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How to check for rootkit, troians etc in backed up files?
by M. Fioretti 17 Sep '08

17 Sep '08

Hi, there is a remote (VPS) Centos 4.2 server which *may* have been compromised. Reinstalling everything from scratch isn't a problem, it may even be an occasion to improve a few things, the question is another. There are backups of necessary shell script, ASCII configuration files and more or less important email (maildir format, if it matters) including messages with binary attachments in .doc, .pdf, .jpeg and other formats. What is, in the context above, the best way to make sure that **those** backed up files (which _must_ be put back on the server after reinstall) do not contain any rootkit, troian, virus, whatever? Which Centos / linux tool you'd recommend for this specific case? TIA, Marco -- Your own civil rights and the quality of your life heavily depend on how software is used *around* you: http://digifreedom.net/node/84

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Changing hostname?
by Niki Kovacs 17 Sep '08

17 Sep '08

Hi, I recently made a CentOS install on a machine with an unsupported network card. I had to add the driver for it later, once I finished the install. For now I have this: [kikinovak@localhost ~]$ hostname --fqdn localhost.localdomain Q: how would I change this to something like calimero.local? Here's what I *would* do, but I prefer to ask before. 1) edit /etc/sysconfig/network and edit this line: HOSTNAME=calimero.local 2) add a line to /etc/hosts like this: # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost.localdomain localhost 127.0.0.1 calimero.local calimero ::1 localhost6.localdomain6 localhost6 Please correct me if I'm wrong. cheers, Niki Kovacs

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estimating backuppc
by Craig White 17 Sep '08

17 Sep '08

talking with a client about various options for backup. They are an advertising agency so most of the space is used by various binary files JPG/TIFF/Movies. We have been using LTO-2 but if we jump up their storage to say 2Tb, that's going to be $5000 for LTO-3 with magazines. This affords us 3 week rotations rather simply. If we add hard drive storage for backups instead of buying LTO-3 tape drive, how much storage would we want for backing up 2Tb of binary data...surely not 6 Terrabytes? Craig

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Users and ftp
by Bob Hoffman 17 Sep '08

17 Sep '08

I have vsftp chrooted so that users can only come into their home directory. I have a few virtual hosts. I have the websites in the home directory of the intial user for each site. So the sites look like this. /home/user1/html /home/user2/html Using vsftp, I have set the default to chroot a user to their home directory. So user1 ftping in whill go right to his directory and not be able to go higher. My problem is adding a second user to be able to access the directory via ftp. In other words, user1 has a partner named user1a. I tried adding user1a in user1 group and not in user1 group...netiher worked. I tried adding user1a with no home directory and tried making their home directoy /home/user1 In all cases, ftp says 'cannot move to /home/user1' when trying to access with user1a. I am to the point it is time to forgo the security of chroot in vsftp to just add a second user. Any help appreciated.

2 1

cron job not working
by Al Sparks 17 Sep '08

17 Sep '08

Here's a perl script that works when I run it manually. But when I run it via cron, it won't create the directory. But worse than that, an email isn't sent to the account running the job. So I'm not getting an error, but it does work when I run it manually. If I put an obvious error in the script, cron does generate an email giving me the STDERR. What could it be? === Al #!/usr/bin/perl ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time); # Above functions, "time" and "localtime", return weird $year and $month # Need to be converted to become human readable $year = $year + 1900; $mon = $mon + 1; # Want $mday and $mon to be 2 digits, with leading zero if necessary $mday = "0" . $mday if $mday < 10; $mon = "0" . $mon if $mon < 10; # Second parameter is mask in octal chdir "/ora-local/db-test-backups"; mkdir "${year}_${mon}_${mday}", \00022; ####End perl script

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lan driver for intel dg43nb
by Rilawich Ango 17 Sep '08

17 Sep '08

Hi, I have an intel mother board dg43b (http://support.intel.com/Products/Desktop/Motherboards/DG43NB/DG43NB-overvi…) which have an on board lan interface. In default, it can't be activated after CentOS5.2 installed. I can't find any driver or information about how to activate this interface. Can anyone tell me how to work it out? Thanks, ango

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Problem with install Boardcom driver
by Pete Kay 16 Sep '08

16 Sep '08

Hi, I have to install Broadcom driver because the Dell Optiplex 330 running Centos 5.2 is not able to connect to the network. I am trying to install a Broadcom driver, but I get the followng error: [root@localhost tg3-3.85l]# [root@localhost tg3-3.85l]# make make -C /lib/modules/2.6.18-92.el5/build SUBDIRS=/usr/src/Server/Linux/Driver/tg3-3.85l modules make[1]: Entering directory `/usr/src/kernels/2.6.18-92.el5-x86_64' CC [M] /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.o In file included from /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.c:85: /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.h:234: error: redefinition of 'skb_transport_offset' include/linux/skbuff.h:1006: error: previous definition of 'skb_transport_offset' was here /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.h:239: error: redefinition of 'ip_hdr' include/linux/ip.h:109: error: previous definition of 'ip_hdr' was here /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.h:244: error: redefinition of 'ip_hdrlen' include/net/ip.h:48: error: previous definition of 'ip_hdrlen' was here /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.h:249: error: redefinition of 'tcp_hdr' include/linux/tcp.h:169: error: previous definition of 'tcp_hdr' was here /usr/src/Server/Linux/Driver/tg3-3.85l/tg3.h:254: error: redefinition of 'tcp_optlen' include/linux/tcp.h:179: error: previous definition of 'tcp_optlen' was here make[2]: *** [/usr/src/Server/Linux/Driver/tg3-3.85l/tg3.o] Error 1 make[1]: *** [_module_/usr/src/Server/Linux/Driver/tg3-3.85l] Error 2 make[1]: Leaving directory `/usr/src/kernels/2.6.18-92.el5-x86_64' make: *** [default] Error 2 [root@localhost tg3-3.85l]# Does anyone know how to resolve this problem? Many thanks in advance for all your help. Regards, Pete

4 3

Re: netfilter kernel crash in ip_ct_refresh_acct / ip_conntrack with centos 5.x
by Pasi Kärkkäinen 16 Sep '08

16 Sep '08

On Tue, Sep 16, 2008 at 12:12:45PM -0400, Jan Engelhardt wrote: > > On Tuesday 2008-09-16 03:38, Pasi Kärkkäinen wrote: > > > >Has anyone seen this netfilter kernel crash? > > > >Images from the console of the crashed firewall: > >http://pasik.reaktio.net/centos5-kernel-crash/ > > There have been some crashes reported; and some even fixed. > As such you are encouraged to try a (much) newer kernel > because 2.6.18 is outside the scope of the -stable team. > Yeah I know it's old.. but it's the only standard/supported kernel in Redhat Enterprise Linux 5 (and CentOS 5). I guess the best option would be to somehow figure out what the actual bug is, get (or make) a patch for it, and sent it for inclusion in RHEL 5.x errata kernels.. -- Pasi

1 0

PDF Print Server
by Joseph L. Casale 16 Sep '08

16 Sep '08

Guys, I was about to setup Acrophobia but I don't want the file people print to be emailed back. Anyone got a reco on a setup that can be mapped as an SMB printer and return the file back to the user from the printer just like how setup my windows PS printer to print to file. Thanks! jlc

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Kernel source - linux -2.6.18 i386 or i686
by Robert Moskowitz 16 Sep '08

16 Sep '08

As I plow through the Kernel source to figure out why the BEET patch is not working, I notice that there are two similar directories under ~/rpmbuild/BUILD/kernel-2.6.18: linux-2.16.18.i386 and linux-2.16.18.i686 So which one am I suppose to be patching? Currently, the patch starts out with: diff -urN a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c I followed the kernel source setup instructions on the wiki: http://wiki.centos.org/HowTos/I_need_the_Kernel_Source tells me to supply i686 for getting and setting up the source. But http://wiki.centos.org/HowTos/Custom_Kernel has me setting up a .config file with '# i386' as the first line. Now that is a comment, right? So why add such a comment. Perhaps it is NOT a comment? Shesh... Anyway, which directory structure gets used in the rpmbuild: rpmbuild -bb --target=`uname -m` kernel-2.6.spec 2> build-err.log | tee build-out.log Do I add this to the patch?

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