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Last seen: May 09, 2014 1:04 PM EDT
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Rate: $50.00 USD/hour
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Konstantin Koltsov

Senior Systems / Network / Security Administrator

Username: kokl

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Location: Riga, Latvia

Member since: April 2011

Reputation:

5.0/5

(27 reviews)

5.4
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2 users have recommended this freelancer.

My skills:

My projects:

  • [Sealed]
    5.0
    Profile image for Seller EdwenRiw2

    EdwenRiw2

    Mar 24, 2014

    Fine cooperation<br/>Fine cooperation

    Project Description:Needed skillfull linux admin for a small webhosting company. BIG plus is a knowledge of IPS Config3 knowledge and being backed by at least one other man or small company. I am havim occational smaller...
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  • $220.00 USD
    5.0
    Profile image for Seller tubaad

    tubaad

    Feb 15, 2014

    Very professional expert that involved himself fully in the project. Even suggest better solutions than those you asked for. Very good communications and availability.Highly recommended

    Project Description:I have a root server with Magento Community edition 1.7.0.2. It uses Memcached and APC to speed up the pages. Server is running Apache and nginx. Varnish is installed on the server to get full page caching in Magento using the Turpentine Varnish extension for Magento...
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  • $30.00 USD
    5.0
    Profile image for Seller KalinaT23

    KalinaT23

    Feb 7, 2014

    Excellent understanding of the project, unparalleled knowledge in underlying network protocols, highly recommended!!

    Project Description:Hello, i noticed you are an expert in networking, i have working IPIP / GRE tunnels but i need to do selective traffic filtering trough them. for example instead of all traffic passing trough them i only...
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  • $50.00 USD
    5.0
    Profile image for Seller loopbot

    loopbot

    Feb 7, 2014

    Superb help with my nginx php server configuration, everything was done in minutes. Great advice on my project and for the basic stuff about server setup. I would definitely recommend him.

    Project Description:Hi I need someone to configure nginx on my CentOS server and i need to be able to open php pages properly. Currently my server has nginx installed but php pages are not opening .
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  • €200.00 EUR
    5.0
    Profile image for Seller conanito

    conanito

    Jan 19, 2014

    I am really amazed by his level of professionalism and his state-of-the-art knowledge. One of the best I have ever worked with! Highly recommended!

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
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  • $35.00 USD
    5.0
    Profile image for Seller vicol

    vicol

    Jan 18, 2014

    Great Job, Thank you very much! Heiko Haase

    Project Description:Hi, after Plesk update the webiste is withe. Who can help fast! THX
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  • $35.00 USD
    5.0
    Profile image for Seller fulliptv

    fulliptv

    Jan 18, 2014

    Excellent ! Recommended as he did a wonderful job. Experience talks.

    Project Description:I have a website, with php files. index.php users.php groups.php api.php test.php I want to make htaccess rewrite and / or php file to make this : When accessing / , should be accessed the index...
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  • $222.00 USD
    5.0
    Profile image for Seller goazguy

    goazguy

    Jan 17, 2014

    One of the best and knowledgeable developer I've worked with for the past 2 years. Excellent communication, provides best solution to the problem quick and easy. I would definitely recommend Konstantin hundreds of times! A++++++++++

    Project Description:Dev with following experience CakePHP and Nginx Site not working properly and I&#039;m having problem with images not being loaded not sure if its due to cache engine and fix the site load issue, make it load faster in any means possible...
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  • £200.00 GBP
    5.0
    Profile image for Seller brucemartin

    brucemartin

    Jan 17, 2014

    Superb communication skills, very knowledgeable and a pleasure to work with. Will use again!

    Project Description:Hi, This is an urgent small project to install and configure the ASSP software (http://assp.sourceforge.net) on 2 Linux servers in a Master / Slave config. I will provide 2 x CentOS 6.5 boxes (minimal...
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  • $300.00 USD
    5.0
    Profile image for Seller db124

    db124

    Jan 13, 2014

    Konstantin did a great job - extremely fast in identifying the the missing configuration settings - great communications. Would absolutely hire again.

    Project Description:This is a repost of a previous project that was successfully completed, https://www.freelancer.com/projects/2393556.html Running a standard RHEL 6 server. We exchange files with another vendor and...
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    Konstantin Koltsov has not completed any projects.
  • $250 USD In Progress

    i have a few issues with my site:1) instability (flututaion of performance)2) Intermitten checkout issue related to internal server error3) magento cron not running jobs!further to this i asked my host to conduct a performance review on my server: they found the following issues:A.+ MySQL Server ConfigurationSeverity: HighB.+ Fatal ErrorsSeverity: Highhttp://cloudtechreports.com/reports/www.youreyeslie.com_1392141782.pdfmore details can be found on the attachment! furthermore, relating to the main issues:1) PERFORMANCE everyday i get detection warnings that performance swings by greater than 50% normally when this happens i also have an issue with customer not being able to checkout basically customers fill out all the details on the one page checkout and then just as its about the direct to paypal, the site directs back to the start of the checkout process, the only way i can fix this is by restarting the whole server this normally fixes the issue, but obviously this is just a work around and i miss a lot of orders when i don&quot;t know that i have to restart the severexample of issues shown from montioring.&quot;MageSpeedTest.com has detected a variation of over 50% on your latest automatic performance test.We measured 1.08 Transactions/s and an average response time of 6.79 s/Transaction. &quot;MageSpeedTest.com has detected a variation of over 50% on your latest automatic performance test.We measured 0.47 Transactions/s and an average response time of 14.01 s/Transaction.MageSpeedTest.com has detected a variation of over 50% on your latest automatic performance test.We measured 0.82 Transactions/s and an average response time of 8.5 s/Transaction.these are the last three results from within the last 12 hours2) Internal Server Error - sometimes the checkout will instead of re-direct to paypal will re-direct to start of checkout process, this normally occurs when the internal server error message is shown instead of the customers cart content.The server encountered an internal error or misconfiguration and was unable to complete your request.Please contact the server administrator to inform of the time the error occurred and of anything you might have done that may have caused the error.More information about this error may be available in the server error log.3) magento 1.7 with AOE scheduler installed, i need exisiting cron setup correctly setup as hearbeart is running and a schdule is generated, but no jobs are being activiated....further more i intermittently have issue with checkout as discribed below:work is complete once cron has been setup and fully tested and shown to bve calling internal magento jobs and the the other issues have been fixed as well as following and implmenting my.cnf recommnedations (ecommend modification of the following variables:query_cache_sizejoin_buffer_sizetmp_table_sizemax_heap_table_sizeinnodb_buffer_pool_size)and fixing the fatal errors!

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  • $250 USD In Progress

    We would like to make Migration from Plesk 11 dedicated server to a new ISPConfig3 dedicated server. The destination server with ISPConfig3 will be the same type of server like source server. The configuration ( mailserver-postfix, modsecurity, firewall …) from the source server will be the same to the destination server. Something like a clone-back up server but instead of Plesk 11 control panel I will use ISPConfig3. In the new server must be installed with full features and security ISPConfig3 last version. Before full payment the new server must be full funtioned

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  • $100 USD In Progress

    Language: JQueryDatabase: MongoDBWe are looking for someone with both JQuery & MongoDB experience 3/4 bugs on our JQuery website.Documentation on the bugs will be provided.You should be able to start work immediatelyBudget: $100

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  • $100 USD In Progress

    I need some one Familiar with vicidial to fix a error i have in installation ...No one is in your session: 8600051If youve seen this error it could be a quick fix for you.. Thanks

  • $50 USD/hr Mar 23, 2014

    Hi I&quot;m looking someone to configure my serverI need a configuration nginx-rtmp-module on my server / add security token to playerCan you do it?what is the charge?Martin

  • $2000 USD Jan 21, 2014

    provide a active directory design for a medium size business (best practice)virtualize all server using xenserver. HA, redundancy, disaster recoveryefficient use of hardwareprovide hardware specs for each server to properly handle loadsno need for desktop virtualizationServers neededActive directoryfile server X 3print serverradiusDNSDHCPnumber of users: 200Cisco network environmentHardware inventoryDell Poweredge R720XD X 2Dell Poweredge 2970 X2HP Proliant DL360 G5SAN

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  • $150 USD Jan 19, 2014

    i am buy VOIP solution for goip traffic

  • $4210 CLP/hr Jan 14, 2014

    I need to install Interspire Power MTA send bulk email through a Email Server with multiples IP , have 255 Ips or more. Rotate this IPS automaticly with systems antiblock for SPAM , and configure Rotate Subject and Froms , I need to make multiples email campaings with Interspire Power MTA , have posibility to send more than 1 millon emails x day. Send Hotmail , Yahoo , Gmail , and corporate emails. I need advices about wich provider I should to use and Wich are the best practices about this. \r\n\r\nIf is posible , have a system what monitoring my IPS , ir order to avoid Blacklist , and with a systems to unblock IPS.

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  • $500 USD Dec 20, 2013

    We have a magento site running on Magento ver. 1.7.0.2 with a SSL certificate installed and verified to be working as it should.We are getting a number of customers who state that after making a purchase on our site, they had their credit cards compromised and used for fraudulent purchases. There is security problem on our site during checkout.We are looking for an experienced developer that can do a complete security audit, look for and find any and all security holes that may cause this to happen, fix it and report the problem to us.Please bid only if you have experience in fixing security vulnerabilities on magento.

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    Konstantin Koltsov does not have any open projects.
    Konstantin Koltsov does not have any work in progress.
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