November 2008 - Roundtable

we may be more like lawyers than we think
by Gilles Detillieux 24 Nov '08

24 Nov '08

This article has an interesting perspective on the commonality between open source and the law, and between FOSS programmers and lawyers... http://www.linux-mag.com/id/7187 -- Gilles R. Detillieux E-mail: <grdetil(a)scrc.umanitoba.ca> Spinal Cord Research Centre WWW: http://www.scrc.umanitoba.ca/ Dept. Physiology, U. of Manitoba Winnipeg, MB R3E 0J9 (Canada)

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Implication of multiple interfaces on the same subnet?
by John Lange 14 Nov '08

14 Nov '08

I'm just wondering if anyone has an in depth understanding of the Linux networking stack and can tell me what the implications are for putting two interfaces on the same network in the same subnet. Specifically, if you have a laptop connected via both Wifi and ethernet and both are active and have received IP addresses via DHCP, what would the expected result of that be? Which interface would be used for traffic to our subnet? Here is the way the routing table looks: Destination Gateway Genmask Use Iface 192.168.5.0 0.0.0.0 255.255.255.0 eth0 192.168.5.0 0.0.0.0 255.255.255.0 wlan0 127.0.0.0 0.0.0.0 255.0.0.0 lo 0.0.0.0 192.168.5.254 0.0.0.0 eth0 The routing table indicates that eth0 is preferred for traffic outside my network but how was that determination made? If I unplug the ethernet cable it immediately changes the routing table so that the wlan0 interface is the default gateway. I'm wondering what controls that behaviour? -- John Lange www.johnlange.ca

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Can't send to gmail. 451 4.5.0 SMTP protocol violation see RFC 2821
by John Lange 13 Nov '08

13 Nov '08

For some reason I can't seem to send any email to gmail accounts. The google mail servers keep telling me: 451 4.5.0 SMTP protocol violation see RFC 2821 The MTS is standard postfix and I've tried it from a couple different machines which otherwise don't have any problems sending mail. A google search turned up other people with the same problem but no solutions. Anyone have a clue what the problem is? -- John Lange www.johnlange.ca

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Samba domain logins
by Dan Martin 09 Nov '08

09 Nov '08

I am setting up a home network, Using Samba 3.2.4 running on FC9 as my primary domain controller (PDC). I have 2 windows desktops and a windows laptop, all running Win2k. I also have a Mac. What I am trying to do: 1) allow my family to log on to a windows machine or the mac using the same name and password 2) have their home folder prominently displayed as the default place to put files (so that I can do easy backups) 3) default to a backup local login if the Samba PDC is off line - preferably in a way that allows new files to be sent easily to the home directory when the PDC is back on line 4) allow me to use the SAME local profile on the windows machine that I normally use for local logins So far, this is what I'm able to make happen: 1) unified login accomplished using Samba machine as primary domain controller (PDC) 2) home folder displayed as just another drive or folder on the desktop - user responsibility to put important stuff here - I can live with this 3) would be good enough if usual login is denied when the PDC is down - not sure what happens here 4) this is my biggest challenge re #4 I have a dual head windows box with things set up the way I want. My profile was over 3GB - I have cut that to half, but it's still way to big to consider a roaming profile; and when I log in using this machine, I want all of the features specific to it to be available. I can switch off roaming profiles by setting logon path = <NULL, blank entry> on the Samba config file, but then windows sets up a NEW, different local profile for domain logins. I can't find out, wading through google searches, how to make it use the SAME local profile that I use to log in to the machine - I don't even know if it's possible. I tried replacing the folders in the new login profile (for the domain login) with "shortcuts" to the folders in the old profile, but the OS simply adds folders with the same names and ignores the links. I have copied some critical folders, but I do not have enough room on my partition to copy everything (I could live with my bookmarks being out of sync between the two folders, but I want most things to be the same). Any solutions? One I can think of right now is to scrap the PDC and use workgroups, with shortcuts to the home folder displayed on the desktops of local profiles (and forget about unified logins). Any advantage to using a windows machine as the PDC and making the linux box and Mac domain members? -- Dan Martin, MD GP Hospital Practitioner Computer Scientist ummar143(a)shaw.ca (204) 831-1746 answering machine always on

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Ubuntu 1-800
by Montana Quiring 06 Nov '08

06 Nov '08

Hello, Regarding the "Letter to the Editor" in: http://www.muug.mb.ca/pub/muuglines/pdf/muug0811.pdf Does anyone have any comments or info they would wish to pass on to Darcy? -- -Montana My Netvibes page: http://www.netvibes.com/antikx#About_Montana

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MUUG Meeting, Nov 11, 7:30pm -- What's new in OpenSUSE 11
by gedetil＠cs.umanitoba.ca 04 Nov '08

04 Nov '08

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, November 11. The meeting topic for this month is as follows: What's new in OpenSUSE 11 John Lange will demo the recently released OpenSUSE 11 running the Gnome desktop, highlighting the major changes from the OpenSUSE 10.X series and focusing on its rich desktop features, especially things that go "whizz-bang!" such as the 3D Desktop Effects. The group holds its general meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ********************************************************************** Please note our meeting location: The IBM offices, at 400 Ellice Ave. (between Edmonton and Kennedy). When you arrive, you will have to sign in at the reception desk, and then wait for someone to take you (in groups) to the meeting room. Please try to arrive by about 7:15pm, so the meeting can start promptly at 7:30pm. Don't be late, or you may not get in. (But don't come too early either, since security may not be there to let you in before 7:15 or so.) Non-members may be required to show photo ID at the security desk. Limited parking is available for free on the street, either on Ellice Ave. or on some of the intersecting streets. Indoor parking is also available nearby, at Portage Place, for $3.00 for the evening. Bicycle parking is available in a bike rack under video surveillance located behind the building on Webb Place. ********************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: http://www.muug.mb.ca/meetings/MUUGmeeting.pdf -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ PO Box 130 St-Boniface Phone: (204)474-8161 Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609

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