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  • Tunneling traffic through a proxy using SSH - what does the proxy server see?

    - by nilu
    If I am accessing information (in a browser or via bittorent) through an SSH tunnel, what info will then be possible to obtain on the SSH/proxy server itself? As far as I have understood, the information between the proxy server and my computer is encrypted, but is it not possible for the SSH server admin to obtain info about the traffic? The SSH session requires my credentials, so my guess would be that the server admin would be able to obtain any information about my network usage.

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  • SQLS Timeouts - High Reads in Profiler

    - by lb01
    I've audited a SQLS2008 server with Profiler for one day.. the overhead didn't seem to trouble this new client my company has. They are using a legacy VB6 application as a front-end. They're experiencing timeouts once SQLS RAM usage is high. The server is currently running x64 sqls2008 on a VM with nearly 9 GB of RAM. SQL Server's 'max server memory option' is currently set to 6GB. I've put the results of the trace in a table and queried them using this query. SELECT TextData, ApplicationName, Reads FROM [TraceWednesday] WHERE textdata is not null and EventClass = 12 GROUP BY TextData, ApplicationName, Reads ORDER BY Reads DESC As I expected, some values are very high. Top Reads, in pages. 2504188 1965910 1445636 1252433 1239108 1210153 1088580 1072725 Am I correct in thinking that the top one (2504188 pages) is 20033504 KB, which then is roughly ~20'000 MB, 20GB? These queries are often executed and can take quite some time to run. Eventually RAM is used up because of the cache fattening, and timeouts occur once SQL cannot 'splash' pages in the buffer pool as much. Costs go up. Am I correct in my understanding? I've read that I should tune the associated T-SQL and create appropriate indices. Obviously cutting down the I/O would make SQL Server use less RAM. OR, maybe it might just slow down the process of chewing up the whole RAM. If a lot less pages are read, maybe it'll all run much better even when usage is high? (less time swapping, etc.) Currently, our only option is to restart SQL once a week when RAM usage is high, suddenly the timeouts disappear. SQL breathes again. I'm sure lots of DBAs have been in this situation.. I'm asking before I start digging out all of the bad T-SQL and put indices here and there, is there is something else I can do? Any advice except from what I know (not much yet..) Much appreciated. Leo.

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  • Using SSH, transfer webURL to remote machine

    - by AlanTuring
    Hi so i was doing some research in the library so i could use some pictures later on my Desktop computer in my room. I have space on my Lab account which i usually SSH into, and i was wondering if URL's can be directly transferred over to a remote machine and saved on the hard disk. I was thinking something like this: scp http://click.si.edu/images/truncatedurl.jpg /home3/etc.../filename.jpg is this possible? Thanks in advance.

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  • Windows 7 autorun enabled... yet disabled?

    - by a2h
    The checkbox "Use AutoPlay for all media and devices" is checked. Yet, at some point in time, my computer has stopped giving me AutoPlay prompts. I can't really elaborate beyond this because that's basically all there is to observe. Does anyone know of a solution?

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  • Can I disable the PNP functionality on Windows XP?

    - by Brad
    The reason I want to do this is most of the time I have the computer plugged into a 52" LCD in another room displaying information. Occasionally I need to update the software and to do so I need to see what I am doing so I plug a monitor in locally. Problem is that it automatically adopts the device capabilities of the new monitor and thus changing the settings for the large screen. I then have to go to a networked administration panel for the software to update the resolution settings.

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  • Application to automatically switch between two applications in Windows

    - by OverloadUT
    Does an application exist that will cause the computer to switch (bring in to focus) between two different applications, on a timer? This is for Windows 7. I need this for a screen that will display publicly to customers. I want the screen to switch between two different applications every, say, 30 seconds. I figure there are enough businesses out there will customer-facing monitors these days that something simple like this must exist!

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  • Why can't I share a folder on Vista?

    - by Ken
    On Windows Vista, I right-click on a folder, Properties, Sharing tab, and either "Advanced Sharing" or "Share"-"Share" causes an error: Windows File Sharing This program will not run Access is denied. Close My user account is an "administrator" on this machine. I think this behavior changed since my computer was added to the new domain recently. I have other folders shared (from long ago), and they continue to be shared just fine.

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  • Windows 2003 X64 Std page file usage

    - by duhaas
    Just trying to understand why I'm seeing what I'm seeing on this system. Pagefile performance counters are telling me i'm @ about 1.5% used with my page file, settings for the file are 2GB-4GB, but task manager was showing 13GB usage: Oddly enough, it just sunk down: This machine has IBM DB2 9.5 workgroup edition running on it. Thoughts??? Actually, just learned the developer had just stopped DB2, hence the huge drop, just not understand the difference in the PF usage in task manager vs perf counters?

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  • trouble when shutdown or restart in windows xp getting a black screen asking to try and start windows normally or safe mode than it runs a chk disk

    - by Brenda D Thomas
    I recently reinstalled windows xp on my dell latitude d410 laptop, everything works fine as long as I don't shut down, when I do, I get a black screen with a list of choices, it gives me the option of trying to start windows normally or different safe modes, than a blue screen comes up and runs a check disk, it even ask me to pick a restore point the last time, which I did, I'm afraid to turn the computer off or restart it, what could be wrong?

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  • Shared Hosting, UID, GUID set as Apache

    - by concerncitizen
    Hello, I'm on shared hosting and today i discovered there are some backdoor script.. in .htaccess and a php file. So i went to check via FTP, cannot edit nor delete. So i checked with direct admin.. the file permission(GUID, UID) is set by APACHE while rest of file is set by my username, So my question now is.. the trojan did this is originated from my computer or host side?

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  • Enabling "USB Printing Support" in Windows 7

    - by Kevin Dente
    I'm trying to use an old parallel-port based printer with a USB-to-parallel port adapter on Windows 7. When I plug it into the USB port on the computer it's listed as an unrecognized device. I know that these cables typically use the "USB Printing Support" driver with makes USB ports show up as printer ports in the printer dialog. Is there a way to manually add USB Printing Support to Windows 7, since it isn't being added automatically?

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  • Well....a ghost lives in my server...

    - by tsgiannis
    Hello to every body and greetings from Greece I have a rather unusual situation and i am running out of ideas. I have this old server (IBM x205 - P4 2.4Ghz,3xSCSI 36gb) and i was about a year ago i decided to use it as an additional domain controller,fax & file server...for this task i had a Delock 70154 SATA card along with 2x320 SATA II HDDs Everything was going super smoothly until about 3 weeks ago. I was on a trip and i was informermed when i got back that the server was found frozen...well i considered it was a glitch since a simple powerdown power up fixed everything.Again 2 weeks ago another freeze situation....it got suspicious but again power down power up everything was running.... Last again it frozen and when i power it up it came with a message that the Domain services could not start due to NTDS corruption....booting in safe mode revealed that there was an issue with the SATA Raid (degraded). After a lot of searching i degraded the server...cleaned Active Directory and pulled both HDDs out (one of these was really BAD ) and recovered my files (i had some problems with ho Delock handles the redudant HDD). Right now my server is vanilla simple...with only what the factory installed and here is where the fun begins. Everyday when i arrive at the office i find this particular machine dead..and i mean total dead...just a black screen and nothing else...the cpu fan is working ,the psu is working .keyboard and mouse are dead(they also lock my kvm) ...network is dead.... the machine is DEAD. I power it down forcilly ...i power it up and for the 8 hours i am in the office it works,either idling or running some kind of diagnostic...when i leave the office after some time..it maybe half an hour ...it maybe 4 hours the machine dies...at least this is the information the event log shows (" the previous shutdown at xx:xx:xx was unexpected) Well i must admit i am runnig out of ideas.... I have tried Memtest....nothing Passmark burn in test.....nothing Carefull study of the event log.....nothing Set Instead of restart..BSOD....nothing Power sceheme to sleep...all set to never. i know there are a lot of other tools that heavily stress a machine like occt but .... the machine is old...today i will give them a try nevertheless ..... One idea is to reformat it...but ... i really like to find what is causing this because i could get to a situation that everything is working for a while and kaboom...one day again is dying.. I really need a helping hand and every opinion / idea is well welcomed.... iknow the obvious solution is to never leave the office but....i have a life...sory server...:) P.S this situation with the machine dying some time after is going on for about one week...everyday i would set either the RAID to rebuild....or to copy/recover files and while everythig was working

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  • scp stalls and ssh sessions freeze up (but eventually start again)

    - by coleifer
    I am running ubuntu on various computers on a home network. Some are on 9.04x64, some 10.04x64 and one 9.04x32. Running scp with a large file starts out at 2.1 mbps and drops down to about 200k, stalling and dropping until the transfer is complete. I've noticed this when I have a secure shell open on any of these servers as well. I have tried this with 2 different routers, both brand new, different brands.

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  • Is it possible to use a PC as a external drive via USB?

    - by homemdelata
    I have a bluray player that has a USB interface that allows me to plug external hard drives and pendrives for me to play movies or music files. I was wondering if it's possible to have the PC or notebook or any other computer-like device using a USB-USB cable and make the bluray player detects this as an external drive. Note: I'm using a bluray player as example but it can be the same for DVD players, TV or sound sytems.

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  • How to figure out disks performance in Xen?

    - by cpt.Buggy
    So, I have a Dell R710 with PERC 6/i Integrated and 6 450Gb Seagate 15k SAS disks in RAID10, I have 30 Xen vps working on it. Now I need to deploy second server with same hardware for same tasks and I want to figure out maybe it's a good idea to use RAID5 instead of RAID10 because we have a lot of "free" memory on first server and not so much "free space". How do I find out disks performance on first server and find out could I move it to RAID5 without slowing down of whole system?

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  • Firefox password manager - multiple logins for HTTP authentication

    - by pbarney
    When you're prompted to login to a site using HTTP authentication (the kind with the pop-up box requesting username/password), Firefox's password manager populates it with only the first stored password for that domain. Is there a way to have Firefox prompt for WHICH account should be used? It is unlike the normal HTML login forms in which you can just press the down arrow to select from multiple login accounts.

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  • How to determine where debian package was sourced

    - by user169309
    How would I trace out which archive(s) in the sources.list a given installed deb package was or (could be) sourced from? I understand that the same package may be indexed by multiple archives. Does "aptitude" log any of this type of information when its installing packages? My aim is to pare down my current sources.list to the minimum set of archives needed to maintain the current set of installed packages.

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  • Opscenter repair service times out. ERROR: Requested range intersects a local range [...]

    - by jlemire-zs
    My production cluster had the repair service enabled since april 16th with the default 9 days time to completion and repairs would complete properly. However, since may 22nd, it is being disabled automatically by Opscenter: From /var/log/opscenter/opscenterd.log: [...] 2014-06-03 21:13:47-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4019838962446882275L, -4006140687792135587L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: More than 100 errors during repair service, shutting down repair service 2014-06-03 22:16:44-0400 [zs_prod] INFO: Stopping repair service [...] From /var/log/opscenter/repair_service/zs_prod.log: [...] 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) has failed 1 times. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: 101 errors have ocurred out of 100 allowed. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: More than 100 errors during repair service, shutting down repair service 2014-06-03 22:16:44-0400 [zs_prod] INFO: Stopping repair service On the nodes on which the repair fails, from /var/log/cassandra/system.log: ERROR [RMI TCP Connection(93502)-10.1.0.22] 2014-06-03 20:12:28,858 StorageService.java (line 2560) Repair session failed: java.lang.IllegalArgumentException: Requested range intersects a local range but is not fully contained in one; this would lead to i mprecise repair at org.apache.cassandra.service.ActiveRepairService.getNeighbors(ActiveRepairService.java:164) at org.apache.cassandra.repair.RepairSession.<init>(RepairSession.java:128) at org.apache.cassandra.repair.RepairSession.<init>(RepairSession.java:117) at org.apache.cassandra.service.ActiveRepairService.submitRepairSession(ActiveRepairService.java:97) at org.apache.cassandra.service.StorageService.forceKeyspaceRepair(StorageService.java:2620) at org.apache.cassandra.service.StorageService$5.runMayThrow(StorageService.java:2556) at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) These errors, which only occurs if the repair service is running, are the only errors these nodes experience. Outside of the repair task, the Cassandra cluster works perfectly. I am running Opscenter 4.1.2 with a 6 nodes DSE 4.0.2 cluster installed on linux virtual machines. The nodes run a vanilla installation of Ubuntu Server 12.04 64-bit and DSE was installed and secured according to the provided installation documentation. I have been experiencing that problem on my development cluster for a while too (with DSE 4.0.0, 4.0.1 and 4.0.2), but I thought this was because of some configuration error on my part. The problem has appeared spontaneously at some point too. The Cassandra cluster has been working very smoothly with a good write throughput. It is very stable and has enough resources to work with. We did not notice any problems with the applications that depend on it.

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  • centos freezes with this error kernel: ata1.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x0

    - by lakshman
    0 down vote favorite share [fb] share [tw] I am using centOs 5.5 version with raid 1 configuration the server freezes and goes to non response . the only thing i found on messages file is kernel: ata1.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x0 The server is built recently Please let us know what is the problem the hard disk details are Model Number: ST500NM0011 Serial Number: Z1M02LT7 Firmware Revision: SN02

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