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34753 discussions

Make sshd log IP addresses, not hostnames
by Scott Moseman 24 Jun '09

24 Jun '09

Can I adjust the ssh daemon to log IP addresses instead of hostnames? I assume this situation is feasible... * 10.10.10.10 attempts to ssh to the server * reverse dns resolves to "somehost.domain.com" * ssh daemon logs "somehost.domain.com" in messages * foward dns on "somehost.domain.com" resolves to 10.10.10.20 Thus it causes some of my scripts a problem if the DNS resolutions don't match. It would be nice if it could just log IP addresses only. Thanks, Scott

3 5

link to "commercial support" page isn't really helpful
by Robert P. J. Day 23 Jun '09

23 Jun '09

i may be in the position of recommending that a sizable client take a look at centos as a supported platform in the near future, but if one goes to the "Support" -> "Commercial Support" page, it reads: This Section or Page is coming soon. that is *not* going to give this client any warm fuzzies. from a promotion perspective, either that page should get some actual content, or the link should be dropped entirely. or something. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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Re: [CentOS] link to "commercial support" page isn't really helpful
by Geoff Galitz 23 Jun '09

23 Jun '09

> > "Commercial support is currently unavailable, although this is being > investigated by the community. The difficulty is that CentOS is a > volunteer run effort." > > Don't overreact Spiro. I really like your blurb, but the difficulty > sentence > has a negative ring. Please rephrase that single line and you get a > gold-star. ;-) I (amicably) object to the "currently unavailable" phrase. As has been mentioned support is available. I would suggest the following change: -------------------------------------------------------------------- Currently the Centos Project cannot endorse any specific support offering and does not directly offer commercial support. Support is available from third party consultants and firms. Volunteer support is available via IRC (channel #centos), Centos mailing lists and the Centos forums. --------------------------------------------------------------------- I would avoid making any promises like "we are working on a support program" or "working on an endorsement program" simply because there is no telling when such a program would get rolled out. Keeping people waiting around for a long time is not so good for the Centos image. FWIW, I think we should lighten up on the original poster. He asked a simple question, he got an answer. There's no need to beat up on each other... it is not constructive. -geoff --------------------------------- Geoff Galitz Blankenheim NRW, Germany http://eifel-consulting.biz/blog/ http://german-way.com/blog/

3 3

Re: [CentOS] link to "commercial support" page isn't really helpful
by Les Mikesell 23 Jun '09

23 Jun '09

Sorin Srbu wrote: > >> p.s. let me make it clear why i'm being so obnoxious at the moment >> about this. a local company currently supports their software suite on >> linux on suse only. they're getting more call for RH support. i'd >> like to suggest they consider centos because i might get some support >> business out of it. as part of their consideration, they will >> undoubtedly go to centos.org and poke around, and i want them to be >> happy with what they read there, and not be scared off. and maybe, >> out of the goodness of their hearts, they'll donate to centos because >> they like it so *everybody* wins. > > With that said, any commercial company needing a linux OS with paid > support and that likes CentOS, should go for RHEL as a first choice; CentOS > is after all a clone of RHEL. > > On another track, CentOS is a very mature enterprise OS and puts other > similar distros to shame IMO. Overall, this is as good as it gets. Like it > or not. And there is always the issue that if Red Hat sees Centos as competition in the supported OS business, they will make the cloning and updates more difficult. -- Les Mikesell lesmikesell(a)gmail.com

3 2

Program to ban sniffers
by Bob Hoffman 22 Jun '09

22 Jun '09

So I have been reading the ssh attack thread and finally want to ask about something. I doubt there is a program like this, but I would love to have a program that listens at common ports that I do not use at all...and only allow that program to listen to it, especially the usual ssh port (using a different one for real ssh)... That program would then, upon receiving a 'sniff' or 'user' would then add that ip to the deny hosts lists..for either a long or short time. Using this would seem like a win as you can easily grab someone before they can get somewhere one hopes. Also, by opening up a few other ports that are unusual like 8561....well, if someone sniffs that it could be a 3 day ban or a month... In other words, anyone hitting those ports that are not being used at all except by our sniff protector, would allow instant banning. So...does something like this exist?

10 13

Need to rebuild installation CD
by Chadley Wilson 22 Jun '09

22 Jun '09

Hi All, I would be lying if I said I am a newbie, but I am rusty so please bear with me. I am looking for a how-to for Redhat or Centos to remake the installation CD. First let me explain: I have an installation disc supplied to me, with centos 5.2 which has kickstart, post and pre installation scripts which run. The problem we have is that the CD does not support our CDROM (it8213). I have managed to compile the driver from the sources, and I have a boot stiffy. So I have managed to load the server, the problem is that we need to load about 10 of these server every week and the Linux guru (me) is not always able to drop his work and load servers. I need to implement the driver on the installation CD so that the kickstart file is read and run Is there a way to hack around this problem? Can anyone guide me through this process or give me a work around please. Pinnacle Technology Holdings E-Mail Disclaimer: This e-mail is confidential and intended solely for the use of the individual(s) to whom it is addressed. Any views or opinions presented are solely those of the author and do not necessarily represent those of Pinnacle Technology Holdings any of it's divisions or affiliates. If you are not the intended recipient, be advised that you have this e-mail in error and that any use, dissemination, forwarding, printing, or copying of it is strictly prohibited.

10 23

Filesystem backup?
by Rafał Radecki 22 Jun '09

22 Jun '09

Hi all. I'm currently having a following problem: I have only ssh connection to a CentOS 5.2 system, there are two harddiscs on it. One stores the system (/ filesystem) and the other should be used to help restore the system in case of first disks' failure. I thought that maybe dump would be a good utility to make it. But in only works on read-only filesystems. In one article I've read that making a snapshot of the / filesystem (then it wouldbe read-only) and backing it could help. But aren't snapshots limited to logical volumes (LVM)? My friend told me to use rsync to back up the entire / filesystem to the second disk and then in case o failure the system from the copy should boot ok. Could anyone provide any suggestions? I don't have physical contact with the machine so for example RAID 1 isn't a possible option/ Any help will be very kindly appreciated. With regards, R.

5 9

Error while installing packages
by Joseph L. Casale 22 Jun '09

22 Jun '09

While installing some deps on a fresh system, I am getting the following errors: Running Transaction Installing : cyrus-sasl-devel [ 1/10] Installing : alsa-lib [ 2/10] /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcf.so. /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcfssl.so. Installing : lzo [ 3/10] /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcf.so. /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcfssl.so. Installing : python-devel [ 4/10] Installing : openldap-devel [ 5/10] /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcf.so. /sbin/ldconfig: Cannot mmap file /usr/lib/libvmcfssl.so. Installing : gdbm-devel [ 6/10] Installing : alsa-lib-devel [ 7/10] Installing : libtiff-devel [ 8/10] Installing : db4-devel [ 9/10] Installing : lzo-devel [10/10] Anyone know why this is happening and how to deal with this? Thanks! jlc

1 1

Wifi connection finally solved
by Sorin Srbu 22 Jun '09

22 Jun '09

After a year or so of trying to get wifi-cards of various brands and chipsets to work, today it finally happened! I got my 3com 3CRPAG175 to jump to it and connect to the department WPA2 AP! I wouldn't have done it without your help. Thanks all! One question though, should it really take upwards of a minute or so till the NetworkManager says it's now connected?? -- BW, Sorin ----------------------------------------------------------- # Sorin Srbu [Sysadmin, Systems Engineer] # Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 >3 signals> GSM # Div of Org Pharm Chem, Mobile: +46 (0)701-718023 # Box 574, Uppsala University, Fax: +46 (0)18-4714482 # SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b # Web: http://www.orgfarm.uu.se ----------------------------------------------------------- # () ASCII ribbon campaign - Against html E-mail # /\ # # MotD follows: # CentOS: Enterprise Linux for the rest of us.

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Re: [CentOS] link to "commercial support" page isn't really helpful
by Robert P. J. Day 22 Jun '09

22 Jun '09

On Mon, 22 Jun 2009, Sorin Srbu wrote: > "Commercial support is currently unavailable, although this is being > investigated by the community. The difficulty is that CentOS is a > volunteer run effort." > > Don't overreact Spiro. I really like your blurb, but the difficulty > sentence has a negative ring. Please rephrase that single line and > you get a gold-star. ;-) > > I see Day's point, this is really a "soft value", the touchy feely > stuff, nothing technical, and it's not about lying either, it just > sounds negative, that's all. that is *exactly* the point i was trying to make -- words have emotional content, so avoid the ones with the *wrong* emotional content. and, yes, when it comes to promoting a product, sometimes it *does* come down to touchy feely stuff. rday p.s. let me make it clear why i'm being so obnoxious at the moment about this. a local company currently supports their software suite on linux on suse only. they're getting more call for RH support. i'd like to suggest they consider centos because i might get some support business out of it. as part of their consideration, they will undoubtedly go to centos.org and poke around, and i want them to be happy with what they read there, and not be scared off. and maybe, out of the goodness of their hearts, they'll donate to centos because they like it so *everybody* wins. does that clear things up a bit? :-) -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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