Search Results

Search found 43173 results on 1727 pages for 'readers question'.

Page 241/1727 | < Previous Page | 237 238 239 240 241 242 243 244 245 246 247 248  | Next Page >

• Network monitoring solution

  - by Hellfrost

  Hello Serverfault ! I have a big distributed system I need to monitor. Background: My system is comprised of two servers, concentrating and controlling the system. Each server is connected to a set of devices (some custom kind of RF controllers, doesnt matter to my question), each device connects to a network switch, and eventually all devices talk to the servers, the protocol between the servers and the devices is UDP, usually the packets are very small, but there are really a LOT of packets. the network is also somewhat complex, and is deployed on a large area physically. i'll have 150-300 of these devices, each generating up to 100+ packets per second, and several network switches, perhaps on 2 different subnets. Question I'm looking for some solution that will allow me to monitor all this mess, how many packets are sent, where, how do they move through the network, bandwidth utilization, throughput, stuff like that. what would you recommend to achieve this? BTW Playing nice with windows is a requirement.

  Read the article

• IP Address on internet access shared over ad-hoc wifi network

  - by Jacxel

  The Situation When im staying at my girlfriends we both like to have internet access on our laptops but her accommodation don't allow wireless routers. My Question My question is if I set up an Ad-Hoc network to share the internet connection as shown here on How To Geek. Will my laptop be acting as a wireless router or will the connection all go through my laptop as one ip address so it appears to be my computer accessing the webpages etc, that my girlfriend actually is. i would be interested in knowing any additional information that could help sove this problem eg. if connectify would do what i want.

  Read the article

• Howto boot directly into a VirtualBox image?

  - by mawimawi

  I have a running setup as following: Native OS: Windows 7 64bit, 3 Partitions: c: (System) d: (FAT32, here is my vdi file) e: (unformatted) VirtualBox: Fedora 14 running off the vdi file on drive d. Usually this setup is great for me, but sometimes I'd like to run Linux natively, and not inside VirtualBox. Is there a way to boot directly into the vdi file without the Windows overhead? E.g. using a USB stick with some modified Linux Kernel / GRUB that can mount the vdi file directly as "/"? Or copy the contents of my vdi file to the empty partition and somehow use this from VirtualBox (when booting into Windows) AND directly booting into Linux? Hope to get some hints or even howtos. EDIT: yes, sorry. not programming related. I posted the question to serverfault.com (hopefully that's the better site for my question.)

  Read the article

• Is there a command line (or autohotkey) way of dismounting a USB drive?

  - by justintime

  I find dismounting a USB drive takes far too many mouse clicks for my liking. Is there are command line way of doing it (XP and Vista)? Addition I have an eye condition that makes hand mouse coordination difficult so any suggestion that there aren't too many clicks will be downvoted as not answering my question. However I use AutoHotkey a lot and one use case would be to call it from an AHK script. So if there is a way to code it in AHK that will do. Added this to the tags. Further question - is it safe to remove a disk when the computer is a. on Standby or b. Hibernated. I recall that W2000 got uspet if you pulled a disk from a hibernated machine. Or is it better to explicitly dismount or sync before you hibernate or standby - prabably in a script.

  Read the article

• Creating a chain of certificates

  - by StackedCrooked

  This question is a follow up to my previous question, which was, in retrospect, not completely answered: http://superuser.com/questions/126121/how-to-create-my-own-certificate-chain. I'll represent my certificate chain like this: ROOT - A - B - C - ... I am now able to create the ROOT and A certificates, but I didn't succeed in continueing the chain. My command for creating the root certificate is: openssl req -new -newkey rsa:1024 -nodes -out ca.csr -keyout ca.key openssl x509 -trustout -signkey ca.key -days 365 -req -in ca.csr -out ca.pem Certificate A: openssl genrsa -out client.key 1024 openssl req -new -key client.key -out client.csr openssl ca -in client.csr -out client.cer This command depends on the root certificate implicitly using the data found in the openssl config file. Certificate B will only rely on A, so the previous command won't work here. How can I complete the chain?

  Read the article

• Multisession burn in Imgburn

  - by blntechie

  Is Multisession burn available in Imgburn? If not, any idea whether it will be implemented in future? I almost recommended Imgburn instead of Nero or Roxio to one of my friend. He requires multisession burning and I found no options to enable it,if available in Options. Note: Please don't question the question. Like, Why would you want multisession anyway? or Isn't USB stick/RW Disk is what you need instead of a RO CD/DVD? Please keep the answers in context. I know that I can use USB sticks instead of CD/DVD and my friend require mulisession anyway. May be I can ask him to keep Nero as a backup for this purpose if Imgburn don't support this.

  Read the article

• Hacking prevention, forensics, auditing and counter measures.

  - by tmow

  Recently (but it is also a recurrent question) we saw 3 interesting threads about hacking and security: My server's been hacked EMERGENCY. Finding how a hacked server was hacked File permissions question The last one isn't directly related, but it highlights how easy it is to mess up with a web server administration. As there are several things, that can be done, before something bad happens, I'd like to have your suggestions in terms of good practices to limit backside effects of an attack and how to react in the sad case will happen. It's not just a matter of securing the server and the code but also of auditing, logging and counter measures. Do you have any good practices list or do you prefer to rely on software or on experts that continuously analyze your web server(s) (or nothing at all)? If yes, can you share your list and your ideas/opinions?

  Read the article

• Are there any sFTP clients that support a proxy that uses NTLM authentication?

  - by Iraklis

  The title pretty much summarizes the question. We have deployed an sFTP server that needs to be accessed from our client's MS Windows Pc's that reside within a restricted local area network. The only way they can get out for their Intranet is to use an HTTP proxy that requires NTLM authentication. From what I understand all open-source sFTP clients (FilleZilla,WinSCP,etc) do NOT support NTLM authentication (Because of legal issues). I know that there are workarounds to this (installing a local proxy at the machine that understands NTLM) but this would break all sorts of security policies of our client. So my question is : Does anyone know of any sFTP client that supports a NTLM Proxy?

  Read the article

• OS X Snow Leopard, change file permissions on copy

  - by Francesco K

  I work with OS X, Snow Leopard and need to allow users to make copies of files (templates) located in a read-only repository for subsequent editing. The repository is located on a separate physical drive mounted to the OS X boot volume. As this is a shared computer in a school environment, all users access the machine via a single login ("user_local"). Whether using POSIX permissions or ACLs, the use case requires the file permissions to change from "read" to "read write" as they get copied to the "user_local" home directory. Googling around has not yielded anything that would indicate that this is possible via the Snow Leopard permission system. Question 1: Is this in fact possible via the permission system? If so, how? Question 2: If not possible, how would one go about solving this problem? I imagine this to be a fairly common use case so there must be a workable solution for it out there. Thanks.

  Read the article

• Windows Server Task Scheduler: Running scheduled executable fail-safe?

  - by Mikael Koskinen

  I have an executable which I've scheduled to run once in every five minutes (using Window's built-in Task Scheduler). It's crucial that this executable is run because it updates few time critical files. But how can I react if the virtual server running the executable goes down? At no point there shouldn't be more than 15 minutes break between the runs. As I'm using Windows Server and its Task Scheduler, I wonder is it possible to create some kind of a cluster which automatically handles the situation? The problem is that the server in question is running on Windows Azure and I don't think I can create actual clusters using the virtual machines. If the problem can be solved using a 3rd party tool, that's OK too. To generalize the question a little bit: How to make sure that an executable is run once in every 5 minutes, even if there might be server failures?

  Read the article

• How can I check whether a volume is mounted where it is supposed to be using Python?

  - by Ben Hymers

  I've got a backup script written in Python which creates the destination directory before copying the source directory to it. I've configured it to use /external-backup as the destination, which is where I mount an external hard drive. I just ran the script without the hard drive being turned on (or being mounted) and found that it was working as normal, albeit making a backup on the internal hard drive, which has nowhere near enough space to back itself up. My question is: how can I check whether the volume is mounted in the right place before writing to it? If I can detect that /external-backup isn't mounted, I can prevent writing to it. The bonus question is why was this allowed, when the OS knows that directory is supposed to live on another device, and what would happen to the data (on the internal hard drive) should I later mount that device (the external hard drive)? Clearly there can't be two copies on different devices at the same path! Thanks in advance!

  Read the article

• How can I judge the suitability of modern processors for systems with specific CPU requirements?

  - by Iszi

  Inspired by this question: How do I calculate clock speed in multi-core processors? The answers in the above question do a fair job of explaining why a lower-speed multi-core processor won't necessarily perform at the same level as a higher-speed single-core processor. Example: 4*2=8, but a quad-core 2 GHz processor isn't necessarily as fast as a single-core 8 GHz processor. However, I'm having a hard time putting the information in those answers to practical use in my mind. Particularly, I want to know how it should be used to judge whether a given CPU is appropriate for an application with specific requirements. Example scenarios: An application has a minimum CPU requirement of 2.4 GHz dual-core. Another application has a minimum CPU requirement of 1.8 GHz single-core. For either of the above scenarios: Would a higher-speed processor with fewer cores, or a lower-speed processor with more cores, be equally sufficient? If so, how can we determine the appropriate processor speeds required for a given number of cores?

  Read the article

• Blocking a country (mass iP Ranges), best practice for the actual block

  - by kwiksand

  Hi all, This question has obviously been asked many times in many different forms, but I can't find an actual answer to the specific plan I've got. We run a popular European Commercial deals site, and are getting a large amount of incoming registrations/traffic from countries who cannot even take part in the deals we offer (and many of the retailers aren't even known outside Western Europe). I've identified the problem area to block a lot of this traffic, but (as expected) there are thousands of ip ranges required. My question now (finally!). On a test server, I created a script to block each range within iptables, but the amount of time it took to add the rules was large, and then iptables was unresponsive after this (especially when attempting a iptables -L). What is the most efficient way of blocking large numbers of ip ranges: iptables? Or a plugin where I can preload them efficiantly? hosts.deny? .htaccess (nasty as I'd be running it in apache on every load balanced web server)? Cheers

  Read the article

• Reverse bash console text flow

  - by radman

  Hi, This is a bit of a weird question and I'm not sure that there is any easy answer to it but I am very interested in finding a solution. So when I work on a linux machine via a console I find that I am constantly staring at the bottom of the screen, as once you have executed a bunch of commands text fills toward the bottom. Now I find that this is decidedly not good for my neck and it would be far better if instead of scrolling to the bottom, the text would scroll to the top instead. So does anyone out there know if there is a way to reverse the direction text appears in a console? (note that i am aware of the clear command) Example: default behaviour user@machine:~$ command 1 user@machine:~$ command 2 user@machine:~$ command 3 user@machine:~$ __active_prompt__ desired behaviour user@machine:~$ __active_prompt__ user@machine:~$ command 3 user@machine:~$ command 2 user@machine:~$ command 1 Running Kubuntu 10.04 using Konsole I realise this is an odd question, thanks for any help.

  Read the article

• SharePoint 2007: Moving main site, to be a subsite - How can urls be redirected/changed?

  - by program247365

  The setup: SharePoint 2007 (MOSS Enterprise) on WINSVR03/IIS6 One site collection, with one access mapping (http://mainsite) currently I'm moving the main SharePoint site, in our one site collection, to be a subsite in a new site collection. I'm using SharePoint Content Deployment Wizard to complete this task (http://spdeploymentwizard.codeplex.com/). The Question So the main site http://mainsite being moved has many subsites, etc. I want to be sure that urls like this: http://mainsite/subsite/doclib/doc1.docx map to and redirect to the new url: http://newsite/mainsite/subsite/doclib/doc1.docx ? And furthermore: I'm aware of this - http://rdacollaboration.codeplex.com/releases/view/28073 , however is it IIS7 only? That'd wouldn't work for me. Looking at this question - http://serverfault.com/questions/107537/dealing-with-moved-documents-and-sites-in-sharepoint is the only one I see that is similar. Would an IIS redirect of http://mainsite to http://newsite/mainsite work only for the root url?

  Read the article

• Mac OS X: Trying to install prolog using fink

  - by sixtyfootersdude

  I am trying to install prolog on Mac OS X 10.4.11. I just downloaded fink because I think that that should help me and I am trying to get either: Package swi-prolog-5.8.1-2 or Package gprolog-1.3.1-1 But I am not having any luck. Here is what I was doing: % fink install swi-prolog-5.8.1-2 Information about 1723 packages read in 0 seconds. Failed: no package found for specification 'swi-prolog-5.8.1-2'! % Question 1: Are these what I want to download? Question 2: Why isn't fink working?

  Read the article

• What parameters to mdadm, to re-create md device with payload starting at 0x22000 position on backing storage?

  - by Adam Ryczkowski

  I try to recover from mdadm raid disaster, which happened when moving from ubuntu server 10.04 to 12.04. I know the correct order of devices from dmesg log, but given this information, I still cannot access the data. The superblocks look messy; the mdadm --examine for each disk is on this question on askubuntu By inspecting the raw contents of backing storage, I found the beginning of my data (the LUKS container in my case) at position 0x22000 relative to the beginning of the first partition in the raid. Question: What is the combination of options issued to "mdadm --create" to re-create mdadm that starts with the given offset? Bitmap size? PS. The relevant information from syslog when the system was healthy are pasted here.

  Read the article

• How to obtain a count of open files from server, hosting an NFS share

  - by Aaron

  Question: How to obtain a list/count of open files, by NFS clients, from NFS server on Solaris 10

  Read the article

• ldap sync with outlook

  - by Dr Casper Black

  I have a task to research the possibilities of LDAP as a centralized Address Book. I have setup a openLDAP on debian 5.07. I managed to search the LDAP contacts from MS Outlook 2007 (with some drawbacks like Outlook cant recognize street and organization fields). My question is, is it possible ,& how, to sync data on LDAP server with applications that support LDAP? I could not find any data on this topic. EDIT: The point is, to have a centralized list of contacts that can be sync with various applications, for instance Outlook, Thunderbird, Phonebook on mobile phones...etc The Question is, Is it possible to transfer (update) data on a client application from LDAP database and viceversa? So not to search LDAP server data, but to download contact that are not available in the client application (Outlook) and upload data to LDAP if the contact is in (Outlook) and not in LDAP database and the other way around, in other words synchronize.

  Read the article

• Finding how a hacked server was hacked

  - by sixtyfootersdude

  I was just browsing through the site and found this question: My server's been hacked EMERGENCY. Basically the question says: My server has been hacked. What should I do? The best answer is excellent but it raised some questions in my mind. One of the steps suggested is to: Examine the 'attacked' systems to understand how the attacks succeeded in compromising your security. Make every effort to find out where the attacks "came from", so that you understand what problems you have and need to address to make your system safe in the future. I have done no system admin work so I have no idea how I would start doing this. What would be the first step? I know that you could look in the server log files but as an attacker the first thing that I would do would be errasing the log files. How would you "understand" how the attacks succeeded?

  Read the article

• Hot-swap drive got new name, can I change it on-the-fly?

  - by T.J. Crowder

  One of the HDDs in my server's RAID config failed, so I took it out of the array and had the data center hot-swap it. They've done that, but now the new drive is /dev/sdc rather than /dev/sda. I suspect — correct me if I'm wrong — that if I reboot the server, it will be /dev/sda again, so I'm hesitant to add it back to the array as /dev/sdc because I don't want to lay a trap for myself to fall into on the next reboot. I'd just as soon not reboot the server if I don't need to (if I do need to, well, too bad for me). Is there a way I can change the device name from /dev/sdc to /dev/sda without rebooting? This is on Ubuntu 10.04 LTS. It's an md array ("Linux Software RAID"), where currently one of the devices (there are a couple of them) looks like this ("degraded" because I've removed the old /dev/sda from it): # mdadm --detail /dev/md0 /dev/md0: Version : 00.90.03 Creation Time : Sun Oct 11 21:07:54 2009 Raid Level : raid1 Array Size : 97536 (95.27 MiB 99.88 MB) Used Dev Size : 97536 (95.27 MiB 99.88 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jun 30 09:31:16 2011 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 UUID : 496be7a5:ab9177ed:7792c71e:7dc17aa4 Events : 0.112 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 0 0 1 removed Thanks, Update: Reading through the kernel md documentation, I suspect that if the name changes on reboot, it won't matter. (Good design, that.) Here's why: Boot time autodetection of RAID arrays When md is compiled into the kernel (not as module), partitions of type 0xfd are scanned and automatically assembled into RAID arrays. This autodetection may be suppressed with the kernel parameter "raid=noautodetect". As of kernel 2.6.9, only drives with a type 0 superblock can be autodetected and run at boot time. The kernel parameter "raid=partitionable" (or "raid=part") means that all auto-detected arrays are assembled as partitionable. I do have md compiled into the kernel, so I'm rebuilding the array now and will do the reboot to see what happens. Even if it works, the above doesn't answer the question I actually asked, so unless someone comes along and answers that question in the meantime (I'd be interested, even if it's not necessary for what I'm doing this very moment), I'll just delete the question to keep noise down.

  Read the article

• Connection string during installation

  - by anon2009

  Hi, I've been convinced to use windows setup files(msi) for the installation of my new windows forms application after I asked a question here and got some excellent answers (thank you all): http://serverfault.com/questions/97039/net-application-deployment Now i have a different question: My application will need to access a SQL Server to provide users with data, which means that the connection string must be stored in the client's app.config file. How should I handle this? During installation, the user enters the connection string to that database? How they get the connection string? In an email from the admin? What if the admin wants to use SQL authentication and need to put the user info at the connection string? So you know, the app will be sold via the internet, so I don't have any access to the admins or the network. Any suggestions? Thanks in advanced.

  Read the article

• How to remove the Ubuntu Gnome desktop after making the switch to KDE?

  - by codeLes

  This is the opposite of this question. Basically I've been using Ubuntu for a while but decided to give KDE a shot so I went through the process of getting the latest KDE installed. I'm very impressed with KDE and the Kwin window manager seems like a better WM than Compiz which is what I was using for Gnome (sure that's an oppinion). This was an Ubuntu Jaunty install. So how do I go about removing the Gnome desktop? Is there an automated way similar to what my previous question covered? UPDATE: Should there be any packages I should NOT remove in the process?

  Read the article

• How to get an inactive RAID device working again?

  - by Jonik

  After booting, my RAID1 device (/dev/md_d0 *) sometimes goes in some funny state and I cannot mount it. * Originally I created /dev/md0 but it has somehow changed itself into /dev/md_d0. # mount /opt mount: wrong fs type, bad option, bad superblock on /dev/md_d0, missing codepage or helper program, or other error (could this be the IDE device where you in fact use ide-scsi so that sr0 or sda or so is needed?) In some cases useful info is found in syslog - try dmesg | tail or so The RAID device appears to be inactive somehow: # cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md_d0 : inactive sda4[0](S) 241095104 blocks # mdadm --detail /dev/md_d0 mdadm: md device /dev/md_d0 does not appear to be active. Question is, how to make the device active again (using mdmadm, I presume)? (Other times it's alright (active) after boot, and I can mount it manually without problems. But it still won't mount automatically even though I have it in /etc/fstab: /dev/md_d0 /opt ext4 defaults 0 0 So a bonus question: what should I do to make the RAID device automatically mount at /opt at boot time?) This is an Ubuntu 9.10 workstation. Background info about my RAID setup in this question. Edit: My /etc/mdadm/mdadm.conf looks like this. I've never touched this file, at least by hand. # by default, scan all partitions (/proc/partitions) for MD superblocks. # alternatively, specify devices to scan, using wildcards if desired. DEVICE partitions # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # instruct the monitoring daemon where to send mail alerts MAILADDR <my mail address> # definitions of existing MD arrays # This file was auto-generated on Wed, 27 Jan 2010 17:14:36 +0200 In /proc/partitions the last entry is md_d0 at least now, after reboot, when the device happens to be active again. (I'm not sure if it would be the same when it's inactive.) Resolution: as Jimmy Hedman suggested, I took the output of mdadm --examine --scan: ARRAY /dev/md0 level=raid1 num-devices=2 UUID=de8fbd92[...] and added it in /etc/mdadm/mdadm.conf, which seems to have fixed the main problem. After changing /etc/fstab to use /dev/md0 again (instead of /dev/md_d0), the RAID device also gets automatically mounted!

  Read the article

• external pop email relay

  - by Pixman

  I want to offer to my customer this possibility : get her pop3 emails from external pop3 server forward the news emails to the new external pop3 server I have find lot of tools for sync imap accounts, or sync pop to imap, but i just want get pop and send to another email adress ! I search a answer for linux ( if i can make a simple daemon for make it's it's good ). Thanks a lot for your help. edit for more detail : For simplify my question, in my use case, it's just want to connect as client via pop protocol ( like a mail app ). And i check news emails, and forward to other email adress. I search about an app or code for create this on linux. In this situation have no access to mailbox dirs, or server configuration ( in this case i have already the answer by create a qmail hook ) Maybe, it's not the good website ? my question must be post on the stackoverflow part ?

  Read the article

< Previous Page | 237 238 239 240 241 242 243 244 245 246 247 248  | Next Page >