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  • Unable to set initcwnd on a Hetzner server

    - by Sergi
    We just ordered a bunch of Hetzner EX40SSD servers with the minimal Debian install image that they provide and everything is just fine except that looking at tcpdumps for fine tuning the network from various locations the initcwnd param seems to be stuck at 6 no matter how we change it. By default Debian 3.2 kernels should have that setting to 10 so it's pretty strange. Is it possible that the NIC driver or a custom setting in the Hetzner Debian image is limiting this param? Even if we set it to 4, like the old kernel default, it doesn't work. Any ideas would be much appreciated! Does anyone know if the NIC drivers provided by default by Debian have some kind on limitation. In a long thread in http://www.webhostingtalk.com/showthread.php?t=1200617&highlight=hetzner they talk about a page http://wiki.hetzner.de/index.php/Installation_des_r8168-Treibers/en where Hetzner states that the included Realtek r8168 driver is not working properly, but nowhere do they say that the initcwnd could be affected. Tomorrow i will try to install a CentOs image and see if Debian is the problem...Last resort would be to install a custom debian image, but that is a pain in the ass! Thanks!

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  • Linux web server shared hosting file errors

    - by dfilkovi
    I'm using a shared hosting to host my website and have some problems with files from time to time. First, one of my file (php) was missing a part of code (nothing to do with hackers just a random piece of code was missing), then after some time a value inside a mysql table was also missing a part, then a whole table column disappeared, after that a whole file on my site disappeared and lastly again some code from a file disappeared, my hosting service says it has nothing to do with them, but this is stupid, how can this happen, no hacker attack could do such a thing, I believe it's some kind of a disk corruption or bad backup. Anyone have any ideas?

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  • Two-Hop SSH connection with two separate public keys

    - by yigit
    We have the following ssh hop setup: localhost -> hub -> server hubuser@hub accepts the public key for localuser@localhost. serveruser@server accepts the public key for hubuser@hub. So we are issuing ssh -t hubuser@hub ssh serveruser@server for connecting to server. The problem with this setup is we can not scp directly to the server. I tried creating .ssh/config file like this: Host server user serveruser port 22 hostname server ProxyCommand ssh -q hubuser@hub 'nc %h %p' But I am not able to connect (yigit is localuser): $ ssh serveruser@server -v OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012 debug1: Reading configuration data /home/yigit/.ssh/config debug1: /home/yigit/.ssh/config line 19: Applying options for server debug1: Reading configuration data /etc/ssh/ssh_config debug1: Executing proxy command: exec ssh -q hubuser@hub 'nc server 22' debug1: permanently_drop_suid: 1000 debug1: identity file /home/yigit/.ssh/id_rsa type 1000 debug1: identity file /home/yigit/.ssh/id_rsa-cert type -1 debug1: identity file /home/yigit/.ssh/id_dsa type -1 debug1: identity file /home/yigit/.ssh/id_dsa-cert type -1 debug1: identity file /home/yigit/.ssh/id_ecdsa type -1 debug1: identity file /home/yigit/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1 debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1 pat OpenSSH_5* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: sending SSH2_MSG_KEX_ECDH_INIT debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ECDSA cb:ee:1f:78:82:1e:b4:39:c6:67:6f:4d:b4:01:f2:9f debug1: Host 'server' is known and matches the ECDSA host key. debug1: Found key in /home/yigit/.ssh/known_hosts:33 debug1: ssh_ecdsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /home/yigit/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /home/yigit/.ssh/id_dsa debug1: Trying private key: /home/yigit/.ssh/id_ecdsa debug1: No more authentication methods to try. Permission denied (publickey). Notice that it is trying to use the public key localuser@localhost for authenticating on server and fails since it is not the right one. Is it possible to modify the ProxyCommand so that the key for hubuser@hub is used for authenticating on server?

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  • Utility Objects–Waitfor Delay Coordinator (SQL Server 2008+)

    - by drsql
    Finally… took longer than I had expected when I wrote this a while back, but I had to move my website and get DNS moved before I could post code… When I write code, I do my best to test that code in as many ways as necessary. One of the last types of tests that is necessary is concurrency testing. Concurrency testing is one of the most difficult types of testing because it takes running multiple processes simultaneously and making sure that you get the correct answers multiple times. This is really...(read more)

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  • Host website without domain name?

    - by Frost Shadow
    I have an old desktop sitting around I wanted to try making a server out of, but I don't want to pay to register a Domain Name. Is there a way I can host a website without a domain name, or to register a domain name for free? If I can't host a web page without a domain name, can I just access the files on the server through the internet some how without a domain name? Thanks for any insight!

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  • XP box with 3 NICs on Server 2003 Domain

    - by Hannibal
    I have assigned all three NICs IP addresses that are outside the DHCP pool. I have 2 NICs are connected to 1 switch and the 3rd to my second switch. I want to assign one of the two NICs on the 1st switch to "normal" network activity (e.g. internet access, RDP, etc.) The other two NICs I want to reserve for mirroring ports on their respective switches. While this machine is connected to the domain I can access the internet and Remote Desktop. I have no idea which NIC I am using until I start mirroring a port, at which time, if I happen to be connected through one of the NICs I have dedicated to mirroring, I lose my remote desktop. I am aware that I would have more control over the NICs using Linux. I want to explore Windows solutions before I go that route because reinstalling another OS would be inconvenient (but not impossible). I would likely use a version of Backtrack (3 or 4 not sure). I would also have to learn how to access the machine remotely but I've done it before so this would be a minor obstacle. Thank you for your assistance.

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  • Oracle's Linux Server Slant

    OS Roundup: Is Oracle closing the door on OpenSolaris in favor of Linux servers? Recent actions, imply the company is determined to drive potential customers away from the UNIX offerings it acquired from Sun and into the arms of Red Hat and other enterprise Linux vendors.

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  • Oracle's Linux Server Slant

    OS Roundup: Is Oracle closing the door on OpenSolaris in favor of Linux servers? Recent actions, imply the company is determined to drive potential customers away from the UNIX offerings it acquired from Sun and into the arms of Red Hat and other enterprise Linux vendors.

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  • Random Server shutdown? - CentOS

    - by Kevin Hammett
    My system was working fine, and then it just had a random restart. Anyone have any idea of the problem? The message log: Jul 6 22:56:34 909I7 shutdown[719711]: shutting down for system halt Jul 6 22:56:34 909I7 init: Switching to runlevel: 0 Jul 6 22:56:35 909I7 smartd[10743]: smartd received signal 15: Terminated Jul 6 22:56:35 909I7 smartd[10743]: smartd is exiting (exit status 0) Jul 6 22:56:42 909I7 hcid[8749]: Got disconnected from the system message bus Jul 6 22:56:42 909I7 auditd[8430]: The audit daemon is exiting. Jul 6 22:56:42 909I7 kernel: audit(1341640602.922:344412): audit_pid=0 old=8430 by auid$ Jul 6 22:56:43 909I7 pcscd: pcscdaemon.c:572:signal_trap() Preparing for suicide Jul 6 22:56:43 909I7 pcscd: hotplug_libusb.c:376:HPRescanUsbBus() Hotplug stopped Jul 6 22:56:44 909I7 pcscd: readerfactory.c:1379:RFCleanupReaders() entering cleaning f$ Jul 6 22:56:44 909I7 pcscd: pcscdaemon.c:532:at_exit() cleaning /var/run Jul 6 22:56:44 909I7 kernel: Kernel logging (proc) stopped. Jul 6 22:56:44 909I7 kernel: Kernel log daemon terminating. Jul 6 22:56:45 909I7 exiting on signal 15

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  • Free or very Cheap VPN server software with high concurrent users count

    - by Martin KS
    I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less costly option on a per-concurrent-user basis. I've no need for particularly strong security, and my only other requirement is that I would need to be able to add users in bulk via csv or similar. Does anyone have any suggestions?

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  • Redundant APC UPS units, single server set up

    - by Sholom
    Hi All We have a very simple set up, looking for a very simple (reliable) solution: Setup: One Dell box with redundant power supplies running Windows 2003, plugged into two separate APC SmartUPS 1500 units (USB, no smart cards) on two separate circuits. Solution required: IF (UPS1 = Low) AND (UPS2 = Low) THEN: Shutdown gracefully ELSE: DO NOTHING!! APCUPSD only allowes for one instance (and therefore one UPS) in a windows environment. PowerChute can't do this without using APC Smart Cards which means utilizing our switch, but the switch does not have redundant power supplies, so it will only live for as long as one of the two UPS units. And no, i don't have the budget to buy two smart cards pluse a switch with redundancy ;) Thanks

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  • SQL Server 2008 R2: StreamInsight changes at RTM: Event Flow Debugger and Management Interface Secur

    - by Greg Low
    In CTP3, I found setting up the StreamInsight Event Flow Debugger fairly easy. For RTM, a number of security changes were made. First config: To be able to connect to the management interface, your user must be added to the Performance Log Users group. After you make this change, you must log off and log back on as the token is only added to your login token when you log on. I forgot this and spent ages trying to work out why I couldn't connect. Second config: You need to reserve the URL that the...(read more)

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  • How to have internet connection over VPN while "Microsoft Firewall Client for ISA server" is running

    - by blocked
    I have the software mentioned in the title running on my machine. When I connect over VPN to my company's network, my internet connection gets borked, because somehow the ISA firewall blocks it. This is completely idiotic, because my work involves extensive use of the internet, so having to disconnect and reconnect continuously seriously cripples my productivity. (Meaning: I'm tearing my hair out here.) Can I have my VPN connection and somehow still have my internet connection too? I'm open to any solution.

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  • DirectAdmin Centos4 server has virus

    - by Rogier21
    Hello all, I have a problem with a webserver that runs Centos4 with DirectAdmin. Since a few weeks some websites hosted on it are not redirecting on search engines properly, they are redirected to some malware site, resulting in a ban from google. Now I have used 3 virusscanners: ClamAV: Didn't find anything Bitdefender: Found a 2-3 files with JS infection, deleted them AVG: Finds lots of files, but doesn't have the option to clean! The virus that it finds is: JS/Redir JS/Dropper Still the strange thing is: website a (www.aa.com) does not have any infected files (have gone through all the files manually, is a custom PHP app, nothing special) but does still have the same virus. Website b (www.bb.com) does have the infected files as only one. I deleted all these files and suspended the account, but no luck, still the same error. I do get the log entries on the website from the searchengines so the DNS entries are not changed. But now I have gone through the httpd files but cannot find anything. Where can I start looking for this?

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  • Server monitoring for medium scale UNIX network

    - by nbartolomeo
    I'm looking for suggestions for a good monitoring tools, or tools, to handle a mixed Linux (RedHat 4-5) and HPUX environment. Currently we are using Hobbit which is working reasonably well but it is becoming harder to keep track of what alerts are sent out for what servers. Features I'd like to see: Easy configuration of servers. The ability to monitor CPU, network, memory, and specific processes I've looked into Nagios but from what I have seen it won't be easy to set up the configuration for all of our servers ~200 and that without installing a plugin into each agent I won't be able to monitor processes.

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  • Switch to another CPanel server, restore mailbox, how to stop Outlook POP3 pull mail data again.

    - by Shiro
    Hi, We switch from a linux CPanel server to another CPanel server, all the setting and file is restore back to the new Linux CPanel server. E.g [email protected] , inside the server I got 100mails. It had been downloaded to my Outlook, my outlook also got 100 mails inside. After I switch to new server, the 100 mail in the old server had been transfer to new server. However, when I open my Outlook, it start to download the 100 mails again, that means I got 200 mails in my mailbox and it is duplicated. How can I stop Outlook to download. The time stamp, receiver and sender is exactly the same. We want to keep a backup in the server, because we don't have a physical server to keep the mail. That why we would like to transfer the mailbox to the new server. Anyone have solution to stop Outlook download again?

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  • Bind dns server in Solaris 10 and win xp clients

    - by stevecomptech
    Hi, Added this in zone db file, I am running solaris 10 _ldap._tcp.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.mydomain.com. SRV 0 0 88 dc.mydomain.com. _ldap._tcp.dc._msdcs.mydomain.com. SRV 0 0 389 dc.mydomain.com. _kerberos._tcp.dc._msdcs.mydomain.com. SRV 0 0 88 host.mydomain.com. Now I get this error when I try to join win xp to the domain The query was for the SRV record for _ldap._tcp.dc._msdcs.mydomain.com The following domain controllers were identified by the query: host.mydomain.com Common causes of this error include: Host (A) records that map the name of the domain controller to its IP addresses are missing or contain incorrect addresses. Domain controllers registered in DNS are not connected to the network or are not running. What do I need to change in order my win xp join the domain

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  • SQL SERVER Difference Between GETDATE and SYSDATETIME

    Sometime something so simple skips our mind. I never knew the difference between GETDATE and SYSDATETIME. I just ran simple query as following and realized the difference. SELECT GETDATE() fn_GetDate, SYSDATETIME() fn_SysDateTime In case of GETDATE the precision is till miliseconds and in case of SYSDATETIME the precision is till nanoseconds. Now the questions is [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Javascript Event in Innerhtml Resulting from PHP Server Script

    - by user144527
    I'm (very slowly) making a website, and I'm creating a search engine for the database, which is essential to organize the dependencies during data entry. Anyway, what I would like is to type a few keywords into a box, have a menu pop up with various search results, and have the box fill with the ID number of the selected entry when it's clicked. Currently, I have a document called search.php which fills a div called search-output using xmlhttp.open() and the innerhtml property. Everything is working perfectly except for filling the original search box with the ID number when clicking. My first attempt was to add an onclick event to each entry in the output from search.php. Unfortunately, I found that javascript inserted into innerhtml is not run for security reasons. I've been Googling for hours but haven't been able to find a solution. How can I get the original search text box to fill with the correct ID when I click it? Is what I'm doing a good setup for the results I desire, or is there a better way to integrate search features into data entry?

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  • memtest86+ crashing on server

    - by user148723
    we have a few DELL 1950 servers. 1 of this servers has CentOS6.3 and its randomly rebooting so I suspected it was hardware. (no log generated) the other 4 servers do not randomly reboot. We passed memtest86+ on the 5 servers, and on 3 of them memtest86+ crashes (displaying an odd and colorful screen, like if a video card failed) Although I tested old memtest86 (not +), and all servers did not crash. I also tested other RAM testers utilities, no tool failing. have any of you guys experience this? thanks

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  • Permissions issue: how can Apache access files in my Home directory?

    - by richzilla
    I know file permissions have been covered on here before, but im struggling to get my head around the concept for my scenario. I created the files on an old ubuntu installation. Ive copied the files into my new ubuntu installation and put them in my webroot. When i attempt to run the files (theyre PHP files) i get an error relating to permissions in an attempt to fix this, i assumed that they must still be owned by the previous owner, so i ran chown -R on the directory, with my username as an argument, in order to take ownership of all of the files in the directory. It should be noted that the usernames between new and old ubuntu installations were the same. When i attempt to run the files again, same problem: 500 error due to permissions problems. Can anyone tell me what other steps i should take? The webroot for my apache installation is inside my home folder. If i create new files in my webroot, they also work as expected, its only the old files that are causing the problem.

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