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  • Book Review: Optimizing Windows 7 Pocket Consultant

    It is essential to optimize Windows 7 in order to make use of the features to its full potential. However, it is difficult to find and locate the various elements which require optimization. In this review, Anand examines the contents of Optimizing Windows 7 Pocket Consultant book authored by William Stanek. After reading the review, you will be in a position to judge whether the book will be suitable for you or not.

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  • Fusion Human Capital Management - Enterprise Grade Software As a Service

    Tune into this conversation with Anand Subbaraman, Senior Director of Product Strategy for Fusion HCM and Technology, to learn how Oracle is delivering offer a complete HCM SaaS application with single-vendor accountability. Unlike other vendors, which rely on other partners to complete their solutions, Oracle Fusion HCM includes integrated modules for HR, Payroll, Benefits, Compensation, Performance, along with industry-firsts such as Workforce Predictions, Network at Work, and Talent Review - all available on the Cloud.

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  • Book Review: MCTS Self-Paced Training Kit (Exam 70-667): Configuring Microsoft SharePoint 2010

    Microsoft Certification Exams are tough even though it is multiple choice. You should refer to training kits available on the market before attempting an exam. Configuring Microsoft SharePoint 2010 is a comprehensive Self-Paced Training Kit for those looking to obtain Microsoft Certified Technology Specialist Certification. The book examines all aspects of Microsoft SharePoint 2010 in a detailed manner with the help of a mock exam in the accompanying CD-ROM. In this review, Anand analyses the content of the book and also provides suggestions for the improvement.

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  • Choosing Unlimited Web Hosting

    There are so many web hosting companies available either online or offline and one can select any one depending upon the choice and interest. Nowadays, several hosting companies are providing unlimit... [Author: Anand Maheshwari - Web Design and Development - May 16, 2010]

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  • DNS lookup failed --- dig: couldn't get address for 'ns1.p34.dynect.net': failure

    - by Udit Gupta
    I am a Network Admin from India, managing a large University Network of more than 15000 users. Here goes my problem - My DNS is unable to get ip address for ns1.p34.dynect.net. when i use dig +trace twitter.com on my DNS Server i get this messages:- dig: couldn't get address for 'ns1.p34.dynect.net': failure and this is happening with all those sites listed with dynect.net like twitter,linkedin,quora etc. Find the attached screen shot for the same message. Right now I have temporally fixed (not actually fixed) the problem using Google DNS (8.8.8.8) What could be the issue as It is able to resolve all other sites perfectlly. Thanks Edit: As suggested in answer, I am attaching one more screen shot.

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  • HTTP response time profiling

    - by Sparsh Gupta
    Hello I have a nginx reverse proxy. The server is close to serving 600-700 requests per second. I have a Munin HTTP load time plugin which is outputting this: http://monitor.wingify.com/munin/visualwebsiteoptimizer.com/lb1.visualwebsiteoptimizer.com-http_loadtime.html Now, the problem is I am seeing some spikes in the graph. Expected response times should always be under 200ms. I am keeping an eye on syslog and messages but I am unable to figure out the actual cause of this. I was wondering if there is any good HTTP response time profiling system which I can install / embed with this nginx server and get a detailed reports / logs on the breakup of time taken by different things and what exactly is the cause of the spikes. The profiling system would also help me understand bottlenecks and how can I further optimize the latency. Most important right now is to investigate the cause of the spikes in the HTTP load time graphs (similar pattern is reported by external monitors - Pingdom) and to fix it to get consistent response times Thanks

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  • possible SYN flooding on port 80. Sending cookies

    - by Sparsh Gupta
    I recently had a server downtime. I looked everywhere and the only thing I found in my log files is: Feb 17 18:58:04 localhost kernel: possible SYN flooding on port 80. Sending cookies. Feb 17 18:59:33 localhost kernel: possible SYN flooding on port 80. Sending cookies. Can someone give me more information about it. WHat is it, How can I debug the cause and how can I fix the same. I also posted ipconntrack suddenly became toooo large which has another data point I found unusual, wondering if the two things is connected as they occured exactly at the same time but at different servers. One at reverse proxy and other at actual backend Varnish server) Thanks

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  • Uknown nginx Error Messages

    - by Sparsh Gupta
    Hello, I am getting some nginx errors as I can see them in my error.log which I am unable to understand. They look like: ERRORS: 2011/03/13 21:48:21 [crit] 14555#0: *323314343 open() "/usr/local/nginx/proxy_temp/0/95/0000000950" failed (13: Permission denied) while reading upstream, client: XX.XX.XX.XX, server: , request: "GET /abc.jpg 2 HTTP/1.0", upstream: "http://192.168.162.141:80/abc.jpg", host: "example.com", referrer: "http://domain.com" 2011/03/13 22:00:07 [crit] 14552#0: *324171134 open() "/usr/local/nginx/proxy_temp/1/95/0000000951" failed (13: Permission denied) while reading upstream, client: XX.XX.XX.XY, server: , request: "GET mno.png HTTP/1.1", upstream: "http://192.168.162.141:80/mno.png", host: "example.com", referrer: "http://domain2.com" I also looked at these locations but found that there is no file by this name. root@li235-57:/var/log/nginx# /usr/local/nginx/proxy_temp/1/ 00/ 01/ 02/ 03/ 04/ 05/ 06/ 07/ 08/ 09/ 10/ 11/ 12/ 13/ 14/ 15/ 16/ 17/ 18/ 19/ 20/ 21/ 22/ 23/ 24/ 25/ 26/ 27/ 28/ 29/ 30/ 31/ 32/ 33/ 34/ 35/ 36/ 37/ root@li235-57:/var/log/nginx# ls /usr/local/nginx/proxy_temp/0/ 01/ 02/ 03/ 04/ 05/ 06/ 07/ 08/ 09/ 10/ 11/ 12/ 13/ 14/ 15/ 16/ 17/ 18/ 19/ 20/ 21/ 22/ 23/ 24/ 25/ 26/ 27/ 28/ 29/ 30/ 31/ 32/ 33/ 34/ 35/ 36/ 37/ Can someone help me whats going on / how can I debug this more and better fix this Thanks

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  • Upgrade MySQL on Plesk on Windows

    - by Cyril Gupta
    I just got a nasty surprise when I installed a website in Unicode Hindi (Indian language) on a server, all freshly entered unicode data is turning into question marks on the server. On my dev machine it works perfectly. I found that I have MySQL version 5.0.45 (installed in default by Plesk I guess). On my dev machine i have version 5.1.33. I believe the problem could be due to the version difference. The new version of MySQL apparently has better support for Unicode than the older one. I want to upgrade MySQL on my Windows Server machine with Plesk installed on it I am reluctant to just install the new version using the mysql installer because Plesk maintains some custom settings for mysql and I am afraid the new version could change those settings and break my db. Can anyone tell me do I have to do anything special to install MySQL on plesk on windows or can I just use the new version installer?

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  • Server Configuration / Important Parameter for 500Req/Second

    - by Sparsh Gupta
    I am configuring a server to be used as nginx server for a very heavy traffic website. It is expected to receive traffic from a large number of IP addresses simultaneously. It is expected to get 500Req/Second with atleast 20Million unique IPs connecting it. One of the problems I noticed in my previos server was related to iptables / ipconntrack. I am not aware of this behaviour and would be glad to know which all parameters of a ubuntu / debian (32/64) bit machine should I tweek to get maximum performance from the server. I can put in a lot of RAM on the server but mission critical task is the response times. We ideally dont want any connection to be hanging / timing out / waiting and want as low as possible overall response times. P.S. We are also looking for a kick ass freelancer system admin who can help us figuring / setting this all up. Reach me incase you have some spare time and interested in working on some very heavy traffic website servers.

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  • DHCP request error. Send_packet now permitted, How to debug, What does it mean

    - by Sparsh Gupta
    Hello I recently installed CSF firewall and have made live a new server which is accepting around 600req/second. Its basically a reverse proxy and I found in pingdom and munin that for a particular time, the response times of the server increased by 3 folds. I looked into logs and exactly at that point, I found loads of entries like this: Feb 27 15:22:09 li235-57 dhclient: DHCPREQUEST of <My IP address> on eth0 to 207.192.68.72 port 67 Feb 27 15:22:09 li235-57 dhclient: send_packet: Operation not permitted Can you help me understand what went wrong and what exactly happened. Is there any settings I should change in CSF or any pointer to debug this further Thanks

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  • Upgrade MySQL on Plesk on Windows

    - by Cyril Gupta
    I just got a nasty surprise when I installed a website in Unicode Hindi (Indian language) on a server, all freshly entered unicode data is turning into question marks on the server. On my dev machine it works perfectly. I found that I have MySQL version 5.0.45 (installed in default by Plesk I guess). On my dev machine i have version 5.1.33. I believe the problem could be due to the version difference. The new version of MySQL apparently has better support for Unicode than the older one. I want to upgrade MySQL on my Windows Server machine with Plesk installed on it I am reluctant to just install the new version using the mysql installer because Plesk maintains some custom settings for mysql and I am afraid the new version could change those settings and break my db. Can anyone tell me do I have to do anything special to install MySQL on plesk on windows or can I just use the new version installer?

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  • Sql Server 2005 database lost, How to recover all records. MDF/LDF size is same as it should be

    - by Shantanu Gupta
    Few months back, I installed a sql server 2005 on one of my client machine. I gave him a backup option to take backup timely but he never took any backup. Today he called me that "i m not able to see any record of mine." I visited at my clients system and saw that none of the record was present on the tables. There was not even a single row in any of the tables. Then I checked if he has any backup file which i found to be absent. I asked him the reason what could be the possible cause. He said it might be due to virus. After this I checked the size of mdf and ldf file and found it should be what it is. when i created his server mdf ldf file had 2MB of database now it is 83 MB and 193Mb mdf/ldf respectively. This shows the data is still present in it but it is not being displayed. What could be the possible cause and how can i restore all data back to my tables ?

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  • iptables forward rule not working in openwrt

    - by Udit Gupta
    I am trying to apply some iptables forwarding rules in openwrt. Here is my scenario - My server has two cards ath0 and br-lan. br-lan is connected to internet and ath0 to private network. The other m/c in n/w also has ath0 that connects with this server's ath0 and they are able to ping each other. Now, I want other m/c in network to use internet using br-lan of server so I thought of using iptables forwarding rule- Here is what I tried - Server : $ ping 1.1.1.6 // <ath0-ip of client> works fine $ iptables -A FORWARD -i ath0 -o br-lan -j ACCEPT $ /etc/init.d/firewall restart Client : $ ping 1.1.1.5 // <ath0-ip of server> works fine $ ping 132.245.244.60 // <br-lan ip of server> (not working) I am new to iptables stuff and openwrt. What I am doing wrong here ?? Any other help if anyone could suggest for my scenario Edit- m/c - machine n/w - network

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  • Microsoft signed driver appears as publisher not verfied

    - by Priyanka Gupta
    Task at hand: Microsoft sign drivers on Win 7. I microsoft signed my driver package 3 times every time thinking I might have missed a step or something. However, I cannot seem to get rid of the Windows Security error message "Windows can't verify the publisher of this driver software'. This is not the first time I have signed the driver packages. I was successfully able to sign other driver packages a few months ago. However, with this driver package I keep getting Windows security dialog box. Here's the procedure I follow - Create a new cat file using INF2CAT tool. Self sign the driver using a Versign Class 3 Public Primary Certification Authority - G5.cer. Run the microsoft tests on DTM Servers and clients with the devices that use this driver. Create WLK submission package. Self sign the cab file. Submit the package for certification. The catalog file that comes back after successfully passing tests says Name of signer "Microsoft Windows Hardware Comptibility Publisher". When I check the validity of signature using SignTool, it says the signature is vaild. However, when I try to install the driver with new signed catalog file the windows complain. Any ideas? Edit 11/12/2012: Reply to Eugene's comment Thanks for the help, Eugene. Yes. I did sign two other driver packages before. One of them was modified version of WinUSB driver. I am using the same certificate I used when I signed those two driver packages a few months ago. It costs $250 per signing from Microsoft. I would think that Microsoft would complain about it during certification if the certificate is wrong. I use the following command to self sign the CAT file. I don't have to specify the ceritificate name as there's only one certificate in the directory - Signtool sign /v /a /n CompanyName /t http://timestamp.verisign.com/scripts/timestamp.dll OurCatalogFile.cat Below is the result from running Verify command on the Microsoft signed OurCatalogFile.cat C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\x64signtool verify /v "C:\User s\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Verifying: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Hash of file (sha1): BDDF39B1DD95881B462164129758A7FFD54F47D9 Signing Certificate Chain: Issued to: Microsoft Root Certificate Authority Issued by: Microsoft Root Certificate Authority Expires: Sun May 09 18:28:13 2021 SHA1 hash: CDD4EEAE6000AC7F40C3802C171E30148030C072 Issued to: Microsoft Windows Hardware Compatibility PCA Issued by: Microsoft Root Certificate Authority Expires: Thu Jun 04 16:15:46 2020 SHA1 hash: 8D42419D8B21E5CF9C3204D0060B19312B96EB78 Issued to: Microsoft Windows Hardware Compatibility Publisher Issued by: Microsoft Windows Hardware Compatibility PCA Expires: Wed Sep 18 18:20:55 2013 SHA1 hash: D94345C032D23404231DD3902F22AB1C2100341E The signature is timestamped: Tue Nov 06 11:26:48 2012 Timestamp Verified by: Issued to: Microsoft Root Authority Issued by: Microsoft Root Authority Expires: Thu Dec 31 02:00:00 2020 SHA1 hash: A43489159A520F0D93D032CCAF37E7FE20A8B419 Issued to: Microsoft Timestamping PCA Issued by: Microsoft Root Authority Expires: Sun Sep 15 02:00:00 2019 SHA1 hash: 3EA99A60058275E0ED83B892A909449F8C33B245 Issued to: Microsoft Time-Stamp Service Issued by: Microsoft Timestamping PCA Expires: Tue Apr 09 16:53:56 2013 SHA1 hash: 1895C2C907E0D7E5C0292B92C6EA8D0E236F525E Successfully verified: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Number of files successfully Verified: 1 Number of warnings: 0 Number of errors: 0 Thank you!

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  • Microsoft signed drivers appears as publisher not verfied

    - by Priyanka Gupta
    Task at hand: Microsoft sign drivers on Win 7. I microsoft signed my driver package 3 times every time thinking I might have missed a step or something. However, I cannot seem to get rid of the Windows Security error message "Windows can't verify the publisher of this driver software'. This is not the first time I have signed the driver packages. I was successfully able to sign other driver packages a few months ago. However, with this driver package I keep getting Windows security dialog box. Here's the procedure I follow - Create a new cat file using INF2CAT tool. Self sign the driver using a Versign Class 3 Public Primary Certification Authority - G5.cer. Run the microsoft tests on DTM Servers and clients with the devices that use this driver. Create WLK submission package. Self sign the cab file. Submit the package for certification. The catalog file that comes back after successfully passing tests says Name of signer "Microsoft Windows Hardware Comptibility Publisher". When I check the validity of signature using SignTool, it says the signature is vaild. However, when I try to install the driver with new signed catalog file the windows complain. Any ideas? Edit 11/12/2012: Reply to Eugene's comment Thanks for the help, Eugene. Yes. I did sign two other driver packages before. One of them was modified version of WinUSB driver. I am using the same certificate I used when I signed those two driver packages a few months ago. It costs $250 per signing from Microsoft. I would think that Microsoft would complain about it during certification if the certificate is wrong. I use the following command to self sign the CAT file. I don't have to specify the ceritificate name as there's only one certificate in the directory - Signtool sign /v /a /n CompanyName /t http://timestamp.verisign.com/scripts/timestamp.dll OurCatalogFile.cat Below is the result from running Verify command on the Microsoft signed OutCatalogFile.cat C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\x64signtool verify /v "C:\User s\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Verifying: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Hash of file (sha1): BDDF39B1DD95881B462164129758A7FFD54F47D9 Signing Certificate Chain: Issued to: Microsoft Root Certificate Authority Issued by: Microsoft Root Certificate Authority Expires: Sun May 09 18:28:13 2021 SHA1 hash: CDD4EEAE6000AC7F40C3802C171E30148030C072 Issued to: Microsoft Windows Hardware Compatibility PCA Issued by: Microsoft Root Certificate Authority Expires: Thu Jun 04 16:15:46 2020 SHA1 hash: 8D42419D8B21E5CF9C3204D0060B19312B96EB78 Issued to: Microsoft Windows Hardware Compatibility Publisher Issued by: Microsoft Windows Hardware Compatibility PCA Expires: Wed Sep 18 18:20:55 2013 SHA1 hash: D94345C032D23404231DD3902F22AB1C2100341E The signature is timestamped: Tue Nov 06 11:26:48 2012 Timestamp Verified by: Issued to: Microsoft Root Authority Issued by: Microsoft Root Authority Expires: Thu Dec 31 02:00:00 2020 SHA1 hash: A43489159A520F0D93D032CCAF37E7FE20A8B419 Issued to: Microsoft Timestamping PCA Issued by: Microsoft Root Authority Expires: Sun Sep 15 02:00:00 2019 SHA1 hash: 3EA99A60058275E0ED83B892A909449F8C33B245 Issued to: Microsoft Time-Stamp Service Issued by: Microsoft Timestamping PCA Expires: Tue Apr 09 16:53:56 2013 SHA1 hash: 1895C2C907E0D7E5C0292B92C6EA8D0E236F525E Successfully verified: C:\Users\logotest\Documents\serialdriversigning\OurCatalogFile.cat" Number of files successfully Verified: 1 Number of warnings: 0 Number of errors: 0 Thank you!

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  • Connect laptop to mobile wifi

    - by Arnab Sen Gupta
    I have a nokia N97. In my apartment there's a wifi network that we all use to connect to the internet. But for the past few days my laptop is not able to find the network..Initially I thought it was a problem of the network,but hen I found out that others were able to use it..My vista os laptop is able to detect other available networks but not the required one..Then i tried to connect my cell phone to the network and it did easily!! I tried restoring the network settings to default but it showed the network for just 2 mins and it ws back to square one.. I wanted to know can I connect my laptop to the cell using USB and browse internet through that?? I have done it when I used GPRS but am not sure if it cn be done in this situation when the cell is connected toa wifi network..plz help..

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  • How to install MySQL on Windows 7

    - by akash gupta
    Please help me how to install MySQL on Windows 7. When I tried to install, I am getting errors as: The security settings could not be applied to the database because the connection has failed of the following errors ERROR NR:1045 Access denied for user 'root@'localhost(using password yes). I tried to uninstall MySQL completely and install again, but it shows this error again and again. I have changed my firewall setting also and tried unstalling antivirus sotware too. But it also did not work.

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  • Very Large number of connections in TIME_WAIT state; Server is slow, ipconntrac

    - by Sparsh Gupta
    I have a nginx server with load balancing and reverse proxy. Right now its behing another nginx but very soon I plan to make it front, where it will receive TCP connections from clients directly at a rate of 500req/second I am having some big troubles with the server. I have pasted my configurations here and I am kinda sure that the problem is with ipconntrac and similar things which are alient to me http://paste.org/pastebin/view/28543 root@load_balancer:/proc/sys/net/ipv4# netstat -an|awk '/tcp/ {print $6}'|sort|uniq -c 67 CLOSING 727 ESTABLISHED 173 FIN_WAIT1 183 FIN_WAIT2 19 LAST_ACK 5 LISTEN 447 SYN_RECV 1 SYN_SENT 27970 TIME_WAIT Its a ubuntu machine with mainly nginx (load balancer and reverse proxy) installed. It surely isnt great. Can you help me understand whats going on and how can I fix it. This is my live server and I am sure its in a bad shape right now. Any document or commands to fix this, or settings I should make to make this better and reduce time wait and fin_wait1/2 better would be awesome.

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  • Wireless connection switches off IP address

    - by Sanjay Gupta
    I have a Lenovo laptop with windows XP and a wireless connection at home. The wireless connection works when initially I switch on the computer. but if I leave it for even 5 minutes, the wireless is gone. Then I have to shut it off and start computer all over again, waiting for 5 minutes. Even if the wireless speed is 48Mbps or better, it gives the message "Renewing IP address" and gets stuck there not moving to the next stage. Other laptop in the household works fine and can be left on. Why does this happen ? I suspect that IP address is the problem and somehow is not registered in all the necessary files.

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  • Can I automatically login to ssh using passwords from OS X keychain?

    - by Chaitanya Gupta
    I need to login to an ssh server which doesn't support key based authentication. And I don't want to type the passwords every time. I am using OS X Lion (10.7.2). I have added the passwords to the OS X keychain[1]. Now I can retrieve the password automatically from the keychain using /usr/bin/security, however I can't find a way to send this password to the ssh prompt. I also tried sshpass. However when I try to run it ssh exits with the following error: ssh_askpass: exec(/usr/libexec/ssh-askpass): No such file or directory Permission denied, please try again. ssh_askpass: exec(/usr/libexec/ssh-askpass): No such file or directory Permission denied, please try again. ssh_askpass: exec(/usr/libexec/ssh-askpass): No such file or directory Permission denied (publickey,password). Is there anyway I can login to this server without having to enter the password every time? Notes The scheme I use in keychain looks like this Kind: Internet password Account: username Where: ssh://server-name

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  • Stop Munin messages from /var/log/syslog

    - by Sparsh Gupta
    Hello I am using munin on a system which is adding a log entry in syslog everytime the munin-node cron job executes. It is not an issue but it sometimes makes other errors spotting difficult. There are entries like Feb 28 07:05:01 li235-57 CRON[2634]: (root) CMD (if [ -x /etc/munin/plugins/apt_all ]; then /etc/munin/plugins/apt_all update 7200 12 >/dev/null; elif [ -x /etc/munin/plugins/apt ]; then /etc/munin/plugins/apt update 7200 12 >/dev/null; fi) every 5 minutes and I was wondering how can I stop the messages going into syslog. For munin specific errors I anyways have to keep an eye on /var/log/munin/* Thanks Sparsh

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  • Why does Midori on Fedora Linux pretend to be Safari on Mac OS X?

    - by Suhail Gupta
    If you are using Google Chrome on Linux then the User-Agent request header will look like this: Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1 From above we come to know the browser is Chrome and OS is Linux (I guess!). But when I log from the browser Midori using the same OS which is Linux (Fedora) I get to see this: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-us) AppleWebKit/535+ (KHTML, like Gecko) Version/5.0 Safari/535.4+ Midori/0.4 Why does it say Macintosh?

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