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CentOS 5.3 on X86_64: yum installs both i386 and x86_64 packages
by Patrick McEvoy 14 Oct '09

14 Oct '09

Hello, Is it advisable to clean up the system by deleting the i386 rpms? If so how do you know which ones to remove and which ones CentOS or RHEL require to be installed? You can use “yum list installed \*.i386″ to list all of the i386 rpms installed on your x86_64 system and I assume you could use “yum remove installed \*.i386″ to remove them all. If there were a few which were necessary to keep you could exclude them in yum.conf. Thanks for the help, Patrick

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Simple way to banish IP addresses ?
by Niki Kovacs 14 Oct '09

14 Oct '09

Hi, I just set up a web server... and my bandwidth is being eaten by some chinese folks trying to brute-force-ssh their way into the machine. Is there a simple way to banish either single IP addresses or, maybe even better, whole IP classes ? I know it's feasible with iptables, but is there something more easily configurable ? Cheers, Niki

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Update question
by Ron Loftin 14 Oct '09

14 Oct '09

I have some customer machines that have not been updated for some time, and are still on CentOS 5.2. While reading the release notes for 5.4, I have not yet seen anything that looks like it needs attention, but are there any known issues or "gotchas" related to moving directly from 5.2 to 5.4? Comments, pointers, things to look for are all welcome. Thanks muchly. -- Ron Loftin reloftin(a)twcny.rr.com "God, root, what is difference ?" Piter from UserFriendly

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Best practice settings for channel bonding interface mode?
by Götz Reinicke - IT-Koordinator 14 Oct '09

14 Oct '09

Hi, may be there are some best practice suggestions for the "best mode" for channel bonding interface? Or in other words, when should/would I use which mode? E.g. I do have some fileservers connected to the users lan and to some ISCSI Storages. Or some Webservers only connected to the LAN. The switches are all new cisco models. I've read sone docs (1), (2) and (3) so the theory is mostly clear. Thanks for any suggestion or hint, Best regards, Götz (1) http://www.linuxhorizon.ro/bonding.html (2) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-… (3) http://www.linuxtopia.org/online_books/rhel5/rhel5_administration/rhel5_s1-… -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium Geschäftsführer: Prof. Thomas Schadt

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scp with tty
by tony.chamberlain＠lemko.com 13 Oct '09

13 Oct '09

Hello I need to know a way to have scp allocate a tty on a remote machine so I can have it run sudo and activate a vpn which it will need to activate. scp with "-S" does not work. I can't chmod +s the cisco vpn client because when I try to run it it says it can not have setuser. I could have the user scp via root but I do not want to do that. Any way to have scp allocate a tty?

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customized centos 5.4 install, core install?
by David Mehler 13 Oct '09

13 Oct '09

Hello, This might be called a core build not completely positive. What i want to do is make a completely customized centos 5.4 unattended CD or DVt not only installs a specific list of apps apps that i want on each system, but configures them automatically perhaps via scripts, and enables or disables services etc. Basically, i want to drop the CD or DVD in a box which will probably not have a monitor anyway, and walk away. I then come back or ssh in and everything is already installed, any repos are added, configured and ready to go. Is this a core build? I'd appreciate any pointers on this. Thanks. Dave.

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web based file sharing software
by Ramon Nieto 13 Oct '09

13 Oct '09

Hello all Does anybody knows about web based file sharing software? of course that runs on centos. i have found 3 proyects on sourceforge, but i would like to hear from you what do you use or what do you recommend?. Thank you in advance.

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layer 8 / user level firewall on linux?
by Rudi Ahlers 13 Oct '09

13 Oct '09

Hi all, Does anyone know of a Linux firewall that offers layer 8 firewall / user level firewalling? Cyberoam (http://www.cyberoam.com/firewall.html) has a layer 8 firewall built into their UTM firewalls, and while it's a great product I find it a bit limited for what I want. I basically want to track which user access what on the internet, from an internal network. Ideally I want to limit access to certain objects (i.e. websites, by URL / keyword / type, FTP, skype, MSN, etc) for certain users as well. -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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Copy OS live to different hardware
by Bob Puff 13 Oct '09

13 Oct '09

Hello, I've got some CentOS 5.3 servers that I want to clone to a backup server, possibly a VM machine. I want this to be done while the server is up, and keep it synced at least once a day. I've done this already by using RSYNC, but here's the twist: the backup machine could be different hardware, and needs to have a different IP address (so they don't conflict). My question: exactly what files should I exclude, so that I copy everything -except- what pertains to the ethernet card(s), and hard drive mounts. I know of at least: /etc/fstab /etc/sysconfig/network-scripts/* /var/run /proc But what else? The original servers may have software raid, so those files can't be copied either. Bob

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CentOS for boot.kernel.org
by Geerd-Dietger Hoffmann 13 Oct '09

13 Oct '09

Hey Is there an initiative to get CentOS to work with boot.kernel ? Cheers Didi ---- My www page: www.ribalba.de Email / Jabber: ribalba(a)gmail.com Skype : ribalba

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