use VPN access. There are two clients for the VPN hardware in use at the university: a client from Cisco, and a native client called 'vpnc'. The native vpnc client is standard available in Debian Sid (apt-get install vpnc), I cannot say for other distributions. The cisco client can be downloaded from the university

the Cisco vpnclient

Note: this currently does not work with kernel 2.6!

the native vpnc

Note: recently vpnc stopped working

  • unpack the tarball
  • run 'make && make install'
  • make a config file /etc/vpnc.conf containing:

IPSec gateway mol01.wur.nl
IPSec ID IPSECWUR
IPSec secret Corridor-WUR01
Xauth username <your wur userid>
Xauth password <your wur password>

  • beware, vpnc is very picky, you cannot have two spaces, or a tab, or any appending spaces or something like that in the file
  • create the tun device ('mknod c 10 200 /dev/tun')
  • modprobe tun
  • start vpnc
  • route add -net 10.0.0.0/8 dev tun

Changing Your Password

You can change your WURNET password with samba's client:

 smbpasswd -r scomp0001.wurnet.nl -U annie0001

Passwords expire in 90 days - so make sure you reset it within that period. (Note: it is possible to keep your old password by running this command twice - setting it back the second run).

Example code:

echo -e "$preferred_password\n$temporary_password\n$temporary_password" | smbpasswd -s -r $server -U $user

echo -e "$temporary_password\n$preferred_password\n$preferred_password" | smbpasswd -s -r $server -U $user

Using VMWare or Virtualbox

See VMWareAtWUR or Virtualbox for using MS Windows inside Linux or OS/X

Using LaTeX

See TeXWUR

Other Services

Some webservices of WUR have problems with non-IE browsers. Check BrowserIssues for a list.

Registering with the wurnet dns

The wur dhcp server can automatically register your linux box in the dns. For this to work, the dhcpclient needs to send the hostname in netbios format to the dhcp server. If you host is called 'linux001', enter the following line in /etc/dhclient-eth0.conf:

  • send host-name "LINUX001";

Your host will be known as linux001.wurnet.nl. Make sure you set your hostname accordingly using the hostname command:

  • # hostname linux001.wurnet.nl


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