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• Can't Connect w/ SQL Management Studio After Domain Change

  - by Sam

  Our old Small Business Server 2003 (acting as our domain controller) was on the fritz, so we replaced it with a new Windows Server 2008 box and set the server up as our new domain controller. In hindsight, it may have been a mistake, but we set up the new server as a replacement and tried to keep as much the same as possible, including the DOMAIN name. The problem was, that even though the domain name was the same, the guest computers somehow still realized it was not the exact same domain. We had to unjoin and rejoin the domain and port over everyone's documents and settings. This morning, when I attempted to connect to my local SQL Server Instance, it was saying that my login failed. When I tried to use the SQL Management Studio, it throws the error "Package 'Microsoft SQL Management Studio Package' failed to load" on startup, then exits without giving me a chance to change the login. I am using Mixed Authentication and have an administrative account as a backup. Ideas? If there is a more appropriate stack, please let me know where to put it.

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• How to crop Screen Recordings under Snow Leopard?

  - by willc2

  Quicktime Player for Snow Leopard now allows you record the screen. Awesome! Once you have a movie it will let you trim screen recordings for length. Is there a way to crop the movie's dimensions, either in QT or using some built-in or free software? Update: How to crop to an arbitrary size and aspect ratio? iMovie only seems to let you crop to the aspect ratio of the containing project. Result: Both good answers but since I have QuickTime Player 7 and Photoshop, that's the workflow I choose as the answer. NOTE: If you have Photoshop Extended, you can import a movie, use the crop tool, and Export the cropped movie. Not free or built-in, but convenient. To summarize the instructions from the video link ricbax posted: Open movie in QuickTime Player 7 Copy a frame and Paste it into a new document in Photoshop Draw a rectangular selection around the area to keep and fill with black Invert the selection and fill with white Save as .GIF, with 2 colors Back in QuickTime Player 7, open Movie Properties window Select the Video Track Select the Visual Settings Tab Drag and Drop the 2-color .GIF file onto the Mask drop area (or use choose file button) Export the (now cropped) movie DONE

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• Turn off monitor (energy saving) while in text console mode (in Linux)

  - by Denilson Sá

  How to configure Linux text console to automatically turn of the monitor after some time? And by "text console" I mean that thing that you get on ctrl+alt+F[1-6], which is what you get whenever X11 is not running. And, no, I'm not using any framebuffer console (it's a plain, good and old 80x25 text-mode). Many years ago, I was using Slackware Linux, and it used to boot up in text-mode. Then you would manually run startx after the login. Anyway, the main login "screen" was the plain text-mode console, and I remember that the monitor used to turn off (energy saving mode, indicated by a blinking LED) after some time. Now I'm using Gentoo, and I have a similar setup. The machine boots up in text-mode, and only rarely I need to run startx. I say this because this is mostly my personal Linux server, and there is no need to keep X11 running all the time. (which means: I don't want to use GDM/KDM or any other graphical login screen) But now, in this Gentoo text-mode console, the screen goes black after a while, but the monitor does not enter any energy-saving mode (the LED is always lit). Yes, I've waited long enough to verify this. Thus, my question is: how can I configure my current system to behave like the old one? In other words, how to make the text console trigger energy-saving mode of the monitor? (maybe I should (cross-)post this question to http://unix.stackexchange.com/ )

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• Windows 7 XP Mode-Program not ending properly

  - by iceman33

  We currently have recently have implemented a few new machines to our network with Windows 7 Enterprise 64-bit installed on them. We have a program that is incompatible with Windows 7 right now and we have it installed on the Windows XP Mode that we have setup on there. There is a shortcut that is on the desktop to have it work with integration services and that part is working successfully. Occasionally, this program will stop working over the server on which it connects to has to get rebooted and the program has to get closed out. However, that process that is in the task manager doesn't seem to close out properly. So in order to correctly get the program shut down, we have to make the users log back into xp mode and do a Ctrl+Alt+Delete to kill the process or have to go back into the machine to perform a restart. I was wondering if anyone has come across a way within XP Mode yet that when the virtual machine goes into hibernation mode that it would shut down all processes or if when restarting the virtual machine your normal machine that it would shut everything down in the virtual XP mode as well and not just keep that program running? Any help would be greatly appreciated.

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• Google Chrome warning that Javascript is disabled

  - by kirchoffs415

  I hope somebody can help. I keep getting the following message when I log on: Your Javascript is disabled. Limited functionality is available. It will stay for maybe a day sometimes two. I have uninstalled javascript and reinstalled but still the same. I am using chrome. Any help would be grateful many thanks Dominic My system spec is as follows System InformationOS Name Microsoft® Windows Vista™ Home Premium Version 6.0.6002 Service Pack 2 Build 6002 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name DOM-PC System Manufacturer Dell Inc. System Model Inspiron 1545 System Type X86-based PC Processor Pentium(R) Dual-Core CPU T4200 @ 2.00GHz, 2000 Mhz, 2 Core(s), 2 Logical Processor(s) BIOS Version/Date Dell Inc. A05, 25/02/2009 SMBIOS Version 2.4 Windows Directory C:\Windows System Directory C:\Windows\system32 Boot Device \Device\HarddiskVolume3 Locale United Kingdom Hardware Abstraction Layer Version = "6.0.6002.18005" User Name DOM-PC\DOM Time Zone GMT Standard Time Installed Physical Memory (RAM) 3.00 GB Total Physical Memory 2.96 GB Available Physical Memory 1.38 GB Total Virtual Memory 5.89 GB Available Virtual Memory 4.25 GB Page File Space 3.00 GB Page File C:\pagefile.sys My System Specs

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• Central Authentication For Windows, Linux, Network Devices

  - by mojah

  I'm trying to find a way to centralize user management & authentication for a large collection of Windows & Linux Servers, including network devices (Cisco, HP, Juniper). Options include RADIUS/LDAP/TACACS/... Idea is to keep track with staff changes, and access towards these devices. Preferably a system that is compatible with both Linux, Windows & those network devices. Seems like Windows is the most stubborn of them all, for Linux & Network equipment it's easier to implement a solution (using PAM.D for instance). Should we look for an Active Directory/Domain Controller solution for Windows? Fun sidenote; we also manage client systems, that are often already in a domain. Trust-relationships between Domain Controllers isn't always an option for us (due to client security restrictions). I'd love to hear fresh ideas on how to implement such a centralized authentication "portal" for those systems.

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• Is there a way in Windows 7 to disable "journaling"?

  - by Psycogeek

  C:\$extend\$Usn.Jrnl:$J:$data Here is a picture finally. The large strip in the center of the top band is the largest chunk, in the other, grey areas are the various clusters with it. On the right, the big long grey line is $logfile (not paging), and it is 63&nbsb;MB. Paging, 500&nbsb;MB is the dark cyan chunk, next to the yellow MFTres in the inner rings.. The disk was defragged so they could be seen easier. Not all clusters of this type of file are tagged, but the idea is there. The disk is 4k clusters, now about 12 GB size. Each cute little block in the picture is .81 MB and represents 207 clusters. The dkGreen section, is mostly the whole Winsxs pile, also interesting when they keep telling us it doesn't take much disk space. Wikipedia suggests that in previous NT systems "USN journaling" would be turned on when enabled (assumes it could also be turned off?). What aspects, services, or program is working on putting that stuff all over the disk which is known by $jrnl$ type clusters, even if it is not actual USN journaling? Is it possible in a Windows 7 system to completly disable the journaling, and what would be the ramifications of that? On a Windows XP NTFS system, I do not recall seeing the quantity of disk clusters used with these $jrnl$ names, so I do not recall this being necessary in this quantity for an NTFS file system itself? I understand that it would not be there, if it did not have a useful function :-) Information about how wonderful is fine, if that information will help track down what parts of the system create and use it. Change Journals states: Change journals are also needed to recover file system indexing Hmm, that might explain some of them, or why it was left on the disk. A crash while background indexing?

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• knife on Windows inconsistently reads ~\.ssh\knife.rb on Management Workstation

  - by gWaldo

  I am implementing a new instance of (Open-source v10.12) Chef in an existing environment. Currently the environment is mostly Windows, but more Linux is being introduced. I have used Chef in a previous gig, however that was a *nix-only environment. Because this is a primarily-Windows environment, my main workstation is Windows 7 (x64), and I use Powershell as my main terminal. I created a ~\.chef directory, populated with a knife.rb and my client.pem file. When I run knife client list from ~, I get the expected results. I keep my work in Dropbox just in case my laptop should fail or be stolen. When I run knife client list from the repo directory (C:\Users\waldo\Dropbox_company\projects\chef`), I get ERROR: Your private key could not be loaded from C:/home/waldo/.chef/waldog.pem Check your configuration file and ensure that your private key is readable (Note that the path is incorrect) This is the progression as I walk up the tree towards my ~ running knife client list: C:\Users\waldo\Dropbox\_company\projects\ => Above error C:\Users\waldo\Dropbox\_company\ => Above error C:\Users\waldo\Dropbox\ => It works! (Expected results) C:\Users\waldo\ => Expected results C:\Users\waldo\Documents\ => Expected Results C:\Users\waldo\Documents\GitHub => Expected Results C:\Users\waldo\Documents\GitHub\aProject\ => Expected Results What. The. Eff! Now, I know that I can add -c path\to\knife.rb, but that's a HUGE PITA. Question is: Why is knife inconsistently reading my ~\.chef\knife.rb, and how can I get around that without incurring carpal tunnel?

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• Wireless card on HP laptop not working

  - by D. Strout

  I just bought an HP Envy m6-1125dx online from Best Buy. When I got it home and started it up, the wireless card did not work well - at all. I could connect, but any real usage would cause the connection to start dropping every 30 seconds or so, and it would be really slow. Taking another look at the reviews on the Best Buy site, it seems only a few others had this problem, so I took it to my local Best Buy and exchanged it for another unit. Got it home again and the card had the same issues. Which leads to my dilemma. First: does this model have several different cards that it could come with? Mine is a Ralink RT5390R (on both units I received). If it does, then I can keep exchanging until I get a unit with a different card. I wouldn't ask this, except it seems weird that only a few people mentioned this issue, so I thought that might be one possibility. I looked in to replacing the card with a different one myself, but it seems that HP blocks certain wireless cards. However, some people reported success in replacing the card, and this site said it was only an issue on "older HP computer[s]". Can anyone confirm this? Finally, if that fails/will not work, does anyone know what I can get through Best Buy? I am concerned that they will not put any different card than the Ralink, and after two of those, I don't want that. Can I ask Best Buy support to use a different card? Can they even get another card from HP? I guess the base question is: should I attempt to replace the card myself (two days via Amazon to get a new card), should I try to get the laptop repaired through Best Buy (two - four weeks), should I go for a different model laptop from Best Buy, or should I try a different unit of the same model (three's the charm?).

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• append $myorigin to localpart of 'from', append different domain to localpart of incomplete recipient address

  - by PJ P

  We have been having some trouble getting Postfix to behave in a very specific fashion in which sender and recipient addresses with only a localpart (i.e. no @domain) are handled differently. We have a number of applications that use mailx to send messages. We would like to know the username and hostname of the sending party. For example, if root sends an email from db001.company.local, we would like the email to be addressed from [email protected]. This is accomplished by ensuring $myorigin is set to $myhostname. We also want unqualified recipients to have a different domain appended. For example, if a message is sent to 'dbadmin' it should qualify to '[email protected]'. However, by the nature of Postfix and $myorigin, an unqualified recipient would instead qualify to [email protected]. We do not want to adjust the aliases on all servers to forward appropriately. (in fact, every possible recipient doesn't have an entry in /etc/passwd) All company employees have mailboxes on Exchange, which Postfix eventually routes to, and no local Linux/Unix mailboxes are used or access. We would love to tell our application owners to ensure they use a fully qualified email address for all recipients, but the powers that be dictate that any negligence must be accommodated. If we were to keep $myorigin equal to $myhostname, we could resolve this issue by having an entry such as the following in 'recipient_canonical_maps': @$myorigin @company.com However, unfortunately, we cannot use variables in these map files. We also want to avoid having to manually enter and maintain the actual hostname in 'recipient_canonical_maps' for each server. Perhaps once our servers are 'puppetized' we can dynamically adjust this file, but we're not there yet. After an afternoon of fiddling I've decided to reach out. Any thoughts? Thanks in advance.

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• Clarification on signals (sighup), jobs, and the controlling terminal

  - by asolberg

  So I've read two different perspectives and I'm trying to figure out which one is right. 1) Some sources online say that signals sent from the controlling terminal are ONLY sent to the foreground process group. That means if want a process to continue running in the background when you logout it is sufficient to simply suspend the job (ctrl-Z) and resume it in the background (bg). Then you can log out and it will continue to run because SIGHUP is only sent to the foreground job. See: http://blog.nelhage.com/2010/01/a-brief-introduction-to-termios-signaling-and-job-control/ ...In addition, if any signal-generating character is read by a terminal, it generates the appropriate signal to the foreground process group.... 2) Other sources claim you need to use the "nohup" command at the time the program is executed, or failing that, issue a "disown" command during execution to remove it from the jobs table that listens for SIGHUP. They say if you don't do this when you logout your process will also exit even if its running in a background process group. For example: http://docstore.mik.ua/orelly/unix3/upt/ch23_11.htm ...If I log out anyway, the shell sends my background job a HUP signal... In my own experiments with Ubuntu linux it seems like 1) is correct. I executed a command: "sleep 20 &" then logged out, logged back in and pressed did a "ps aux". Sure enough the sleep command was still running. So then why is it that so many people seem to believe number 2? And if all you have to do is place a job in the background to keep it running why do so many people use "nohup" and "disown?"

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• Can I convert an existing Firefox installation to ESR without a re-install?

  - by Iszi

  It took some jumping through hoops (including a mailing list subscription that I apparently didn't need) but I finally found where to download the Firefox ESR. This is great for fresh installs, but I was wondering if there's a way to simply convert existing installations to the ESR configuration without having to do a full install. As I understand it, the only difference between ESR and regular Firefox will be how they receive updates. After the new standard version of Firefox comes out, ESR releases will only receive critical security updates and bug fixes for the remainder of their support life. Newer versions of Firefox's standard build will have all the latest and greatest features, while ESR releases are meant to provide stability for environments that can't be expected to keep up with a new full version number change as often as Mozilla does them. In regular Firefox, the About screen shows that I am using the "release" update channel. Is switching to ESR really just a matter of switching the update channel? I presume this can be done in about:config by changing app.update.channel and probably also app.update.url. However, I don't know what these values should be for ESR or if anything else should be tweaked. So, is it possible to switch to ESR without a reinstall and, if so, how? (Note: While this question was written originally for Firefox 10, I expect any answers will apply to future ESR versions as well.)

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• IIS login / logout interferes with media player

  - by Mark Sowul

  So I'm listening to music with Windows Media Player, going insane because the music randomly stops playback every so often. I finally notice that it correlates with instances of csrss, winlogon, and logonui repeatedly starting and quitting. I finally tracked that down to IIS repeatedly logging on and off due to WebDAV requests going through my user account (my laptop syncing up with OneNote over WebDAV). I see tons of spam in my security event log for the logins. I am surprised that IIS needs to log in this much. This has only been happening for a couple of months. I'm not sure where the actual problem lies - with IIS, or Media Player, or what, so I figured I'd try and find out if the IIS login behavior is actually abnormal. Is it normal for IIS to log in this much? And is it normal for that to keep spawning winlogon, csrss, and logonui every second or so? I see a constant stream of logon events in the event log every few seconds presumably while OneNote is syncing. Logon (id = 1, source = laptop), Special Logon (id = 1, sets up privileges), Special Logon (id = 1, seems to set up the same privileges), Logon (id = 2, same laptop), Logoff (id = 2), Logoff (id = 1) The DefaultAppPool (only one apparently in use) has its idle timeout set to 20 minutes, and load user profile set to false. Not sure what other settings (if any) might be relevant.

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• ffmpeg: converting an avi to a reduced, shareable flv/mp4...

  - by meder

  I recently followed a guide and recompiled my ffmpeg so x264 is enabled. I used some generic settings to convert my 700 MB avi file to a mp4 file, the result was a 407MB mp4 file. The original avi file's settings: Codec: DX50 Resolution: 704x304 Frame rate: 23.976023 Stream 1 Codec: mpga Type: Audio Channels: 2 Sample rate: 48000 Hz Bitrate 179 kb/s Command I used: ffmpeg -i input.avi -acodec libfaac -ab 128k -ac 2 -vcodec libx264 -vpre hq -crf 22 -threads 0 output.mp4 The settings of the output file (output.mp4): Codec: avc1 Resolution: 704x304 Display resolution: 704x304 Frame rate: 11.988011 Stream 1 Codec: mp4a Type: Audio Channels: 2 Sample Rate: 48000 Hz Bits per sample: 16 Bitrate: 1536 kb/s The quality of the output mp4 is pretty nice, it seems as if it's pretty much the same as the original source. However, I'm trying to reduce the filesize and I'm not really sure whether I should go with an flv format or keep it mp4. The advantage the flv would have obviously is that it would be playable with a flash player ( I have come across some swf players which take a flash parameter to play an flv file ).. but maybe I could use the video element, as I'm only going to be displaying this video privately so I don't have to worry about supporting legacy browsers such as IE. Can someone recommend some settings to specify in order for the filesize to be around ~100-150MB or so? I don't mind a reduction in quality, nor do I mind resizing it - I was going to do it initially but I wasn't sure what the guidelines were ( if any ) for dealing with resolution.. since this video's is 704x304 would it still be ok if I forced it into one that isn't perfectly fit for the aspect ratio? I have no clue about that part. I realize that I could have probably specified 28 instead of 22 for the CRF, I'm not sure if I should do that as opposed to maybe specifying smaller resolution, which might make it smaller as well?

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• Managing disk in a VM

  - by dst

  I'm replacing my two old rack servers with a new one that has plenty of power to take over the functionality my current servers. The server is a 4U rack mount with 16 3.5" SAS drive bays, two 2.5" bays, a Xeon E3-1230v2 CPU and 32GB of ECC RAM. My issue is the following. I would like to have a FreeBSD file server with ZFS managing disks. However, I need other VMs for e.g. a shell/git server, mail server etc. I'm wondering how to deal with the following issues: I want ZFS to fully manage the disks, so I'm not using any hardware RAID. Should I pass the SAS controller directly to the FreeBSD system as passthrough PCI? I want to maximize the reliability of the setup. On what disks should I install the hypervsor and keep server system disks? For (2) I have the option of having a RAID setup on the SAS controller and using that as system disk to store the hypervisor as well as VM images. However, this makes PCI passthrough to the file server impossible. Another option is using the two 2.5" bays. In terms of reliability how are SSDs compared to e.g. WD RE4 disks? Would it make sense to have two SSDs in software RAID as boot disks for the hypervisor or should I just go with e.g. WD RE4 disks in a software RAID setup. I also need to think about where to store the mails for the mail server, but this could be done over NFS between the VMs. BTW, this is for home use, so the load is not really that big. What I'm looking for is best practices for splitting up a server.

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• Maintaining "Portability" Between Linux and Windows 7

  - by lokheart

  I am using the following ways in my office's Windows 7 machine to maintain my "portabilibity" when disaster strikes and I need to switch computer while I have no luxury of time for reinstalling all my program to the new PC. a majority of programs I used are portable, mostly from portableapp.com, like notepad+, GIMP, even R, I extract them and store them in a folder in My document, in a structure similar to the default portableapp installation when they are installed to a thumbdrive only a few software that portable version is not available and I will install them as usual all of my working files are stored in a folder in My document I regularly backup them all using syncback, because this program can keep versioning of my backup, and the backup is stored in a portable drive. One day I need to switch my computer and the operation is relative simple for me: I just move the two folders mentioned above into the my document folder of the new PC, install those few "non-portable" program in it, and this is almost done, some minor hiccups can be solved by reinstalling the portableapp into the drive. Overall speaking it is a smooth process. I would like to maintain the same degree of "portability" in my home Linux desktop (Ubuntu or Mint, I'm still deciding), that is, if my Linux crash and I need to reinstall it again. All I need to do is the move the two folder back to the new Linux, and most of my work will be almost ready to be worked on again. But I don't know how to find a Linux-alternative of portableapps. Being a newer to Linux, can anyone tell me whether this is possible in Linux?

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• DNS: how to get local server to superimpose results over authoritative server?

  - by growse

  I've got a domain for which the DNS I control, and is hosted on the internet. I also have a NAT'd internal network (192.168.0.0/24) which has internet access, and which I also control. On this internal network, I also have a DNS resolver. DNS software on both is PowerDNS. What I want to be able to do is for the DNS resolver on the internal network to be able to add/change records of queries and results that come down from the authoritative server. For example, the authoritative server might have a single record for animal.example.com: animal.example.com. IN AAAA 2001:140:283::1 However, I'd like it so that when internal clients do a dns lookup for animal.example.com, they might get back the following: animal.example.com. IN AAAA 2001:140:283::1 animal.example.com. IN A 192.168.0.2 Obviously, I could set up the internal DNS server to pretend to be authoritative for example.com, but that would require a fair bit of effort to keep the main DNS server and the internal DNS server in sync for the records which are the same between both. If the internal DNS server could somehow be made a slave of the main DNS server, but also have the provision to add its own results in, that would be ideal. Is this possible?

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• Windows 7 restarts while being idle

  - by Ondrej Slinták

  My Windows 7 almost always restarts when I keep it idle for ~20-30mins. It happened randomly before, but lately, if I leave the computer I can be sure it's gonna restart after those 30mins. It never happens when I play games or work tho, just when it's idle. It's a fresh install of Windows 7 64bit. I had also problems while installing it, it always crashed while finalizing the install and I had to reinstall again. Eventually it installed on 3rd or 4th try after I deleted all of my partitions and added them again. I thought it might have been a hardware problem, but temperatures seem to be okay and I have no idea how to track what might have been causing it. Any ideas? I'm running Windows 7 64bit on: Gigabyte EX58-UD4P Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz NVIDIA GeForce GTX 260 6GB of DDR3 1066Mhz RAM WDC WD1001FALS-00J7B0 1TB SATA II I have a very bad feeling it might be something with HDD and its compatibility with Windows 7 as I haven't had those problems for 1 year while I had Vista. Edit: I checked Event Viewer critical errors from this night. PC restarted first time at 11:12pm, then at 3:06am and since then every ~20min until I came back to it. Error message is: The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly. Source: Kernel-Power

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• it opens "open with" prompt whenever scheduled task run

  - by Shashwat Tripathi

  I am trying to run a .vbs file on every five minutes. I am trying to do this using windows task scheduler. In Actions tab - New Action, I select the file ("D:\Documents\FC3 Savegames\FC3.vbs") using open file dialog I have made all other setting properly. But whenever the task begin, It opens open with dialog every time. Once I choose Notepad to in open with dialog. Then Another dialog opens from Notepad saying Can not find D:\Documents\FC3.txt file. Do you want to create a new file with three buttons Yes, No and Cancel Help me what is wrong. I feel that white spaces in the file path causing the problem. Added later Well I just fixed this by setting path to shorthand ("D:\Documents\FC3Sav~1\FC3.vbs"). But it still opens "open with" dialog everytime. Now it has two main programs saying "Keep using Microsoft Windows Script Host" and Other Program. This dialog does not open when I run vbs file directly.

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• Sending mail through local MTA while domain MX records point to Google Apps

  - by Assaf

  My domain's email is managed by Google Apps, so that domain users get Gmail and Calendar, etc. But I also want to be able to send applicative notifications to users outside the domain via email (e.g. "some commented on your post", and so on). However, if I try to send email through code I get blocked by Gmail after a few emails. I send marketing email through MailChimp, to minimize the risk of appearing as spam to my users (one-click unsubscribe, etc.). But I can't send applicative message in this way. I want to install a local MTA (my server runs Ubuntu), but I'm not sure what anti-spam measures I need to implement so that receiving MTAs don't think it's a spam server. What's stopping anyone from setting up a mail server and sending emails using my domain name? AFAIK it's the DNS records that show the MTA's address actually belongs to the domain. But my understanding of this is rather superficial, so someone please correct me if I'm wrong. But what sort of DNS configuration do I need to put in place so that I don't get blacklisted (assuming I don't actually spam anyone)? The MX records already point to Google, and I'd like to keep it this way. So do I just need to define an A record for my internal mail server? Should it show email as coming from a sub-domain, so as not to conflict with the bare domain being managed by google? Edit: Does the following SPF record make sense if I want email from my domain name to be sent by either google's servers or any server with a dns name ending with mydomain.com? "v=spf1 ptr mx:google.com mx:googlemail.com ~all" How should I set up reverse DNS for my server? If I have an A record that points mailsender.mydomain.com to my MTA's ip address, does it mean that reverse lookup will only allow emails sent from [email protected]?

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• Network Load Balancing and AnyCast Routing

  - by user126917

  Hi All can anyone advise on problems with the following? I am planning on installing the following setup on my estate: I have 2 sites that both have a large amount of users. Goals are to keep things simple for the users and to have automatic failover above the database level. Our Database will exist at the primary site and be async mirrored to the secondary site with manual failover procedures.The database generate sequential ID's so distributing it is not an option. I plan to site IIS boxes at both sites with all of the business logic on them and heavy operations. The connections to SQL will be lightweight and DB reads will be cached on IIS. On this layer I plan to use Windows network load balancing and have the same IP or IPs across all IIS boxes at both sites. This way there will be automatic failover and no single point of failure. Also users can have one web address regardless of which site they are in automatically be network load balanced to their local IIS. This is great but obviously our two sites are on different subnets and as this will be one IP address with most of our traffic we can't go broadcasting everything across the link between the sites. To solve this problem we plan to use AnyCast routing over our network layer to route the traffic to the most local box that is listening which will be defined by the network load balancing. Has anyone used this setup before? Can anyone think of any issues with this? Also some specifics I can't find anywhere at the moment. If my Windows box is assigned an IP and listening on that IP but network load balancing is not accepting specific traffic then will AnyCast route away from that? Also can I AnyCast on a socket level?

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• Home network with two isolated separate subnets, running on cablemodem/router and WRT-router.

  - by Johan Allgoth

  I have a new connection with a nice new router/cable-modem. I'd like to setup it up optimally and needs some pointers. I am a complete n00b when it comes to routing. I want to end up with two separate subnets, 10.1.2.0/24 and 192.168.1.0/24 each available on their own wireless channel/SSID. Both firewalled. I want my wired computers on the gigabit switch, optimally with public ips. I want to be able to reach 192.168.1.0/24 from 10.1.2.0/24, but not vice versa. Everyone should have internet access. Hardware and capabilities: Netgear CG3100. Handles cable connection. Gigabit switch. 802.11n. Can do DHCP, firewall, NAT etc. Can choose subnet. Can turn of NAT and if so hand out up to 4 public ips. Somewhat challenged when it comes to configuration. WRT-router. Runs DD/Open-WRT very stable. 100 Mbit switch. 802.11.g Can do DHCP, firewall, NAT etc. Can choose subnet. Highly configurable. I hope to be able to keep 10.1.2.0/24 on the CG3100, for speed reasons and 192.168.0.0/24 on the WRT-router for quota and user control reasons. On my 10.1.2.0/24 network I plan on running servers for various services. Should I turn of NAT on the WRT-router? Or on the cable modem? Activate what in that case? Is double NAT always f-ed up?

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• Home Sharing and Remote on iTunes causing firewall nags

  - by BoltClock

  It seems that enabling Home Sharing and/or hooking up my iPhone's Remote to iTunes causes Mac OS X Snow Leopard's firewall to freak out and keep nagging every time I launch iTunes to ask if I'd like it to accept incoming connections. If I turn off Home Sharing and forget all Remotes, the nag dialog no longer comes up. I could also disable the firewall, but I think that's a silly thing to do. iTunes is already in the firewall whitelist, so the only thing I know that could cause Mac OS X to nag is a bad application bundle code signature. I checked with this Terminal command: $ codesign -vvv /Applications/iTunes.app/ And sure enough, this is what it outputs: /Applications/iTunes.app/: a sealed resource is missing or invalid /Applications/iTunes.app/Contents/Resources/English.lproj/AutofillSettings.nib/objects.xib: resource added /Applications/iTunes.app/Contents/Resources/English.lproj/iTunesDJSettings.nib/objects.xib: resource added /Applications/iTunes.app/Contents/Resources/English.lproj/MobilePhonePrefs.nib/objects.xib: resource added /Applications/iTunes.app/Contents/Resources/English.lproj/MobilePhoneSetup.nib/objects.xib: resource added /Applications/iTunes.app/Contents/Resources/English.lproj/UniversalAccess.nib/objects.xib: resource added I've tried reinstalling iTunes as suggested by this answer, but Mac OS X still nags about incoming connections and the exact same output is generated when I run the above command again. On my PC, Windows Firewall has never nagged whenever I turn on Home Sharing and hook up Remote on my iPhone. Both computers use iTunes 9.2.1. My Mac runs Mac OS X 10.6.4. Is there anything special I need to do that I might have missed? Or how do I resolve the issue? EDIT: I've updated to iTunes 10, but the nags on my Mac are still there and only go away if I turn off Home Sharing and Remote. EDIT 2: I've updated to Remote 2.0 on my iPhone, but the firewall nags are persisting. Has anyone else had this firewall issue at all?

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• apache performance timing out

  - by Mike

  Im running a webserver where I'm hosting about 6-7 websites. Most of these websites get their content from MySQL which is hosted on the same server. Traffic average per day is about 500-600 unique visitors, about 150K hits per week. But for some reason sometimes websites send a timeout, OR sometimes websites dont load all images. I know that I should perhaps separate static content from dynamic content, but for now I think that's not a possibility. I would appreciate any suggestions on how could I improve the performance of apache, so it doesn't keep timing out. Server is running on Sempron LE 1300; 2.3GHz,512K Cache 2GB RAM 10Mbps/1Mbps Services: MySQL, ProFTPD, Apache. Private + Shared = RAM used Program ---------------------------------------------------- 1.2 MiB + 54.0 KiB = 1.2 MiB proftpd 4.1 MiB + 23.0 KiB = 4.1 MiB munin-node 20.8 MiB + 120.5 KiB = 20.9 MiB mysqld 47.3 MiB + 9.9 MiB = 57.3 MiB apache2 (22) top: Mem: 2075356k total, 1826196k used, 249160k free, Timeout 35 KeepAlive On MaxKeepAliveRequests 300 KeepAliveTimeout 5 <IfModule mpm_prefork_module> StartServers 10 MinSpareServers 20 MaxSpareServers 20 MaxClients 60 MaxRequestsPerChild 1000 </IfModule> <IfModule mpm_worker_module> StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 75 ThreadsPerChild 25 MaxRequestsPerChild 0 </IfModule>

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• filter / directing URLs coming onto a network

  - by Jon

  Hi all, I an not sure if this is possible or not but what i would like to do is as follows: I have one IP address (dynamic using zoneedit.com to keep it upto date). I have one webserver running my main site which is an Ubuntu machine running Apache. I also have a windows 2008 server running another site. Just to confuse things I also run part of my Apache site on the windows server, currently using proxypassreverse to get the information from it. So it looks something like this: IP 1.2.3.4 maps to mydomain.com as well as myotherdomain.com All requests that come into port 80 are forwarded to the Apache box and I use Virtualhost settings to proxy the windows sites where needed. so mydomain.com is an Apache site mydomain.com/mywindowssection is the Apache server using proxypassreverse to get part of the site from the Windows server myotherdomain.com uses Apache and proxypassreverse to get the whole site. What I would like to be able to do is forward all http requests that come into my network to one machine that figures out who should be serving that content. so: mydomain.com would go to the Apache machine myotherdomain.com would go the windows machine. I am just in the process of setting up an Astaro gateway (never done this before so taking a while to configure) as my firewall, dns, dhcp etc, don't know if this can handle it. I have the capacity to run a VM on the network if a seperate box would be needed for this process as well. Thanks for any and all feedback. Jon

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