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Hacking Issue
by Jennifer Botten 27 Sep '11

27 Sep '11

Hi, I am having an issue with someone accessing our server via a SIP/VOIP connection. I have changed my iptables rules to drop all UDP traffic from and too this IP address, but this traffic seems to still run through my server. These are the iptables rules that I current have on the server. -A INPUT -i eth0 -s 209.61.231.42 -p udp -j DROP -A INPUT -i eth0 -d 209.61.231.42 -p udp -j DROP Regards Jennifer Botten ETECH

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Video capture on CentOS (6)
by Mathieu Baudier 27 Sep '11

27 Sep '11

Hello, I need to do some analog video capture and I was wondering what is the status of this in CentOS 6. The last information I could find was here (obviously for CentOS 5): http://lists.centos.org/pipermail/centos/2009-September/082521.html Could anybody recommend a not-too-expensive video capture cards (PCI, USB, fireWire, ...) which would be well supported (drivers easily available in base, ElRepo, or not too complicated to build). Thanks in advance! Mathieu

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Perl module installed via CPAN but its is not found
by TE Dukes 27 Sep '11

27 Sep '11

Hello, I am trying to rebuild a zoneminder rpm. It calls for the module perl(Sys::Mmap). I installed via CPAN but when I run rpmbuild --rebuild zoneminder-xxxxxx, it tells me the above module is needed. Seems I ran into this once before and fixed it, but I can't remember what I did. I have searched for two days now and can't find anything of help. TIA Eddie PS If I can get this zoneminder rpm to rebuild, I will post the location for d/l. It is zoneminder 1.24.4

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x86_64.rpm v. i686.rpm
by TE Dukes 26 Sep '11

26 Sep '11

Just curious why there are two types of rpms for some packages. Just got my first 64 bit machine. Which should I be installing? Both? TIA Eddie

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Sort logfiles on common lines?
by Dotan Cohen 26 Sep '11

26 Sep '11

I have a huge mysql.log file full of errors. I'd like to sort it by the most common line, and work from there. I did go through the manpage for sort, and googled a bit, but I found nothing relevant. Here is an example of the output: [root@ log]# tail mysqld.log 110925 11:05:35 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_summary_ad_hourly.MYI'; try to repair it 110925 11:05:35 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_summary_ad_hourly.MYI'; try to repair it 110925 12:05:28 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 12:05:28 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 12:05:28 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 12:05:28 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_summary_ad_hourly.MYI'; try to repair it 110925 13:09:43 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 13:09:43 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 13:09:43 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_intermediate_ad.MYI'; try to repair it 110925 13:09:43 [ERROR] /usr/libexec/mysqld: Incorrect key file for table './ox_data_summary_ad_hourly.MYI'; try to repair it [root@ log]# wc -l mysqld.log 20686 mysqld.log [root@ log]# cat mysqld.log | grep ERROR | wc -l 20332 [root@ log]# Is there a way to get the most common (unique) lines of the file? By the way, I'm not sure if this is RHEL or CentOS, or which version: [root@ log]# uname -a Linux example.com 2.6.18-194.32.1.el5xen #1 SMP Wed Jan 5 18:44:24 EST 2011 x86_64 x86_64 x86_64 GNU/Linux [root@ log]# uname -o GNU/Linux [root@ log]# I assume that it is one of these, as Yum is installed. How would I find out? Thanks! -- Dotan Cohen http://gibberish.co.il http://what-is-what.com

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Files being modified in /bin/
by Micky L Martin 26 Sep '11

26 Sep '11

For the binary experts. I have a situation here. Something hideously but continuously is modifying the /bin/ executables as common as coreutils and net-tools. I can verify that from md5sum. First thing I checked was 'ls' and it has a checksum mismatch. So I removed it and reinstalled it. Then I moved the file somewhere else to cross bisect it. I did a hexdump on original ls file and the modified file, and there was some 700 lines of hex code additional in the modified file. Then I set a cron to check and do md5sum on all system files and after half an hour, I go a report back. Files modified. This time when checked the hex dump of newly and earlier modified files, they were the same. Exact same! Because rpm and rpmverify also seemed to have been modified so I cannot trust 'rpm -V' package verification. Already did lsof and process tracing but to no avail. Does anyone have any idea how to find that culprit? -Micky.

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Firewalling outbound connections...
by John Doe 26 Sep '11

26 Sep '11

Hi, would anyone know a soft to firewall outbound connections (applications phoning home, etc...). It would detect an unknown (to him) app that tries to connect to the outside world and it would popup a allow/deny request...AppArmor might be a bit overkill... Anyone have any experience with Systrace, TuxGuardian or Zorp GPL...? Thx, JD

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External Dial-up Modem
by Graham Johnston 26 Sep '11

26 Sep '11

I am having an issue with Centos 6 and an external USRobotics modem. We use the modem as part of a last resort SMS paging system. Across multiple Dell servers, different models, I can't not get the modem to respond to simple AT commands while using Minicom. At the same time if I connect the server to a console port on a switch I can successfully access the switches serial console. So I know the serial port itself is working. The modem still works fine if connected to a Centos 5 server. Any thoughts? Graham Johnston Network Planner Westman Communications Group 204.717.2829 johnstong(a)westmancom.com <mailto:johnstong@westmancom.com> P think green; don't print this email.

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this is strange and dark
by fakessh 26 Sep '11

26 Sep '11

hello admin This is strange and dark: it receives more than one hundred updates and deposits are still not updated are welcome ... -- http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x092164A7 gpg --keyserver pgp.mit.edu --recv-key 092164A7 http://urlshort.eu fakessh @

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This doesn't make sense
by Thomas Dukes 26 Sep '11

26 Sep '11

Just got my Lenovo TS130 with a Xeon E3-1225 Processor, 4GB RAM, blah, blah, blah...... It won't boot CentOS 6.0 64 bit, Scientific Linux 64 bit 6.1, but will boot 32 bit CentOS 6.0. Any ideas? Otherwise, its going back to Amazon Monday and I'm done. Will keep my 5.7 Centos boxes until they rot! TIA

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