Re: Symantec Endpoint Protection (SEP) for installation on zLinux?

2015-09-09 Thread Philipp Kern

On 2015-09-08 19:03, CHAPLIN, JAMES (CTR) wrote:

Here the sad ending to this problem, our management has decided that
since Symantec or anyone else actively supports an AV Agent for Linux
on the z Platform (s390x), they are moving all Linux based application
off the mainframe to distributive servers by the end of October... Any
good job openings out there ;-(, I am hitting the pavement, future
here not good.


The irony is that - given your email domain - you are working for the
government and any threat to the service is very likely not to be
discovered by AV anyway. Moving back to x86 will increase the attack
surface because standard exploit code is working on the target platform
and doesn't need to be rewritten/retargeted for the System z CPU
architecture. Plus it's incredibly unlikely that they would have a
signature for exploits on System z. (Apart from the fact that they
likely have very few signatures for Linux anyway.)

Yes, they say it's behavioral. I have yet to see a solution there that
works.

Kind regards
Philipp Kern

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Re: Symantec Endpoint Protection (SEP) for installation on zLinux?

2015-09-09 Thread CHAPLIN, JAMES (CTR)
I so much agree with you on this! Real logic does not apply, it's called 
government.

James Chaplin, ITIL® v3 Foundation
Systems Programmer, MVS, zVM & zLinux 

-Original Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Philipp 
Kern
Sent: Wednesday, September 09, 2015 3:56 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Symantec Endpoint Protection (SEP) for installation on zLinux?

On 2015-09-08 19:03, CHAPLIN, JAMES (CTR) wrote:
> Here the sad ending to this problem, our management has decided that 
> since Symantec or anyone else actively supports an AV Agent for Linux 
> on the z Platform (s390x), they are moving all Linux based application 
> off the mainframe to distributive servers by the end of October... Any 
> good job openings out there ;-(, I am hitting the pavement, future 
> here not good.

The irony is that - given your email domain - you are working for the 
government and any threat to the service is very likely not to be discovered by 
AV anyway. Moving back to x86 will increase the attack surface because standard 
exploit code is working on the target platform and doesn't need to be 
rewritten/retargeted for the System z CPU architecture. Plus it's incredibly 
unlikely that they would have a signature for exploits on System z. (Apart from 
the fact that they likely have very few signatures for Linux anyway.)

Yes, they say it's behavioral. I have yet to see a solution there that works.

Kind regards
Philipp Kern

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Re: Symantec Endpoint Protection (SEP) for installation on zLinux?

2015-09-09 Thread Kurt Acker
If agencies are allowed to talk to one another, finding out why Linux on z 
works for folks like this org might be helpful?
http://www.disa.mil/Computing/Mainframe-Hosting/IBM-LINUX

Best Regards,

Kurt Acker 
IBM Smarter Planet, Smarter Data Centers 
Virtualization and Enterprise System Management Technologies


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Re: Bug in cmsfs-fuse?

2015-09-09 Thread Michael Holzheu
Hello Mike,

Thanks for your detailed report.

The CMS file system stores time stamps in local time. The cmsfs-fuse
file system has to report time in UTC to the Linux VFS layer. Therefore
local time has to be converted to UTC for reading and UTC to local time
for writing. IMO this is currently done incorrectly.

In case you are interested, we can provide the corresponding s390-tools patch.

Regards,
Michael

On Fri, 4 Sep 2015 11:18:19 -0400
Michael MacIsaac  wrote:

> Cross-posted to IBMVM and linux-390
>
> Is this a bug in cmsfs-fuse?  It looks like the timestamp of a file created
> on Linux is an hour ahead - note 12:03:12 vs. 11:03:12 below:
>
> On VM:
> -) Link and access a CMS filesystem (THEVIRTM 1191) as F from VM
> -) Create a file with a timestamp:
> ==> pipe cp query time |> thetime fromvm f
> Ready; T=0.01/0.01 10:59:28
> ==> rel f (det
> DASD 1191 DETACHED
>
> On a Linux running on the VM with the CMS disk:
> # vmcp link thevirtm 1191 1191 mr
> # chccwdev -e 1191
> Setting device 0.0.1191 online
> Done
> # lsdasd | grep 1191
> 0.0.1191   active  dasde 94:16   ECKD  4096   70MB  18000
> # mkdir /srv/CMSdisk
> # cmsfs-fuse -a /dev/dasde /srv/CMSdisk
> # date > /srv/CMSdisk/thetime.onlinux
> # fusermount -u /srv/CMSdisk/
> # chccwdev -d 1191
> Setting device 0.0.1191 offline
> Done
> # vmcp DETACH 1191
> DASD 1191 DETACHED
>
> Back on VM:
> ==> vmlink thevirtm 1191
> ==> filel * * z
>   THETIME  ONLINUX  Z1 V 28  1  1  9/04/15
> 12:03:12
>   THETIME  FROMVM   Z1 V 54  2  1  9/04/15
> 10:59:28
> ==> type THETIME  FROMVM   Z
>
> TIME IS 10:59:28 EDT FRIDAY 09/04/15
> CONNECT= 00:06:13 VIRTCPU= 000:00.00 TOTCPU= 000:00.01
>
> ==> type THETIME  ONLINUX  Z
>
> Fri Sep  4 11:03:12 EDT 2015
>
> -Mike M
>
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>

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