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• Temporarily Utilizing 304 Header on Apache for Crawlers

  - by Volomike

  I have a client who has a hosting arrangement with 400 customer sites all hosted through SuPHP in CGI mode on Apache. The sysop is now gone and the client is calling on me for rolling out a new PHP thing. Trouble is -- server load is very high right now and we have found that it's due to the crawlers. We had one customer in particular who complained of slow websites, and we engaged a 304 header plugin in his site against most crawlers, and his site perked right up. We'd like to lower that load by issuing a global 304 header to all the crawlers, letting human visitors through. I have a long list of user agent keywords to trap for. What's the best way to temporarily engage that global 304 header, while allowing human visitors to get right on through? I mean, I could roll out 400 .htaccess file changes, but it would be ideal to make this change in like one central Apache config and then it automatically affect all the sites at once.

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• How to configure Exchange Server with AutoReply that sends the reply only once?

  - by Abel

  If you configure Exchange Server 2007 for auto-reply on a public address, and the reply is sent to an address that also has auto-reply or out-of-office-auto-reply, then Exchange Server will receive a new message, same from-address, and will again send an auto-reply. This can go on forever and can potentially lead to a DoS situation. How can I prevent multiple sending of auto-reply to the same address, preferably in a given timeframe (to prevent legitimate multiple mails to be treated incorrectly), using Exchange Server 2007? Our XS hosting provider says it cannot be done, but that strikes me as odd.

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• Email setup on dedicated servers

  - by zaf

  Am thinking seriously of renting a dedicated server. Now I know how to setup apache and the underlying scripting engines and databases but I'm a bit clueless with how the emails would work. Currently, I'm on a shared hosting account and I get a fancy gui which allows me to nicely add a domain, setup nameservers and then the emails for all domain names with either simple forwarding or the full account which also has a webmail app behind it. What options do I have? Are there non complicated ways to have the same email setup experience? Or are there reliable external providers I could use? My past experiences with sendmail/postfix have always been fuzzy - not exactly knowing whats happening behind the scenes.

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• Custom dedicated email server combined with Amazon AWS?

  - by Simon

  Hi there. We are considering moving our servers to Amazone EC2 cloud. The only thing that stops right now is their problems with ip ranges banned from spam mail lists like SORBS. We are considering leaving one dedicated server in our current hosting, the one which we use to send mail (and other several features we will move to EC2), in order to be able to send the mails from this smtp server instead from Amazon. So, the idea is to have our sites hosted in EC2, and when they need to send mail, redirect they to our "local" smtp server. Do you think it´s viable? Can you think on a better solution? Thanks in advance, Simon.

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• VPN networking issue

  - by DuncanDavies

  I have 2 servers hosted in the cloud. One an application server, one a VPN server, both running Win2008. Both have a local IP address assigned by DHCP in different network subnets, 10.227.55.0 (VPN) and 10.231.5.0 (App Server). These servers can ping each other. My VPN client connects in to the VPN server (using a L2TP connection on a Win7 client). It is assigned an IP Address from the VPN server's static pool (the VPN server takes 192.168.100.1, the client is given 192.168.100.2). The client can ping both the 192.168.100.1 address of the VPN server, and its 'local' IP address (10.227.55.X). What the client can't do is ping the App Server. How can I configure routing so that my client can access the App Server, without hard-coding any of the DHCP IP addresses anywhere? thanks Duncan

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• powweb and cloudflare

  - by sonill

  i am using powweb as hosting provider and cloudflare as free cdn. Its been few weeks since my website is down and it says "website down, no cache version available". And to add more to it, I cannot access powweb or any website hosted from powweb from my ISP connection. So i am facing trouble solving my cloudflare issue. I just wanted to know if the problem I am facing is from cloudflare side or powweb side. Some time i can access my website from my end but my friend in another country says its down for days. So is there any suggestion guys?? thank you

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• Adding IP address to OpenVZ VPS (OpenVZ Web Panel)

  - by andy

  I apologise if I sound at all dumb. This is my first dedicated server having used a VPS for over a year and I'm trying to setup a VPS on this new server. I purchased a subnet from my hosting provider that I believe allows me 6 usable IP addresses: 177.xx.xxx.201 - 177.xx.xxx.206 The subnet address looks like this: 177.xx.xxx.200/29. I've gone on my server and added them like it said on a wiki like so: ip addr add 177.**.***.201/29 dev eth0 I done that for all six and now when I go to them in the browser they point to my server. The problem is, I'm using OpenVZ web panel to create VMs (http://code.google.com/p/ovz-web-panel/) so I created a VM and assigned one of those IPs to it. However when SSHing to that IP it SSH's to the dedicated server and not the VM. Am I missing something?

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• DNS Server Spoofed Request Amplification DDoS - Prevention

  - by Shackrock

  I've been conducting security scans, and a new one popped up for me: DNS Server Spoofed Request Amplification DDoS The remote DNS server answers to any request. It is possible to query the name servers (NS) of the root zone ('.') and get an answer which is bigger than the original request. By spoofing the source IP address, a remote attacker can leverage this 'amplification' to launch a denial of service attack against a third-party host using the remote DNS server. General Solution: Restrict access to your DNS server from public network or reconfigure it to reject such queries. I'm hosting my own DNS for my website. I'm not sure what the solution is here... I'm really looking for some concrete detailed steps to patch this, but haven't found any yet. Any ideas? CentOS5 with WHM and CPanel. Also see: http://securitytnt.com/dns-amplification-attack/

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• Exchange Transport Service Started but not working

  - by Philippe

  Good day, Here is the problem : We are hosting a Microsoft Exchange Server. Everything working fine until recently, where the mail transport seems to go wrong. We almost have to restart the service every morning. The thing is that the transport service is started, but the mail are not delivered to the users and senders to our server get a delayed delivery notification. When we restart the service, all the mail is then delivered to the users and we're good to go for a day or two. Things I've noticed : The store service is growing to around 6 Gb of used RAM, and the w3wp.exe service is hanging around 700mb RAM. Is there a way to schedule a restart of the transport role every 4 hours or something while I'm solving the issue so I don't have to worry when I leave for the week-end? And most of all...does anyone have any idea on how to solve this issue? Thanks, Philippe

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• What is a good and safe way of sharing certificates?

  - by Kaustubh P

  I have a few certificates, that are used as authentication, to ssh into my servers on the Amazon cloud. I rotate those certificates weekly, manually. My question is, I need to share the certificates with some colleagues, a few on the LAN, and a few in another part of the country. What is the best practice to share the certificate? My initial thoughts were Dropbox and email. We dont host dedicated email servers with encryption and all, and dont have a VPN. Thanks.

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• innodb recovery from .ibd files

  - by mr heLL

  My website has crashed a few days ago. The hosting company says some innodb database crashed. They sent a MySql data folder. I tried to restore the database, but phpmyadmin is only showing MyISAM tables. I checked the database with navicat. When I click innodb table, I got this error table 'xyz.wp_posts' doesn't exist. is there anyway to fix this on windows? Feel free to download db: www.degisimanaliz.com/xyzdb.tar.gz Very old backup: www.degisimanaliz.com/29_Ocak_Yedek_deganaliz.sql.gz

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• Echange Server 2003 Replication

  - by Campo

  We have 2 Exchange 2003 Servers. 1 is the master and is currently hosting all the mailboxes and public stores. I would like to setup a standby exchange server that is replicating all the mailboxes and public stores from the primary exchange server. This way if the primary goes down we can default to the standby. I have searched all over for some guidance but have not been able to find anything detailing this for Exchange 2003. Any help is much appreciated.

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• How can I make it difficult to install a new operating system on a certain computer?

  - by D W

  I want to host a website on a desktop computer running Ubuntu with a Windows virtual machine. I will give away the computer in exchange for a number of months of remote web hosting. I want to add some kind of lock (hardware or otherwise) so that the end users will have difficulty just reinstalling Windows and using the machine as they want, in contradiction to the contract. Ideally, I'd want the machine to die if reinstallation of the OS is attempted. It doesn't have to be completely insurmountable, but it has to be difficult enough to prevent casual reinstallation. Perhaps on bootup the system can check whether certain files exist on the computer and refuse to boot if they do not. I don't know if this is possible, but maybe BIOS is password protected, and searches for files before boot up. The files it looks for could be date sensitive, i.e. require remote replacement on a schedule.

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• monitor network bandwidth via ssh

  - by ServerSideX

  I'm running a Centos 6.4 server with cPanel. WHM (admin side panel) shows about 100GB of bandwidth this month. However, the server's RTG shows 3.4TB last 30 days, 121GB past 24 hours alone. Doesn't make sense. I'm trying to trace the cause of this. It's a shared web hosting server for approximately 300 domains. I would appreciate help tracing this down somehow. I utilize CSF firewall and Configserver exploit scanner as well. Day http://s10.postimg.org/ti1qhj5mx/day.png Week http://s7.postimg.org/8ho8kds57/week.png

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• ubuntu 12.04 copy whole server

  - by Jiechao Li

  all. My company host all the software, including application and website in one local ubuntu server. But recently we start to use Amazon EC2, and want to move the whole server to cloud. Is there anyway to copy the entire server to EC2? OS is the same, ubuntu 12.04, and just one server, and one user account. On EC2 is also one instance, one account. I don't know whether there is a simple and quick way to do that. Thanks a lot!!

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• Data transfer to my own computer from a website host by the same computer

  - by gunbuster363

  Hi all, I have a question about using a web site host in my computer, say Computer A, using any web server hosting application e.g : apache. I connect to my website in my very same computer A, and request to download a file of size 1Mb, in otherwords, I am connecting to my own computer and want to download a file in my computer. In addition, my internet access is bound by a proxy server in a way of gateway. The questions are - does the file transfer really exist? Or is it a local file copying between 2 location? Will my data packet go through the proxy, to the internet, and go back to the proxy and return to me? Thanks everyone who are watching this question.

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• Accessing A Shared Directory That Has An Account White List

  - by Xan

  I'm on a LAN here at work and I have my desktop sharing some of my project folders. I can access the computer via \\ComputerIP\, but I can't actually open any of the folders. Upon attempting, I get the error: Windowns cannot access \ComputerIP\ProjectFolder You do not have permission to access \ComputerIP\ProjectFolder. Contact your network administrator to request access. For more information about permissions, see Windows Help and Support Now, this is understood considering I've made it so that you had to utilize the "Project" credentials to connect. I have a user account on my main computer hosting these shared folders that gives full access to the folders if you are this "Project" user. I can Remote Desktop the computer just fine from my laptop using either set of credentials. When I try to open these folders it doesn't give me the option to attempt to apply any credentials like it does when I remote desktop. How am I supposed to gain access to these folders?

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• Using FTP to update files on a server

  - by Neville

  I know the FTP username and password for a site we own and need to know how we can update some files on the server. It seems quite a small thing to do and I'd like to have a go at doing it myself. A few years ago a friendly local guy help set up a website for my wife's floristry business. The site has a "contact us" page, and messages are forwarded to our home email address. We've now just changed our home email, and so I now need to reset the forwarding function on the website. The helpful local guy seems to have moved away, or retired - there's no way I can find him now. I tried to get help on how to change the forwarding address from the hosting people, but they say they can't help me. How do I go about updating the pages on the site? A step-by-step guide on how to do it would be great.

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• Is it possible to rent an IP address to mask the server real IP address?

  - by net-girl

  A customer would like to lease an IP address and point it to a dedicated web server with the intention of "masking" the server's IP address so it would be difficult to tell where the site is hosted. I found a company that leases IP addresses here: http://www.webhostingtalk.com/showthread.php?t=1191688 Is this even possible? Can they rent an IP address from a 3rd party in order to hide the server's IP address? Update: My client will be hosting a government leaks site and is trying to become Raid-Proof similar to what the pirate bay did: http://torrentfreak.com/pirate-bay-moves-to-the-cloud-becomes-raid-proof-121017/ Only that I'm worried about using a reverse proxy because of the latency it could cause having the app servers hosted in one data center and the load balancer/reverse proxy in other and also having to pay twice for bandwidth.

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• DNS management for WHMCS / cPanel?

  - by RD.

  I currently have WHMCS (www.whmcs.com) that I use for the billing system for my hosting company. It integrates with cPanel and WHM. I want to be able to allow clients to: Change MX Records Change DNS info (CNAME, A Record etc) 1 can be done in cPanel. But 2 not. So my questions are: 1. Is there a program/application available that will give clients access to this? I.e. So they can change their DNS info? 2. How do other companies do it?

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• NFS failover WITHOUT DRBD?

  - by user439407

  So I am trying to set up a redundant NFS share in a cloud environment(all links internal, half gig links), and I am looking into using heartbeat for failover, but all the guides seem to be about combining DRBD and heartbeat to create a robust environment. If need be I can do that, but since my content is almost completely static, I would like to avoid the extra overhead and complexity of DRBD if possible, but still be able to fail over if one of the NFS servers fails. Is it possible to use heartbeat with NFS to achieve high-availability without using DRBD to copy the blocks? I am not married to NFSv4, so if NFSv3 over UDP is necessary, that won't be a problem(only a very small number of clients will be connecting to the share) Any comments are appreciated.

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• Why do I get "Permission denied (publickey)" when trying to SSH from local Ubuntu to a Amazon EC2 server?

  - by Vorleak Chy

  I have an instance of an application running in the cloud on Amazon EC2 instance, and I need to connect it from my local Ubuntu. It works fine on one of local ubuntu and also laptop. I got message "Permission denied (publickey)" when trying to access SSH to EC2 on another local Ubuntu. It's so strange to me. I'm thinking some sort of problems with security settings on the Amazon EC2 which has limited IPs access to one instance or certificate may need to regenerate. Does anyone know a solution?

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• Revision / backup software for folder?

  - by Gabriel

  I'm looking for a simple backup/revision software that will monitor a folder for new changes and make a backup of newly modified files? I have a folder with some text files, a few Word/Excel files and I'd like to keep backup files of them when they're modified. (It's no more than 50 mb). I'd like what Dropbox does but just locally (not to be stored on the cloud). Thank you. Edit: I'm on Windows XP. And I'm looking for a freeware app, if possible.

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• amazon ec2 pricing

  - by Pradyut Bhattacharya

  I m really confused. I was trying to buy hosting at amazon ec2. My site will not be having much of a traffic and i will be installing glassfish and mysql. Usage will be 1gb of ram and around less than 5gb of hardisk and same bandwidth. As mine is a startup, the number of hits per day would be less than 20hits per day, each hit having around 10mins time. How should i calculate the price on the ec2 calculator. Thanks

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• debian mysql server always down

  - by lokheart

  I am hosting a mysql server in a debian 6.0.4 server hosted in linode, the new data is frequently written into the mysql server using R, about 30-40 "write" per minute, about 7 hours a day, 5 days a week. Recently I found that the mysql server seem to down frequently, always give me error that mysql server cannot be connected through socket. I wonder if this is caused by my high demand to my mysql server, and if this can be solved. I am definitely a newbie in manage server. Please let me know if I need to provide additional information for this question in order to get it solved. Thanks.

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