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• Will a database server perform better running on 2 CPUs with 16 cores or 4 CPUs with 8 cores?

  - by AlexOdin

  What I have: an online financial application (ASP.NET, C#) at peak we have 5K+ simultaneous users backend is running on Oracle 11g (active server + stand-by using Active Data Guard). At peak - 4K-5K database sessions Oracle is installed on Linux 5.8 (Oracle's unbreakable version) the database size: 7TB disk storage: NetApp (connected with 10GB network) I would like to replace old servers (IT will purchase HP blades BL685C). Servers will have 256GB of RAM. I need your help to figure out what to do with CPUs and cores. Options: 2 CPUs (2.3 GHz) with 16 cores each 4 CPUs (3.0 GHz) with 8 cores each Question: Which one should I pick? P.S. Next year, we will migrate from Oracle to SQL server. I hope, whatever option you recommend will work for both platforms

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• ffmpeg open webcam using YUYV but i want MJPEG

  - by Pavel

  I need ffmpeg to open webcam (logitech c910) in MJPEG mode, because the webcam can give ~24 using MJPEG "protocol" and only ~10 fps using the YUYV. Can i choose between them using ffmpeg command line? xx@(none) ~ $ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'YUYV' Name : YUV 4:2:2 (YUYV) Index : 1 Type : Video Capture Pixel Format: 'MJPG' (compressed) Name : MJPEG My current command line: ffmpeg -y -f alsa -i hw:3,0 -f video4linux2 -r 20 -s 1280x720 -i /dev/video0 -acodec libfaac -ab 128k -vcodec libx264 /tmp/web.avi ffmpeg produces corrupted h264 stream when i record from webcam, but normal h264 strem when i record from x11grab. Another codecs (mjpeg, mpeg4) works well with webcam... But this is another story.

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• Any way to stop VMWare workstation from dropping SSH connections?

  - by oljones

  I have VMWare workstation 8 with a few Linux guests. I have had problems maintaining an active SSH connection to my VMs when they are in bridged mode. I first read that the onboard realtek network cards were not well supported so I bought a Intel Pro/1000 GT card. This supposedly had support. But this made no difference. Connections via SSH are active for about the first 3 minutes then hang and die. I have changed the TCP Checksum offload on the Intel and Realtek NICs, but this only works some of the time and even then not for very long. The best I could do was about 20 minutes before the connection was dropped. Any ideas?

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• Need help setting up mail DNS records

  - by Dave

  Hi, We are hosting our web site on host monster, but want our email to continue to be hosted at the old site. Our domain points to the hostmonster DNS servers, but I can't figure out the right configuration for the remote email servers. We have one MX entry, which is priority: 0 domain: ourdomain.com And then we have these DNS entries ... name: mail.ourdomain.com ttl: 14400 class: IN type: A record: old.host.ip.address name: mail1.ourdomain.com ttl: 14400 class: IN type: A record: old.host.secondip.address Can someone tell me what I need to add/edit to get mail to correctly route to our old host? Thanks, - Dave

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• Sync iPhone applications in iTunes

  - by Uwe Honekamp

  Suppose I have one the one hand one iTunes library on a PC used to sync Outlook contacts and calendar plus on the other hand one iTunes library on a Mac that syncs music, podcasts, apps, ringtones, etc. Both libraries are based on iTunes 9.0.2. It turns out that the iTunes library on the PC always tries to sync apps and ringtones as well. Unfortunately, this boils down to deleting apps and ringtones from the iPhone because the apps are not part of the iTunes library on the PC. After unchecking the checkbox to sync apps and ringtones and plugging the iPhone into the Mac the checkbox is also unchecked on the Mac. It seems as if the settings for syncing apps and ringtones are stored on the iPhone rather than in the particular iTunes library. Whenever syncing apps and ringtones is active on one machine it is also active on the other and vice versa. How can I make the PC ignore apps and ringtones and only sync contacts and calendar?

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• Can I configure a DNS cache not to forward AAAA queries?

  - by itsadok

  I'm setting up an internal DNS cache because my firewall is having trouble handling all the sessions created by DNS requests. I tried using bind9, dnsmasq and DJB dnscache, they all help reduce the number of requests leaving my network, but there are still a lot of request being made. Looking at the log files, and tcpdump and dnstop outputs, it seems that requests that return SERVFAIL do not get cached at all. And a lot of those failed requests are AAAA requests, which is a shame, because I do not have ipv6 enabled on any server. I've looked at several ways to help the situation, and I think if I could somehow prevent AAAA record requests from being forwarded by the DNS cache, it would reduce the number of requests significantly. The closest thing I found was the filter-aaaa-on-v4 option in BIND9. However, this only removes the record from the server response, and does not prevent it from forwarding it. Any help would be appreciated.

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• Internet wireless connected with limited access, windows vista

  - by r0ca

  I had some malware in my computer so I did a bit of manual work to remove it including resetting TCP/IP. Now the malware is gone. I can see my home wireless network and I can get connected to it but when connected I get the Internet wireless connected with limited access message. When I go to the IE I cannot browse. When I tried to ping 192.168.1.1 I got an Error Code 1231 Unconnected Network Problem. I have deactivated my Windows firewall as I thought it could be hyperactive security. Still no luck. I have Norton but it is not active, I have also Avast and AVG installed but they are not active. Any ideas?

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• Is it possible to interrupt or cancel the trash-delete process?

  - by pete

  I am connected to the company server, onsite not remote, which is Windows based. When, in the OS finder, I go to delete a file or directory that resides on the window-based server, the trash progress panel appears as usual. Not infrequently it will just hang there appearing to be active but no progress occurs on the progress bar. So the X is chosen to stop or cancel the process. A new panel appears, and while appearing to be active, again, just hangs there indefinitely. My lack of reputation prevents posting a screen shot - sorry. The question then is this: Is there a way via the Activity Monitor, Terminal, etc. to interrupt this deleting process in the Mac OS? Currently, I have to force shutdown and reboot to eradicate the ever-deleting panel. Finder relaunch does not solve and only eliminates the finder until I force reboot. Any assistance is appreciated. Thanks, Pete iMac, Mac OS X (10.6.8), i7-2.8ghz, 8gb ram

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• Winxp system context menus blank after last security update

  - by Peter Rowell

  Because of a CERT advisory of several out-of-band security updates released by MS I did a Critical Updates pass on my WinXP Pro SP3 machine. I now have the situation where it seems that all of my WinXP-generated menus come up with all items black. If I wave the cursor over the menu, the items will update as they become active (go blue) and then update correctly (to black-text-on-white-background) as they go non-active. Separators (which never get a hover event) stay black. App-level context menus seem to work fine (Firefox, OpenOffice, etc.) with the exception of Windows Explorer and Internet Explorer, which both exhibit this behavior on both their context menus and on their menu bar drop down menus. I'm assuming that's true because they are all using the same library code. Thoughts? Fixes? Help!

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• Bonding: works only from one link

  - by Crazy_Bash

  I would like to install bonding with 4 links. but only one of them is active. eth4 is always active. the others simply don't work. those are my configs: DEVICE="eth2" BOOTPROTO="none" MASTER=bond0 SLAVE=yes USERCTL=no NM_CONTROLLED="no" ONBOOT="yes" DEVICE="eth3" BOOTPROTO="none" MASTER=bond0 SLAVE=yes USERCTL=no NM_CONTROLLED="no" ONBOOT="yes" DEVICE="eth4" BOOTPROTO="none" MASTER=bond0 SLAVE=yes USERCTL=no NM_CONTROLLED="no" ONBOOT="yes" DEVICE="eth5" BOOTPROTO="none" MASTER=bond0 SLAVE=yes USERCTL=no NM_CONTROLLED="no" ONBOOT="yes" DEVICE=bond0 IPADDR=<ip> BROADCAST=<ip> NETWORK=<ip> GATEWAY=<ip> NETMASK=<ip> USERCTL=no BOOTPROTO=none ONBOOT=yes NM_CONTROLLED=no /etc/modprobe.d/bonding.conf alias bond0 bonding options bond0 mode=4 miimon=100 updelay=200 #downdelay=200 xmit_hash_policy=layer3+4 lacp_rate=1 Linux: Linux 3.0.0+ #1 SMP Fri Oct 26 07:55:47 EEST 2012 x86_64 x86_64 x86_64 GNU/Linux what i've tried: downdelay=200 xmit_hash_policy=layer3+4 lacp_rate=1

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• What are "Missing thread recordng" erros when running fsck -fy?

  - by ohho

  There is some error reported when I run Disk Utility and verify the root volume on my OS X MacBook. So I boot and CMD-S into the shell mode and run /sbin/fsck -fy. Errors are like: ** Checking catalog file. Missing thread record (id = ...) In correct number of thread records ** Checking catalog hierarchy. Invalid volume file count (It should be ... instead of ...) ** Repairing Volume Missing directory record (id = ...) I'd like to know what is the cause of the above errors? Hopefully I will be more careful in the future to prevent them from happening again. p.s. I am using a SSD and so I assume mechanical hard disk error is less likely. Thanks!

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• Can't reconnect to my RDP session

  - by Jeremy Stein

  I use a VM through RDP. When I'm done for the day, I just disconnect the session and reconnect in the morning. That allows me to pick up what I was doing and not close all the applications. As I'm the only user, this generally works well. Today, I can't reconnect to my session from yesterday. When I RDP, I get a new session. When I run query user, I can see my other session: USERNAME SESSIONNAME ID STATE IDLE TIME LOGON TIME me rdp-tcp#82 1 Active 15:00 4/22/2010 9:00 AM me rdp-tcp#91 2 Active . 4/30/2010 9:00 AM If I try to use Terminal Services Manager to remote control the other session, I get this error: Session (ID 1) remote control failed (Error 7044 - The request to control another session remotely was denied. ) Is there any way to reconnect to this session, or do I need to just kill it?

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• Windows SBS 2008 to Windows Server 2012 migration

  - by StefanGrech

  I am in the process of upgrading my Windows SBS 2008 server running Exchange, Active Directory and as a File server to Windows Server 2012 essentials. Now I know that Windows Server 2012 essentials does not have exchange, thus I was looking to migrate the Active directory and the file server to Windows Server 2012 essentials, Then I would have a separate Virtual machine running Windows server 2012 standard with Exchange 2013. Now my question is, what should I do first? Migrate the AD and File server to Windows 2012 essentials and then after the migration is finished, I create a local move of the mailboxes from SBS 2008 to Windows Server 2012 standard running exchange 2013? or should this be the other way round?

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• Windows will not go into standby

  - by Robert

  When I select Start-Turn off computer-Standby the 'turn off computer' option window closes, and then nothing else happens. I can start new applications, and Windows acts like I never selected standby. If I have a TV program scheduled to record I get a window asking if I'm sure, there are programs scheduled to record - and the computer just keeps running after I select yes. (If a program is not scheduled then that task in not running/in memory - this problem happens even if I'm not watching TV and no TV scheduling task is running.) This problem happens regardless of whether Media Center is running. Windows XP SP3 Media Center Edition, all current updates installed.

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• Site-to-Site PPTP VPN connection between two Windows Server 2008 R2 servers

  - by steve_eyre

  We have two Windows Server 2008 R2 machines, one in our main office and one in a new office which we have just moved offsite. The main office has previously been handling client-to-server PPTP VPN connections. Now that we have moved our second server out of office, we want to set up a demand-dial or persistent VPN connection from the second server to the primary. Using a custom setting RRAS profile, we have successfully managed to set up a site-to-site VPN connection so that from the second server itself, it can access any of the devices in the main office and communicate back. However, any connected machines in the second office cannot use this connection, even when using the second server as gateway. The demand-dial interface is setup from the Second Server dialing into Main Server and a static route set up on RRAS for 192.168.0.0 with subnet mask 255.255.0.0 pointing down this network interface. The main office has the network of 192.168.0.0/16 (subnet mask 255.255.0.0). The second office has the network of 172.16.100.0/24 (subnet mask 255.255.255.0). What steps do we need to take to ensure traffic from the second office PCs going towards 192.168.x.x addresses use the VPN route? Many Thanks in advance for any help the community can offer. Debug Information Here is the route print output from the second server: =========================================================================== Interface List 23...........................Main Office 22...........................RAS (Dial In) Interface 16...e0 db 55 12 fa 02 ......Local Area Connection - Virtual Network 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 24...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.16.100.250 172.16.100.222 261 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 <MAIN OFFICE IP> 255.255.255.255 172.16.100.250 172.16.100.222 6 172.16.100.0 255.255.255.0 On-link 172.16.100.222 261 172.16.100.113 255.255.255.255 On-link 172.16.100.113 306 172.16.100.222 255.255.255.255 On-link 172.16.100.222 261 172.16.100.223 255.255.255.255 On-link 172.16.100.222 261 172.16.100.224 255.255.255.255 On-link 172.16.100.222 261 172.16.100.225 255.255.255.255 On-link 172.16.100.222 261 172.16.100.226 255.255.255.255 On-link 172.16.100.222 261 172.16.100.227 255.255.255.255 On-link 172.16.100.222 261 172.16.100.228 255.255.255.255 On-link 172.16.100.222 261 172.16.100.229 255.255.255.255 On-link 172.16.100.222 261 172.16.100.230 255.255.255.255 On-link 172.16.100.222 261 172.16.100.255 255.255.255.255 On-link 172.16.100.222 261 192.168.0.0 255.255.0.0 192.168.101.87 192.168.101.17 266 192.168.101.17 255.255.255.255 On-link 192.168.101.17 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.16.100.222 261 224.0.0.0 240.0.0.0 On-link 172.16.100.113 306 224.0.0.0 240.0.0.0 On-link 192.168.101.17 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 172.16.100.222 261 255.255.255.255 255.255.255.255 On-link 172.16.100.113 306 255.255.255.255 255.255.255.255 On-link 192.168.101.17 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.0.200 Default 0.0.0.0 0.0.0.0 172.16.100.250 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 16 261 fe80::/64 On-link 16 261 fe80::edf4:85c6:3c15:dcbe/128 On-link 1 306 ff00::/8 On-link 16 261 ff00::/8 On-link 22 306 ff00::/8 On-link =========================================================================== Persistent Routes: None And here is the route print from one of the second office PCs: =========================================================================== Interface List 11...10 78 d2 32 53 27 ......Atheros AR8151 PCI-E Gigabit Ethernet Controller 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 13...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.16.100.250 172.16.100.103 10 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 172.16.100.0 255.255.255.0 On-link 172.16.100.103 266 172.16.100.103 255.255.255.255 On-link 172.16.100.103 266 172.16.100.255 255.255.255.255 On-link 172.16.100.103 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.16.100.103 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 172.16.100.103 266 =========================================================================== Persistent Routes: None IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 11 266 fe80::/64 On-link 11 266 fe80::e973:de17:a045:aa78/128 On-link 1 306 ff00::/8 On-link 11 266 ff00::/8 On-link =========================================================================== Persistent Routes: None

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• Dovecot, Postfix, Postfixadmin - can't send/receive mail

  - by Jack

  I am setting up a mail server: Dovecot and Postfix with MySQL support and Postfixadmin. Spend literally all day trying to figure it out, but I'm still unable to neither send nor receive any emails. To my knowledge, I have configured everything correctly, so either there is another problem, or my knowledge isn't good enough. Here is what I get when I use "echo test | mail [email protected]:" Jul 11 00:41:07 server postfix/pickup[17999]: 5B0D32AE1B: uid=0 from= Jul 11 00:41:07 server postfix/cleanup[19444]: 5B0D32AE1B: message-id=<[email protected] Jul 11 00:41:07 server postfix/qmgr[18513]: 5B0D32AE1B: from=, size=329, nrcpt=1 (queue active) Jul 11 00:41:12 server postfix/smtp[19448]: 5B0D32AE1B: to=, relay=none, delay=5.3, delays=0.1/0.01/5.2/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=dsa.com type=MX: Host not found, try again) *@mail.asd.com is changed for privacy reasons, same goes for [email protected]. *The bold text is where it, for some reason, prints out dsa.com - even though I haven't found it anywhere in the files which I've edited during the installation, nor my DNS is .com in the first place. Here is what I get when I try to send out an email from Postfix Admin interface: Jul 11 00:49:08 server postfix/smtpd[19479]: connect from localhost[127.0.0.1] Jul 11 00:49:08 server postfix/trivial-rewrite[19484]: warning: do not list domain asd.com in BOTH mydestination and virtual_mailbox_domains Jul 11 00:49:08 server postfix/smtpd[19479]: 4F7892AE1E: client=localhost[127.0.0.1] Jul 11 00:49:08 server postfix/cleanup[19487]: 4F7892AE1E: message-id=<[email protected] Jul 11 00:49:08 server postfix/qmgr[18513]: 4F7892AE1E: from=, size=317, nrcpt=1 (queue active) Jul 11 00:49:08 server postfix/smtpd[19479]: disconnect from localhost[127.0.0.1] Jul 11 00:49:10 server postfix/smtpd[19492]: connect from localhost[127.0.0.1] Jul 11 00:49:10 server postfix/trivial-rewrite[19484]: warning: do not list domain asd.com in BOTH mydestination and virtual_mailbox_domains Jul 11 00:49:10 server postfix/smtpd[19492]: 743AE2AE1F: client=localhost[127.0.0.1] Jul 11 00:49:10 server postfix/cleanup[19487]: 743AE2AE1F: message-id=<[email protected] Jul 11 00:49:10 server postfix/qmgr[18513]: 743AE2AE1F: from=, size=772, nrcpt=1 (queue active) Jul 11 00:49:10 server postfix/smtpd[19492]: disconnect from localhost[127.0.0.1] Jul 11 00:49:10 server amavis[13437]: (13437-11) Passed CLEAN, LOCAL [127.0.0.1] - , Message-ID: <[email protected], mail_id: 86+KQY93ANel, Hits: -0.002, size: 317, queued_as: 743AE2AE1F, 2145 ms Jul 11 00:49:10 server postfix/smtp[19489]: 4F7892AE1E: to=, relay=127.0.0.1[127.0.0.1]:10024, delay=2.3, delays=0.17/0.01/0/2.1, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 743AE2AE1F) Jul 11 00:49:10 server postfix/qmgr[18513]: 4F7892AE1E: removed I really don't know what might be the problem... If you need to know something, feel free to ask and I'll clarify something.

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• best storage option for recording live streaming video

  - by Alchemical

  We're creating a new web site that includes video chat capabilities. Wowza Server is being used for the streaming media. We would like the capability for users to record their video chats in certain circumstances. Is it feasible to record the videos to the same server running Wowza? Or performance-wise, would it make more sense to store them on another server? I understand SANs are popular as well, but I'm a little concerned about cost for those as we are on a fairly tight budget. Currently we have two servers with pretty decent RAID cnofigurations for storage, one has 14TB and the other 6TB. Mostly concerned if doing the recording on the same server as the streaming server (or web server), could significantly adversely affect that server's primary function.

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• Weird routing issue (updated)

  - by smccloud

  I just updated the route tables due to a mistake on my part. I am working on getting networking working correctly on a cluster of 14 virtual servers at a customer site. 11 of them work fine for routing and 3 don't work correctly for their administrative network (172.28.56.0). All are running Windows Web Server 2008R2. Default gateway is set on the production network (172.28.58.0) and not on the administrative network (handled with persistent static routes). On a working server, route print gives me the following (MACs redacted) =========================================================================== Interface List 11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection 13...XX XX XX XX XX XX00 0c 29 85 b2 98 ......Intel(R) PRO/1000 MT Network Connection #2 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 15...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.11 266 10.18.1.22 255.255.255.255 172.28.58.1 172.28.58.11 11 10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.56.0 255.255.255.0 On-link 172.28.56.201 266 172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.56.201 255.255.255.255 On-link 172.28.56.201 266 172.28.56.255 255.255.255.255 On-link 172.28.56.201 266 172.28.58.0 255.255.255.224 On-link 172.28.58.11 266 172.28.58.0 255.255.255.224 172.28.58.1 172.28.58.11 11 172.28.58.1 255.255.255.255 172.28.58.1 172.28.58.11 11 172.28.58.11 255.255.255.255 On-link 172.28.58.11 266 172.28.58.31 255.255.255.255 On-link 172.28.58.11 266 172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.201 11 172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.201 11 192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.201 11 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.28.56.201 266 224.0.0.0 240.0.0.0 On-link 172.28.58.11 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 172.28.56.201 266 255.255.255.255 255.255.255.255 On-link 172.28.58.11 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 172.28.56.0 255.255.255.0 172.28.56.1 1 172.28.63.0 255.255.255.0 172.28.56.1 1 192.168.0.0 255.255.0.0 172.28.56.1 1 172.28.60.0 255.255.255.0 172.28.56.1 1 10.32.0.0 255.255.0.0 172.28.56.1 1 172.28.34.0 255.255.255.0 172.28.56.1 1 172.28.42.0 255.255.255.0 172.28.56.1 1 0.0.0.0 0.0.0.0 172.28.58.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link =========================================================================== Persistent Routes: None On one of the non-working server, route print gives me the following (MACs redacted) =========================================================================== Interface List 11...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection 13...XX XX XX XX XX XX ......Intel(R) PRO/1000 MT Network Connection #2 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 14...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.28.58.1 172.28.58.21 266 10.32.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 172.28.34.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.42.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.56.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.56.211 255.255.255.255 On-link 172.28.56.211 266 172.28.58.0 255.255.255.0 172.28.58.1 172.28.58.21 11 172.28.58.0 255.255.255.224 On-link 172.28.58.21 266 172.28.58.21 255.255.255.255 On-link 172.28.58.21 266 172.28.58.31 255.255.255.255 On-link 172.28.58.21 266 172.28.60.0 255.255.255.0 172.28.56.1 172.28.56.211 11 172.28.63.0 255.255.255.0 172.28.56.1 172.28.56.211 11 192.168.0.0 255.255.0.0 172.28.56.1 172.28.56.211 11 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 172.28.56.211 266 224.0.0.0 240.0.0.0 On-link 172.28.58.21 266 255.255.255.255 255.255.255.255 On-link 127.0.0.1 06 255.255.255.255 255.255.255.255 On-link 172.28.56.211 266 255.255.255.255 255.255.255.255 On-link 172.28.58.21 266 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 172.28.56.0 255.255.255.0 172.28.56.1 1 172.28.60.0 255.255.255.0 172.28.56.1 1 172.28.63.0 255.255.255.0 172.28.56.1 1 172.28.34.0 255.255.255.0 172.28.56.1 1 172.28.42.0 255.255.255.0 172.28.56.1 1 192.168.0.0 255.255.0.0 172.28.56.1 1 10.32.0.0 255.255.0.0 172.28.56.1 1 0.0.0.0 0.0.0.0 172.28.58.1 Default 172.28.58.0 255.255.255.0 172.28.58.1 1 =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 1 306 ff00::/8 On-link =========================================================================== Persistent Routes: None I am at a complete loss why the non-working servers have no On-link route for 172.28.56.0. Does anyone have any suggestions on what I should be looking at to figure this out? Also, I do have "physical" access to the console if needed through vSphere Client.

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• Connection drops while transferring large files to one server on a network

  - by Charlotte

  My company has two sites, each with their own LAN, using site to site VPN tunnel to connect the two sites. When transferring files (especially larger files) from site1 to site2 server1, the file transfer fails. I don't think this can be a VPN issue because transferring the same files to site2 server2 which is on the same network as server1 works fine. Pings to server1 and server2 at site2 from site1 are about the same, mostly 19/20ms with the odd one up to 50ms. As server1 is DB server with a high load I thought the NIC maybe overloaded, but a transfer from site2 server1 to site2 server2 works fine, and that uses the same NIC on server1 as transfers from site1 to site2 server1. The servers are both Windows Server 2003 VMs with VMXNET 3 NICs. Site2 Server1 route print: IPv4 Route Table =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x10003 ...00 50 56 99 28 9b ...... vmxnet3 Ethernet Adapter #2 0x10004 ...00 50 56 99 18 97 ...... vmxnet3 Ethernet Adapter =========================================================================== =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.20.10.1 172.20.10.18 10 10.10.10.0 255.255.255.0 10.10.10.70 10.10.10.70 10 10.10.10.70 255.255.255.255 127.0.0.1 127.0.0.1 10 10.255.255.255 255.255.255.255 10.10.10.70 10.10.10.70 10 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 172.20.10.0 255.255.255.0 172.20.10.18 172.20.10.18 10 172.20.10.18 255.255.255.255 127.0.0.1 127.0.0.1 10 172.20.255.255 255.255.255.255 172.20.10.18 172.20.10.18 10 224.0.0.0 240.0.0.0 10.10.10.70 10.10.10.70 10 224.0.0.0 240.0.0.0 172.20.10.18 172.20.10.18 10 255.255.255.255 255.255.255.255 10.10.10.70 10.10.10.70 1 255.255.255.255 255.255.255.255 172.20.10.18 172.20.10.18 1 Default Gateway: 172.20.10.1 =========================================================================== Persistent Routes: None Site2 Server2 route print IPv4 Route Table =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x10003 ...00 50 56 99 15 00 ...... vmxnet3 Ethernet Adapter =========================================================================== =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 172.20.10.1 172.20.10.114 10 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 172.20.10.0 255.255.255.0 172.20.10.114 172.20.10.114 10 172.20.10.114 255.255.255.255 127.0.0.1 127.0.0.1 10 172.20.255.255 255.255.255.255 172.20.10.114 172.20.10.114 10 224.0.0.0 240.0.0.0 172.20.10.114 172.20.10.114 10 255.255.255.255 255.255.255.255 172.20.10.114 172.20.10.114 1 Default Gateway: 172.20.10.1 =========================================================================== Persistent Routes: None Site1 Server route print: =========================================================================== Interface List 14...00 50 56 93 00 0b ......vmxnet3 Ethernet Adapter #2 1...........................Software Loopback Interface 1 12...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 13...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.168.1 192.168.168.118 261 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.168.0 255.255.255.0 On-link 192.168.168.118 261 192.168.168.118 255.255.255.255 On-link 192.168.168.118 261 192.168.168.255 255.255.255.255 On-link 192.168.168.118 261 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.168.118 261 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.168.118 261 =========================================================================== Persistent Routes: Network Address Netmask Gateway Address Metric 0.0.0.0 0.0.0.0 192.168.168.1 Default =========================================================================== IPv6 Route Table =========================================================================== Active Routes: If Metric Network Destination Gateway 1 306 ::1/128 On-link 14 261 fe80::/64 On-link 14 261 fe80::3c6b:996f:ef36:ee76/128 On-link 1 306 ff00::/8 On-link 14 261 ff00::/8 On-link =========================================================================== Persistent Routes: None tracert from site1 to site2 server1: Tracing route to server1 [172.20.10.18] over a maximum of 30 hops: 1 19 ms 19 ms 19 ms server1 [172.20.10.18] Trace complete. tracert from site2 server1 to site1: When this was run it went to the external IP of site2, then to a couple of external ips of the isp, then times out. Can anyone suggest any troubleshooting steps? Thanks, Charlotte.

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• How to run node.js app on port 80? Are processes blocking my port?

  - by Lucas

  I believe the port 80 on my remote instance is blocked, and I am trying to run a node.js app using port 80. I have experimented with ports 3000 and 3002, and both ports are working fine, but I get an error when running on port 80. I suspect port 80 is blocked from my output of netstat -an below, but how can I find the process id's of the addresses that are blocking port 80 below? [lucas@ecoinstance]~/node/nodetest1$ netstat -an Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:3002 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:27017 127.0.0.1:51108 ESTABLISHED tcp 0 0 127.0.0.1:51106 127.0.0.1:27017 ESTABLISHED tcp 0 0 127.0.0.1:27017 127.0.0.1:51106 ESTABLISHED tcp 0 0 127.0.0.1:51107 127.0.0.1:27017 ESTABLISHED tcp 0 0 10.240.241.116:3002 174.61.171.61:36583 TIME_WAIT tcp 0 0 127.0.0.1:27017 127.0.0.1:51109 ESTABLISHED tcp 0 0 10.240.241.116:42423 169.254.169.254:80 ESTABLISHED tcp 0 0 127.0.0.1:51108 127.0.0.1:27017 ESTABLISHED tcp 0 532 10.240.241.116:22 174.61.171.61:56824 ESTABLISHED tcp 0 0 127.0.0.1:27017 127.0.0.1:51107 ESTABLISHED tcp 0 0 10.240.241.116:42412 169.254.169.254:80 ESTABLISHED tcp 0 0 127.0.0.1:51109 127.0.0.1:27017 ESTABLISHED tcp 0 0 127.0.0.1:51105 127.0.0.1:27017 ESTABLISHED tcp 0 0 10.240.241.116:42422 169.254.169.254:80 TIME_WAIT tcp 0 0 127.0.0.1:27017 127.0.0.1:51105 ESTABLISHED tcp6 0 0 :::22 :::* LISTEN udp 0 0 0.0.0.0:49948 0.0.0.0:* udp 0 0 0.0.0.0:68 0.0.0.0:* udp 0 0 10.240.241.116:123 0.0.0.0:* udp 0 0 127.0.0.1:123 0.0.0.0:* udp 0 0 0.0.0.0:123 0.0.0.0:* udp6 0 0 :::12151 :::* udp6 0 0 :::123 :::* Active UNIX domain sockets (servers and established) Proto RefCnt Flags Type State I-Node Path unix 2 [ ACC ] STREAM LISTENING 405680 /tmp/ssh-KdkxJfFLpKTC/agent.22 813 unix 2 [ ACC ] STREAM LISTENING 408230 /tmp/ssh-ofUeNNEwAqtP/agent.22 243 unix 2 [ ACC ] STREAM LISTENING 416227 /tmp/mongodb-27017.sock unix 2 [ ACC ] SEQPACKET LISTENING 3692 /run/udev/control unix 7 [ ] DGRAM 5286 /dev/log unix 2 [ ACC ] STREAM LISTENING 5318 /var/run/acpid.socket unix 2 [ ACC ] STREAM LISTENING 16170 /tmp//tmux-1000/default unix 2 [ ACC ] STREAM LISTENING 414450 /var/run/dbus/system_bus_socke And here is the log when trying to run on port 80 with node.js: [lucas@ecoinstance]~/node/nodetest1$ npm start > [email protected] start /home/lucas/node/nodetest1 > node ./bin/www events.js:72 throw er; // Unhandled 'error' event ^ Error: listen EACCES at errnoException (net.js:904:11) at Server._listen2 (net.js:1023:19) at listen (net.js:1064:10) at Server.listen (net.js:1138:5) at Function.app.listen (/home/lucas/node/nodetest1/node_modules/express/lib/applicati on.js:532:24) at Object.<anonymous> (/home/lucas/node/nodetest1/bin/www:7:18) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) npm ERR! [email protected] start: `node ./bin/www` npm ERR! Exit status 8 npm ERR! npm ERR! Failed at the [email protected] start script. npm ERR! This is most likely a problem with the nodetest1 package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node ./bin/www npm ERR! You can get their info via: npm ERR! npm owner ls nodetest1 npm ERR! There is likely additional logging output above. npm ERR! System Linux 3.13-0.bpo.1-amd64 npm ERR! command "/usr/local/bin/node" "/usr/local/bin/npm" "start" npm ERR! cwd /home/lucas/node/nodetest1 npm ERR! node -v v0.10.28 npm ERR! npm -v 1.4.9 npm ERR! code ELIFECYCLE npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/lucas/node/nodetest1/npm-debug.log npm ERR! not ok code 0 And sudo netstat -lnp does not return any matching port 80's: [lucas@ecoinstance]~/node/nodetest1$ sudo netstat -lnp [48/648] Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Progr am name tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 29160/mon god tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1976/sshd tcp6 0 0 :::22 :::* LISTEN 1976/sshd udp 0 0 0.0.0.0:49948 0.0.0.0:* 1604/dhcl ient udp 0 0 0.0.0.0:68 0.0.0.0:* 1604/dhcl ient udp 0 0 10.240.241.116:123 0.0.0.0:* 2076/ntpd udp 0 0 127.0.0.1:123 0.0.0.0:* 2076/ntpd udp 0 0 0.0.0.0:123 0.0.0.0:* 2076/ntpd udp6 0 0 :::12151 :::* 1604/dhcl ient udp6 0 0 :::123 :::* 2076/ntpd Active UNIX domain sockets (only servers) Proto RefCnt Flags Type State I-Node PID/Program name Path unix 2 [ ACC ] STREAM LISTENING 405680 22814/ssh-agent /tmp/ssh-K dkxJfFLpKTC/agent.22813 unix 2 [ ACC ] STREAM LISTENING 408230 24049/ssh-agent /tmp/ssh-o fUeNNEwAqtP/agent.22243 unix 2 [ ACC ] STREAM LISTENING 416227 29160/mongod /tmp/mongo db-27017.sock unix 2 [ ACC ] SEQPACKET LISTENING 3692 284/udevd /run/udev/ control unix 2 [ ACC ] STREAM LISTENING 5318 1798/acpid /var/run/a cpid.socket unix 2 [ ACC ] STREAM LISTENING 16170 5177/tmux /tmp//tmux -1000/default unix 2 [ ACC ] STREAM LISTENING 414450 28213/dbus-daemon /var/run/d bus/system_bus_socket unix 2 [ ACC ] STREAM LISTENING 404225 22324/1 /tmp/ssh-9 TlDmu4bjl/agent.22324

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• Entering data into AD LDS

  - by Robert Koritnik

  I need some help configuring AD LDS (Active Directory Lightweight Directory Services). I'm not an administrator, have never configured domains and I don't have a clue how to add new users to existing domains. The thing is I need to develop an app that must be connected to AD. I've chosen AD LDS because I can install it on Windows 7 and it acts as an active directory even though there's no dmain controller present in the network. What I've done so far: I've installed AD LDS I've added a new instance with appication directory partition name DN=Air,DC=Watanabe,DC=pri I can connect to it using ADSI Edit and see all kinds of strange But now I don't know what to do? When it opens I can see the window below, but where's next? Can anybody give me some guidelines, how can I add domain users, so I can use them in my app AD required app?

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• Ubuntu, apache2 wildcard dns to subdomain

  - by Mark van Velthoven

  Currently I'm hosting my own (ubuntu) server with the following services: samba, ftp and a webserver. I've bought a domain and linked the DNS A-record to my ISP's IP. This is working correctly. Now I'd like to use the DNS wildcard-record to create subdomains. I want to avoid waiting 24hrs before the DNS change completes. Thusfar I'm only able to redirect all incoming wildcards to the same directory: test1.domain.com redirects to /var/www test2.domain.com redirects to /var/www Although I'd like to get: test1.domain.com redirects to /var/www/test1 test2.domain.com redirects to /var/www/test2 My guess would be to change the file /etc/apache2/sites-available/domain. Any help or tips would be welcome! Thanks, Mark

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• How to take a screenshot on Windows 7 and auto create screenshot file on desktop like Mac?

  - by Ali

  I'm trying to find information how do we take a screenshot on Windows 7 that will actually create a screenshot file like .png in to your desktop like on mac where you can do it by press Command+Control+Shift+4. In windows all I know is that I can do it by press press = Windows captures the entire screen and copies it to the clipboard. or for the Active windows I can just do hold and press = Windows captures only the currently active window and copies it to the clipboard. Right now I'm using maComFort which it gives me functionality of Mac like keyboard that I can take screenshot in such the same way with Mac OS X but really it changes many of the key in my keyboard in the way I don't like. So I wonder if there is a better way?

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• Preventing Email Spoofing

  - by DT

  I use Google Apps with my domain. Recently, we have begun to receive spam that gets past Google's spam filters. They are from our own email addresses. I am wondering how to prevent this kind of email spoofing. We use an SPF record with the "~all" setting. I'm wondering if I can upgrade that to "-all". However, Google Apps recommends against it. Also, I'm not 100% sure that our SPF record is complete. Any suggestions? Thank you ever so much.

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• BIND9 DNS Server

  - by Stevecomptech

  I am trying to set up my own DNS server solaris 10, i used the setup guide from http://www.logiqwest.com/dataCenter/Demos/RunBooks/DNS/DNSsetup.html I tried to join windows xp clients to the domain i configured using the above guide but i was unable to join giving me these errors, An error occurred when DNS was queried for the service location (SRV) resource record used to locate adomain controller for domain MYDOMAIN.COM. The error was: "No records found for given DNS query." (error code 0x0000251D DNS_INFO_NO_RECORDS) The query was for the SRV record for _ldap._tcp.dc._msdcs.MYDOMAIN.COM Where could i be going wrong? Your assistance will highly be appreciated

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