Discuss May 2006

discuss@lists.centos.org

233 participants
263 discussions

iptables rules
by Abd El-Hameed Ayad 10 Jun '06

10 Jun '06

Hi, I have 2 CentOS servers 82.201.195.123 & 62.139.61.84 I want to deny all ssh logins on port 22 on (62.139.61.84) from any host except from (82.201.195.123) Can anybody tell me such iptables rules to write in /etc/sysconfig/iptables Currently, im using the following rules (on 62.139.61.84) *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -i eth1 -j ACCEPT -A RH-Firewall-1-INPUT -i eth0 -s 82.201.195.123 -j ACCEPT -A RH-Firewall-1-INPUT -m tcp -p tcp --dport 22 -j REJECT -A RH-Firewall-1-INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -i eth0 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited COMMIT But i found that somebody is bypassing these rules & trying to authenticate with unknown (or wrong password) accounts Thanx in advance

5 4

Mouse problems
by Mace Eliason 10 Jun '06

10 Jun '06

Hi I am running Centos 4.3 and I having irratic problems with my mouse. I have the same problems with other versions of centos as well. I have search and tried everything that I could find but still it's not working right. It is a new microsoft laser wireless mouse 6000 For the most part it seems to work okay but it the buttons seem to click on there own a you move the mouse. For example if I click on the menu it drops down as long as the mouse is moving down the menu its fine as soon as I stop it loads what ever progam the mouse is on. Clicking has problems to some time you have to click serveral times to get it to work. Or you click a check box and when you move the mouse off the check box it un checks. I have check the X config file and it is set to what is suggested for usb mice. Any one have similar problems. If I plug in a regular optical usb mouse it works just fine. Mace

2 1

CentOS 4.3 x86_64 xfs module rpm
by Fong Vang 06 Jun '06

06 Jun '06

The xfs kernel modules at dev.centos.org are very handy. There are a couple of xfs modules in the 4.3 x86_64 directory, but I don't think it's for the x86_64 4.3 kernel (2.6.9-34). The latest ones in that directory is for the -22 kernel (I believe this came with CentOS 4.2).

4 9

CentOS 4.x - Multiple gateways
by Tom Brown 06 Jun '06

06 Jun '06

Hi On a multihomed box how can i set different gateways for each NIC? Setting them in the ifcfg-ethx does not seem to make any difference to the routing? thanks

8 10

Received signal 11 during kickstart
by Alfred von Campe 05 Jun '06

05 Jun '06

I recently built a CentOS from the 4.3 ISOs. Now I'm ready to build another 10 systems using kickstart. I took the anaconda-ks.cfg file from the first system I built manually, modified it slightly (see below), and made it available via http. I booted the new system from the first CentOS 4.3 CD and typed the following: boot: linux ks=http://hostname/test-ks.cfg Here are the changes I made to the kickstart file: - Replaced "cdrom" with "url --url http://hostname" - Removed xconfig line (slightly different video HW) - Changed the host name in the network line - Uncommented the partition information The system boots the initial kernel, gets an IP address, gets the kickstart file via http, but then dies with a "installation exited abnormally -- received signal 11" message. I've done this successfully in the past. Can a misconfigured kickstart file cause this problem? How can I debug this? Alfred

7 12

CentOS 3.5 system hanging
by Mark Belanger 01 Jun '06

01 Jun '06

Our very large and very complex application is running on CentOS 3.5 and Solaris. The CentOS machines are hanging about once per day. By "hanging" I mean the system is completely unresponsive either from the console or remotely via ssh. Totally locked. Does anyone have any tips for troubleshooting this sort of problem? -Mark -- Mark Belanger LTX Corporation

2 1

OT - yum missing from a RHEL4 server???
by kevin＠kevinkempterllc.com 31 May '06

31 May '06

Hi List; Sorry for the OT post. However I suspect if anyone outside of RH can help with this question it would be this list. I'm starting a new contract with a shop that knows little about Linux and I'm helping pave the way. I've "inherited" an existing Linux install (RHEL4). I want to setup some tools but I find that yum is not installed. Is this normal for a RH box ? I thought that the RH up2date tool used yum under the covers. Anyhow, is there an easy way to get yum installed on this box ? I do have VNC access - and I can run KDE in the VNC connection even though according to the add/remove software tool KDE is not installed by changing the xstartup file forthat user under ~/.vnc (wierd!!) I suspect the answer is to find & download a yum rpm for redhat and install it via rpm but I want to be sure I dont do something stupid on a client system. Thanks in advance...

5 4

31 May '06

I tested moving a box from Tao 1.0 to CentOS 3.7. All went well, as far as I can tell, with the OS upgrades, but I needed to rpm -ivh --force the desktop-* stuff. This was a minor thing to fix for no real purpose other than to just be doing it. I still get, though, the Tao screens when the graphic login screen appears. I have changed the Application->Settings->Login Screen-> Graphical to Blue Curve. Is there a set of artwork rpms I need or something? I cant't remember, but I think there is something on the original grub splash, also, after rebooting. Not a big deal, but would just like to see if I can tidy this up a bit. Thanks Steve Campbell campbell(a)cnpapers.com Charleston Newspapers

2 2

CentOS4.3 - x86_64 - lockups
by Tom Brown 31 May '06

31 May '06

Hi I have a box that is a Linux LVS project based load balancer running on an 1850 and x86_64 bit version of CentOS. In the past i have never had issues with LVS but then again i have never tried it with x86_64 linux. This box will after a variable about of time, 1 day upto a week or so, stop accepting ssh connections, although http connections will be fine, and then after another period of time http will also stop being accepted/forwarded. It remains pingable but the only option is a power cycle. There is nothing in the logs as to why and this box was doing this when it was a 4.2 machine but it has recently been updated to 4.3 but the issue remains. There is nothing obvious in any logs and i can run x84_64 happily on other 1850's although they are not LVS's. The only thing that is showing up in the logs is this (scsi0:A:6:0): data overrun detected in Data-in phase. Tag == 0x3. (scsi0:A:6:0): Have seen Data Phase. Length = 50. NumSGs = 1. sg[0] - Addr 0x030910000 : Length 50(scsi0:A:6:0): data overrun detected repeated lots - does anyone know what that might be but also what could be the cause of this? thanks

1 0

RE: [CentOS] Choice of FTP server
by Alex Palenschat 31 May '06

31 May '06

> -----Original Message----- > From: centos-bounces(a)centos.org > [mailto:centos-bounces@centos.org] On Behalf Of Rodrigo Barbosa > Sent: Tuesday, May 30, 2006 10:54 AM > To: CentOS mailing list > Subject: Re: [CentOS] Choice of FTP server > > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Tue, May 30, 2006 at 10:23:34AM -0500, Alex Palenschat wrote: > > I have taken over a number of RH/FC/CentOS servers recently. I am > > trying to upgrade all of them to CentOS 4.3 and configure > them to only > > use software that can be managed via yum/apt repositories. > One of the > > choices made by my predecessor was the pure-ftpd server > over vsftpd. I > > cannot find a repo to get this rpm from and am wondering if > anyone on > > the list has any practical experience with both and can > give me some > > insight as to whether it would be better to run vsftpd > (more likely to > > be updated after a security update via yum) versus > pure-ftpd (very few > > updates needed in it's history). > > > > pure-ftpd should be avaliable on Karan-extra repository. > See centos.karan.org > > - -- > Rodrigo Barbosa <rodrigob(a)suespammers.org> It sure is. Thanks. Have to start checking that one as well. Now if I can just find one that has the 3.x version of Shorewall... Alex Palenschat

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Discuss May 2006