Discuss February 2009

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251 participants
224 discussions

any softwares can capture port traffic in graph
by adrian kok 27 Feb '09

27 Feb '09

Hi Any softwares can capture traffic in graph? eg: port 80 Thank you Send instant messages to your online friends http://uk.messenger.yahoo.com

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Need to test serial port connection
by Anne Wilson 27 Feb '09

27 Feb '09

I recently bought a new UPS, and I'm attempting to use nut to monitor it. Following setup instructions everything seemed to go well until it came to testing the connection, which failed. There is just one serial connector on the computer, so I set it to monitor /dev/ttyS0. Either that is wrong, or communication is failing. I've been told to try minicom to monitor it, but I'm not familiar with minicom (or any similar app), so again, I may be wrong in the way I'm trying to use that. I was told that unconnecting the device, then re-connecting it should give me a raft of output to the terminal - I saw nothing. Could someone please give me idiot-level instructions on how to tell whether I'm connecting to the correct port, or whatever other information I need? Thanks Anne

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nightly rsync has started to throw errors
by Ray Leventhal 27 Feb '09

27 Feb '09

Hi all, I perform a nightly snapshot of /home to a USB attached drive scheduled via cron. The system is CentOS 5.2 and only gets attached to the internet periodically for updates, otherwise serves as a samba server to about 20 Windows clients. The rsync command being used is: rsync -av --delete /home/ /media/bkup320G/ and has been working well until a few days ago. Starting with a few days ago, my nightly rsync/cron emails included some errors as shown here: rsync: mkstemp "/media/bkup320G/cprcvs/c/Projects/WindowApps/DLL/HMRControlDLL/.CMDSettingsDialog.cpp,v.I5QnaM" failed: Read-only file system (30) rsync: failed to set times on "/media/bkup320G/cprcvs/c/Projects/WindowApps/DLL/PSIControlDLL": Read-only file system (30) There are multiple issuances of these errors for different files....some files are written just fine. Where there are errors, its always the same Read-only file system (30). Output of df and mount show all filesystems as (rw): # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/VolGroup00-LogVol00 136838136 5518276 124256720 5% / /dev/sdc1 283783548 167456104 101679380 63% /home /dev/sdd1 283783548 4648856 264486628 2% /home/905 /dev/sda1 101086 31745 64122 34% /boot tmpfs 452084 0 452084 0% /dev/shm /dev/sdg1 307663800 171859328 120176040 59% /media/bkup320G # mount /dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) /dev/sdc1 on /home type ext3 (rw) /dev/sdd1 on /home/905 type ext3 (rw) /dev/sda1 on /boot type ext3 (rw) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw) /dev/sdg1 on /media/bkup320G type ext3 (rw) Googling has not been fruitful in this issue and I'm curious what might be the issue. I'd originally thought it might be drive failure on the external (destination) drive, but changing that produced the same errors. We typically backup about 165G overnight, so initial write to a new drive takes a LONG time. Any pointers or suggestions would be greatly appreciated. TIA, -Ray

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Mod Security + CLAMAV -> Problem scan file
by Adriano Frare 27 Feb '09

27 Feb '09

Dear Friends, I has Centos 4 and installed mod_security 1.9.4 on apache. I configurated mod_security to work with clamav using documentation below. http://www.modsecurity.org/documentation/modsecurity-apache/1.9.3/html-mult… But, when I do upload files using Squirrelmail, the module clamav not found files to scan, apache send for clamav NAME FILES differents. LOG AUDTLOG -> MODSECURITY mod_security-message: Access denied with code 500. Error verifying files: File "/tmp/webfiles/20090227-082448-192.168.1.11-" rejected by the approver script "/data/scripts/modsec-clamscan.pl" [severity "EMERGENCY"] mod_security-action: 500 FILES IN directory /TMP/WEBFILES -rw-r----- 1 apache clamav 17408 Fev 27 07:45 20090227-074544-192.168.1.11-ALESP_transmiss__o_de_arquivo.xls -rw-r----- 1 apache clamav 209 Fev 27 07:47 20090227-074718-192.168.1.11-copia_apaga.txt -rw-r----- 1 apache clamav 2046 Fev 27 07:47 20090227-074734-192.168.1.11-button_buy_now.gif -rw-r----- 1 apache clamav 565248 Fev 27 08:10 20090227-081019-192.168.1.11-2008_07_02_Modelo_de_Negocio.doc -rw------- 1 apache clamav 567136 Fev 27 08:10 20090227-081019-192.168.1.11-request_body-fm7R5G -rw-r----- 1 apache clamav 143872 Fev 27 08:19 20090227-081922-192.168.1.11-cronexcel.xls -rw------- 1 apache clamav 145746 Fev 27 08:19 20090227-081922-192.168.1.11-request_body-qKnmIb -rw-r----- 1 apache clamav 143872 Fev 27 08:24 20090227-082440-192.168.1.11-cronexcel.xls -rw------- 1 apache clamav 145749 Fev 27 08:24 20090227-082440-192.168.1.11-request_body-oVdaFT -rw-r----- 1 apache clamav 2046 Fev 27 08:30 20090227-083027-192.168.1.11-button_buy_now.gif -rw-r----- 1 apache clamav 143872 Fev 27 08:30 20090227-083059-192.168.1.11-cronexcel.xls -rw------- 1 apache clamav 145769 Fev 27 08:30 20090227-083059-192.168.1.11-request_body-27efAj There is not files to scan parse among modsecurity and directory /tmo/webfiles Please, I need help. Thanks Adriano

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HylaFax and Com Ports
by Joseph L. Casale 27 Feb '09

27 Feb '09

I need to setup HylaFax which leads to my first question, anyone got an opinion on whether or not to use HylaFax or HylaFax+? Also, I have to setup a Digi serial port server for an external fax modem. Any reco's on a robust unit that won't need to be reset often? Thanks! jlc

4 4

Is GFS for HPC?
by Marcelo M. Garcia 27 Feb '09

27 Feb '09

Hi. Just curious if GFS can be used in a HPC environment, like GPFS or Oracle OCFS2? Thanks Marcelo

5 7

iptables rules to limit attack
by chloe K 27 Feb '09

27 Feb '09

Hi all ks there iptables rules to limit attack? Thank you --------------------------------- Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail

6 7

Anyone successfully using CentOS 5 and a Keyspan USA-19HS USB-Serial Adapter?
by Barry L. Kline 26 Feb '09

26 Feb '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I occasionally need to connect to a serial device and in the past have used minicom and the Keyspan USA-19HS adapter. It has worked flawlessly. Once I upgraded, I could never seem to make this work. The kernel recognizes the adapter, it gets properly assigned as /dev/ttyUSB0, and minicom seems to transmit data to it (as evidenced by the green LED on the device that flashes whenever I hit a keystroke. The problem is, it never returns any data. If I use VMWare to boot up WinXP I can access anything connected to the adapter, but it grinds me to have to boot up 'doze for that purpose. This morning I ran into the problem again and did some googling to see anyone else had this problem. I found this entry in http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/old/patch-2.6.20-git4… Date: Wed Jan 3 15:36:25 2007 +0100 fix for bugzilla #7544 (keyspan USB-to-serial converter) At least the Keyspan USA-19HS USB-to-serial converter supports two different configurations, one where the input endpoints have interrupt transfer type and one where they are bulk endpoints. The default UHCI configuration uses the interrupt input endpoints. The keyspan driver, OTOH, assumes that the device has only bulk endpoints (all URBs are initialized by calling usb_fill_bulk_urb in keyspan.c/ keyspan_setup_urb). This causes the interval field of the input URBs to have a value of zero instead of one, which 'accidentally' worked with Linux at least up to 2.6.17.11 but stopped to with 2.6.18, which changed the UHCI support code handling URBs for interrupt endpoints. The patch below modifies to driver to initialize its input URBs either as interrupt or as bulk URBs, depending on the transfertype contained in the associated endpoint descriptor (only tested with the default configuration) enabling the driver to again receive data from the serial converter. Greg K-H reworked the patch. Signed-off-by: Rainer Weikusat <rweikusat(a)sncag.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de> As you'll note, the keyspan stopped working at 2.6.18, which is the kernel used by CentOS 5. My question is whether or not this bug still exists in CentOS5 or if someone is successfully using the Keyspan with CentOS5. Thanks! Barry -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFJptFUCFu3bIiwtTARAl/sAJ4uWLxJiyCJmHDk5JzH4xZ0l5BTigCdGOgu U2mbgLck+HC/tUjQBqxf5Yk= =JFdo -----END PGP SIGNATURE-----

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Create a Debian Repo Mirror
by Joseph L. Casale 26 Feb '09

26 Feb '09

Anyone know how I can do this w/o rsync? We have a large mirror we made with wget, but I don't see how to prevent wget from fetching anything it has already? Thanks! jlc

2 1

Firefox plugins gone (but only for one user)
by Rob Kampen 26 Feb '09

26 Feb '09

Hi gurus I have a CentOS 5.2 current x86_64 that has Thunderbird and Firefox working well for one user account (my wife) but will not play nice for my account. I have uninstalled thunderbird and firefox (via yum) and re-installed - no change. I have just wiped the .mozilla folder and started afresh, but it still shows no plugins, yet the /usr/lib/mozilla/plugins/ has the libflashplayer.so link etc. How does all this stuff get hooked up. I have previously installed firefox direct from their site and not used the CentOS supplied rpm, but now that RH say the light and provides a current version, I use the yum process to get my firefox installed. Everything was working a week or so ago, but when I tried fixing things yesterday, all went rapidly pear shaped. In firefox I pressed the Check Now button under Firefox > Preferences > Advanced > System Defaults and now its gone and lost all my plugins Any idea how to get them back? Looking on the support.mozilla.com/firefox site provides little linux help and seems oriented to windoze users. Appreciate some insight from those who know how this distro hangs it all together.

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Discuss February 2009