CLOSE Dave | 31 Jul 21:03 2014

Broadcasts and netmask

I have a Fedora 20 machine which is receiving UDP broadcast packets at
regular intervals on a high port. No program is presently listening
for these packets. If I run, "tcpdump -iany port 29531", I see each
of the packets arriving just as I expect.

But if I then use Ncat as a surrogate for an application, "nc -lup
29531", I sometimes don't see anything! Why not? (More details
below.) What obvious thing am I missing?

The machine has ten Ethernet ports, two Broadcom BCM5716 and eight
Intel 82576. The Broadcom ports are using the bnx2 driver, the Intel
ports use the igb driver.

Connecting the cable from the broadcast sender to any one of the ports,
I get the exactly same behavior. Without assigning the port an address,
tcpdump shows that the UDP broadcast packets are received but they are
not forwarded to an application. For example,

  # ifup eth2
  # ifconfig eth2
  eth2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
          inet6 fe80::92e2:baff:fe32:f8a8  prefixlen 64  scopeid 0x20<link>
          ether 90:e2:ba:32:f8:a8  txqueuelen 1000  (Ethernet)
          RX packets 3892  bytes 3552566 (3.3 MiB)
          RX errors 0  dropped 0  overruns 0  frame 0
          TX packets 652  bytes 230557 (225.1 KiB)
          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
          device memory 0xdc7c0000-dc7dffff
  # tcpdump -ieth2 udp port 29531
  tcpdump: WARNING: eth2: no IPv4 address assigned
(Continue reading)

pgaltieri . | 31 Jul 17:54 2014
Picon

SELinux contexts

I received a SELinux alert today which said:

SELinux is preventing /usr/local/bin/snort from search access on the directory logs.

One of the options was to do:

semanage fcontext -a -t FILE_TYPE 'logs'

(lots of FILE_TYPEs)

followed by

restorecon -v 'logs'

So here is what happens:

ll -Zd logs
drwxr-xr-x. root root unconfined_u:object_r:file_t:s0  logs

sudo semanage fcontext -a -t var_log_t 'logs'

sudo restorecon -v 'logs'
restorecon:  Warning no default label for /media/NSM/NSM-SENSOR-2/logs

ll -Zd logs
drwxr-xr-x. root root unconfined_u:object_r:file_t:s0  logs

Nothing has changed.

So what do I need to do to set the file context correctly?

Paolo
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Robert Moskowitz | 31 Jul 02:26 2014

lock screen from keyboard in ldxe

System is f19 remix on armv7 (Allwinner A20).

The <windows key + l> which is what I use in F20 on x86 with Gnome.

So does ldxe use a different lock screen keystroke, or is something else 
going on here.

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Mike Wright | 30 Jul 20:40 2014

javafx

Hi all,

Does anybody know of any plans to package javafx for fedora?  It 
apparently exists somewhere in RedHat.

It provides a top level Window object for containing scenes or pop-ups.

I have an app that won't run without it.

Thanks for any information,
Mike Wright
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Patrick O'Callaghan | 30 Jul 13:19 2014
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Re: using USB memory

On Wed, 2014-07-30 at 09:04 +0300, Angelo Moreschini wrote:
> thank you ,
> 
> both of you helped me

Glad to hear it, however please note the part about top-posting.

poc

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Robert Moskowitz | 29 Jul 20:58 2014

Importing mail archive into Thuderbird

I am asking this here, as my system is F20 with Thunderbird 24.7.0.

I have downloaded an month's archived messages for Centos-arm and want 
to import them into Thunderbird where I could then respond to them more 
easily.

I tried the Tools>Import but when I select email, nothing is listed in 
the dialog box.  So how might I do the import?  Where might i find 
instructions?

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bruce | 29 Jul 19:11 2014
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abrt questions??

Hi.

Doing some tests on fed/centos boxes..
Running a test app, that in turn kicks off a bunch of python apps..
The test is long running. for hours!

However, somewhere along the way, the py apps die/crash. In looking
over the /var/log/messages logs, I see the abrt indicating it's
captured data for the crash, but it seems to also then delete the data
it collected.

An example of what I'm seeing is below.

I'm trying to figure out what parameters I can set, and where I need
to set the attributes, to be able to capture/analyse the resulting
data to figure out why the test py app is crashing..

Thoughts/comments would be useful..

Thanks

Jul 29 08:37:07 dell2 abrt: detected unhandled Python exception in
'/home/ihubuser/crawltest_denny/rprofParse.py'
Jul 29 08:37:07 dell2 abrtd: New client connected
Jul 29 08:37:07 dell2 abrtd: Directory
'pyhook-2014-07-29-08:37:07-27994' creation detected
Jul 29 08:37:07 dell2 abrt-server[29478]: Saved Python crash dump of
pid 27994 to /var/spool/abrt/pyhook-2014-07-29-08:37:07-27994
Jul 29 08:37:07 dell2 abrtd: Executable
'/home/ihubuser/crawltest_denny/rprofParse.py' doesn't belong to any
package and ProcessUnpackaged is set to 'no'
Jul 29 08:37:07 dell2 abrtd: 'post-create' on
'/var/spool/abrt/pyhook-2014-07-29-08:37:07-27994' exited with 1
Jul 29 08:37:07 dell2 abrtd: Deleting problem directory
'/var/spool/abrt/pyhook-2014-07-29-08:37:07-27994'
Jul 29 08:40:29 dell2 abrt: detected unhandled Python exception in
'/home/ihubuser/crawltest_denny/rprofParse.py'
Jul 29 08:40:29 dell2 abrtd: New client connected
Jul 29 08:40:29 dell2 abrtd: Directory
'pyhook-2014-07-29-08:40:29-6868' creation detected
Jul 29 08:40:29 dell2 abrt-server[7944]: Saved Python crash dump of
pid 6868 to /var/spool/abrt/pyhook-2014-07-29-08:40:29-6868
Jul 29 08:40:29 dell2 abrtd: Executable
'/home/ihubuser/crawltest_denny/rprofParse.py' doesn't belong to any
package and ProcessUnpackaged is set to 'no'
Jul 29 08:40:29 dell2 abrtd: 'post-create' on
'/var/spool/abrt/pyhook-2014-07-29-08:40:29-6868' exited with 1
Jul 29 08:40:29 dell2 abrtd: Deleting problem directory
'/var/spool/abrt/pyhook-2014-07-29-08:40:29-6868'
Jul 29 08:40:47 dell2 abrt: detected unhandled Python exception in
'/home/ihubuser/crawltest_denny/rprofParse.py'
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lejeczek | 29 Jul 16:11 2014
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confine user(s) to a core with systemd + gcgroup

hi everybody

I thought I could easily (as easily as I could do that with 
libcgroup) permanently restric a user to a specific cpu core.

I thought it would be CPUAffinity responsible for it either 
in systemd-user-sessions or(and) in systemd-logind

but it does not work,
is it possible to have user(s) sessions permanently 
restricted in this way? so his/her processes would be 
executed only on given core?
if yes then how would you do this? please shed some light

thanks
P
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Angelo Moreschini | 29 Jul 11:49 2014
Picon

using USB memory

Hi,

I have some problems to use USB memories .

Fedora recognize automatically thr USB pen  that I plug inside a USB socket:

..... I can see it as 
Bus 002 Device 003: id 0781:5575 SanDisk Corp
as result of command "lsubs".

I can also go inside it using Nautilus, and to work with the files stored 
inside it *but only if I use Nautilus*.
Instead I cannot use this pen by the terminal (using commands line).

If I execute :
ls /mnt/dir_where_is_mounted,
 I don't see the files that are inside the pen.., .. the output is not rigth ....


I thougth it necessary to mount manually the USB pen for achieve this targhet
but I didn't get success also in this way...

Can some one explain me how tho work with my USB  pen *by command line*?

We need (manually)  to mount the USB devices (memory flash, Hard Disk, ..) to achieve some purpouse ?

Regards

Thank you
Angelo
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Mike Chambers | 29 Jul 01:14 2014

Email issues

I think my email server is working and accepting emails, but my
workstation that connects to said email server, via evolution and
through dovecot, is no longer receiving emails, and no configurations
have changed.  Although I can get emails, from gmail or whomever.
Wondering if my domain was hacked or something.

-- 
Mike Chambers
Madisonville, KY

"Best little town on Earth!"

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Balint Szigeti | 28 Jul 20:52 2014
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simple DVD read error - ALL DVD

hello

I have two DVDs which contains AVI files. I can't read it in my fedora box but it works in gentoo and windows.

I used the DVD drive and the DVDs before so I don't think it is a HW problem.

I got this in dmesg:
[ 7892.555826] sr 1:0:0:0: [sr0] Unhandled sense code
[ 7892.555834] sr 1:0:0:0: [sr0] 
[ 7892.555836] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 7892.555839] sr 1:0:0:0: [sr0] 
[ 7892.555842] Sense Key : Medium Error [current]
[ 7892.555847] sr 1:0:0:0: [sr0] 
[ 7892.555851] ASC=0x10 <<vendor>> ASCQ=0x90
[ 7892.555854] sr 1:0:0:0: [sr0] CDB:
[ 7892.555856] Read(10): 28 00 00 00 00 00 00 00 02 00
[ 7892.555866] end_request: I/O error, dev sr0, sector 0
[ 7892.555872] Buffer I/O error on device sr0, logical block 0

what shoud I do now?
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Gmane