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read only sftp access
by Andrei F 28 Nov '09

28 Nov '09

Hi, I'm trying to setup read-only SFTP repo. The directory that I'm planning to make available via sftp needs to have only read-only access. My issue is that this specific directory is already available for read & write access but under different credentials. When I try to login via my read-only account, openssh spits out an error about incorrect permissions. Any idea how can I share the same directory via sftp under two different usernames under the same filesystem permissions?

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IPTABLES and Hi-Risk blocking
by James B. Byrne 27 Nov '09

27 Nov '09

We are considering whether or not to block internal access to social networking and private entertainment web sites. This not a policy decision as of yet, just an exploratory exercise. Our gateways run CentOS-5.4 and use iptables to enforce firewall rules. The information that we wish to determine is whether or not it is feasible to block sites such as facebook, youtube, twitter, etc. using iptables. Is there a superior method? Does there exist already a generally accepted utility or method for accomplishing this? At the present time we only block outgoing traffic for a handful of internal hosts that should never have any reason to generate traffic destined outside the lan. But, now we are advised by some authorities that facebook and similar sites are considered security risks to hosts that are used to access them. Without debating the merits of such claims, how would one proceed to block internal network access to specific domain names using CentOS? Sincerely, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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PHP updates
by Craig White 27 Nov '09

27 Nov '09

For the 2 threads going on about PHP 5.2/5.3... CentOS tracks upstream whose version is... php-5.1.6-23.2.el5_3 If you want something newer, you have to go off the beaten path. try this...(as root) wget http://dev.centos.org/centos/5/CentOS-Testing.repo mv CentOS-Testing.repo /etc/yum.repos.d yum --enablerepo=c5-testing check-update and this would allow to update to version 5.2.9-2.el5.centos if you then... yum --enablerepo=c5-testing update php and if enough people actually convinced the developers that 5.2.9-2.el5.centos were feasible, then they would probably move it into the 'Extras' repository. Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Xen 3.4.1/3.4.2 and newer libvirt for Centos 5.4
by For＠ll 27 Nov '09

27 Nov '09

Hi, Is ther any repo wher I find xen 3.4.1 or 3.4.2 and newer libvirt for Centos 5.4 i386. For@ll

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Re: [CentOS] Docx format ?
by Sorin Srbu 27 Nov '09

27 Nov '09

>-----Original Message----- >From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf >Of Sorin Srbu >Sent: Friday, November 27, 2009 9:22 AM >To: 'CentOS mailing list' >Subject: Re: [CentOS] Docx format ? > >>> What about Powerpoint presentations, ie .pptx-files? Do they look anywhere >>> near the original look when opened in MS Office? >>> >>No clue - haven't run into one of those yet. >> >Anyway, I'll continue to look into OOO and pptx. Downloaded and installed OOO3.1 on a CentOS 5.4 i386 I had here. After some initial foul ups on my part (had OOO2 already installed, and had to first uninstall the older one and then do a forced manual rpm-install of OOO3.1), this is what I've found. I got a pptx-file from my boss with pictures and formatting and whatnot. It opened fine in CentOS. Some formatting was plain lost, but the pictures were all there, as far as I can tell. Some graphics, like arrows and such did not get through and looked like something from the 80s block graphics era. Some text got printed over other parts of the text, however I've a inkling this might be due to the screen size maybe? I also opened the same pptx with OOO3.1 on my WinXP-machine, and got a blank white screen, in slide show-mode. So basically, CentOS+OOO3.1 vs WinXP+OOO3.1 scores 1 to 0. Good work CentOS and OOO teams! -- /Sorin

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[OT] - Estrutura de armazenamento de uma grande quantidade de arquivos
by "Fábio Jr." 27 Nov '09

27 Nov '09

Olá pessoal, Desculpem o off-topic, mas não sabia onde postar minha dúvida. Se alguém tiver uma sugestão de lista para postar essa dúvida eu agradeço. O sistema do qual administro os servidores, possui uma funcionalidade que é exibição de imagens cadastradas pelos usuários. Estas imagens são armazenadas atualmente em um único diretório, e são gravadas com um número (ex.:123456.jpg), em um storage rodando centOS.(até q não é tão off-topic assim). O problema é que a quantidade de imagens já passa de 4 milhões de arquivos. Cada imagem antes de ser armazenada, é tratada, e salva em 3 tamanhos diferentes. Ou seja, existem 3 cópias de cada arquivos (4 milhões / 3). Espaço em disco não é problema, já que estas imagens são pequenas. O problema maior é a quantidade mesmo, e a organização. A medida que o numero de arquivos aumenta, fica pior para o SO buscar essa foto. Pra piorar a situação, os servidores de aplicação montam via nfs este storage para buscar os arquivos. Finalmente, o que venho pedir a lista seriam sugestões de como melhorar a indexação/organização destes arquivos. Já pensei em utilizar armazenamento distribuído (SAN, cloud, GlusterFS), organização por pastas com AliasMatch do apache para recuperá-las depois e armazenamento em banco de dados. Qualquer sugestão é bem vinda. Obrigado. []s -- Fábio da Silva Júnior - fjuniorlista(a)gmail.com ----- http://fabioojunior.wordpress.com -----

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Amavisd and ClamAV
by Tony Molloy 27 Nov '09

27 Nov '09

Hi, I want to move my mail server from sendmail to postfix over christmas. I've got a test server running with the following: postfix dovecot postgrey amavisd-new clamav spamassassin I've followed the howto's on the wiki <http://wiki.centos.org/HowTos> with the exception that I installed amavisd-new and clamav from the EPEL repo rather than rpmforge. Things work OK with the exception of clamav. When I start clamav I get the following error. [root@newgoext ~]# service clamd.amavisd start Starting clamd.amavisd: ERROR: Missing argument for option at line 2 ERROR: Can't open/parse the config file /etc/clamd.d/amavisd.conf [FAILED] As this is a test server I'v set selinux to permissive so it doesn't look like a selinux problem. Thanks, Tony -- Dept. of Comp. Sci. University of Limerick.

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my mail is refusing messages
by Nelson Gonzaga 27 Nov '09

27 Nov '09

Hi there, I trying to send e-mail using this: mail -s "maillog" ngonzaga(a)yahoo.com < /var/log/maillog but sendmail refused and I don't know why, see my maillog: Nov 19 14:31:33 servertdoc sendmail[11258]: nAJGVXXi011258: from=root, size=353085, class=0, nrcpts=1, msgid=<200911191631.nAJGVXXi011258(a)servertdoc.toshiba.fmg>, relay=root@localhost Nov 19 14:31:33 servertdoc sendmail[11258]: nAJGVXXi011258: to=ngonzaga(a)yahoo.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=383085, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1] There is some wrong setup, what can be? ____________________________________________________________________________________ Veja quais são os assuntos do momento no Yahoo! +Buscados http://br.maisbuscados.yahoo.com

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OT: Using route metrics under dhcpd.conf
by carlopmart 27 Nov '09

27 Nov '09

Hi all, Somebody knows how can I assign metric to a static router under dhcpd.conf? Many thanks... -- CL Martinez carlopmart {at} gmail {d0t} com

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Re: [CentOS] Docx format ?
by mark 27 Nov '09

27 Nov '09

Sorin Srbu wrote: >> -----Original Message----- >> From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf >> Of m.roth(a)5-cent.us >> Sent: Wednesday, November 25, 2009 7:22 PM >> Niki Kovacs wrote: >>> Roger asked: >>>> Is there any way I can read a .docx file on my CentOS desktop ? >>>> >>> Open Office 3 will do it. >> Yep, as well as .xlsx > > What about Powerpoint presentations, ie .pptx-files? Do they look anywhere > near the original look when opened in MS Office? > No clue - haven't run into one of those yet. > I'm looking into setting up a public computer in our seminar room, running > CentOS on an old door-stopper I had handy; a P3/500 with barely 500MB RAM. > Barely, he says. "Barely".... mark, remembering the hot new ->30MB<- h/d his bosses gave him in '89 as a holiday present > > ------------------------------------------------------------------------ > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos -- "Think of the elves as being like the CIA: whether or not they're on your side, you don't really want to be noticed by them" - Sean Mead (?), Windycon, 2002

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