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• What sources do spammers use to get email addresses?

  - by Andrew Grimm

  From what sources do email spammers get their addresses? Wikipedia mentions the following: Harvesting email addresses from publicly available sources. This includes web pages (web crawling), usenet posts, mailing list archives, DNS and WHOIS records Guessing email addresses (directory harvest attack) Asking people for their emails for one purpose, such as jokes of the day, and selling the email addresses elsewhere Getting access to people's address books (which Quechup utilized) Scanning an infected computer for email addresses. Are there any other techniques used? Are any of the techniques above now obsolete?

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• VirtualHosts Stopped Working

  - by Kevin C.

  I'm working on a website and have WAMP setup for local testing. Usually I set up virtual hosts using httpd-vhosts + the hosts file without a hitch. All of a sudden, my virtual hosts are no longer working. I know that it's pointing to Apache because I get a '403 Forbidden' error, but that's about it. All of my previously working virtual hosts no longer work as well. Anybody know what's going on? httpd-vhosts.conf <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot "C:\Documents and Settings\kevin\Desktop\websites\fusion" ServerName ebrochures ErrorLog "logs/your_own-error.log" CustomLog "logs/your_own-access.log" common <directory "C:\Documents and Settings\kevin\Desktop\websites\fusion"> Options Indexes FollowSymLinks AllowOverride all Order Deny,Allow Deny from all Allow from 127.0.0.1 </directory> hosts file: 127.0.0.1 fusion And yes, I am including the virtual hosts file in my httpd.conf file: # Virtual hosts Include conf/extra/httpd-vhosts.conf

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• Create restricted user on Debian server

  - by James Willson

  I want to create a user account for each of the key programs installed on my debian server. For example, for the following programs: Tomcat Nginx Supervisor PostgreSQL This seems to be recommended based on my reading online. However, I want to restrict these user accounts as much as possible, so that they dont have a shell login, dont have access to the other programs and are as limited as possible but still functional. Would anyone mind telling me how this could be achieved? My reading so far suggests this: echo "/usr/sbin/nologin" >> /etc/shells useradd -s /usr/sbin/nologin tomcat But I think there may be a more complete way of doing it. EDIT: I'm using debian squeeze

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• Need help connecting to NAS externally-port forwarding and DDNS newbie

  - by Joel

  Hi folks, I just picked up a synology NAS, and I'm loving it for internal use, but I want to be able to access the NAS externally-both from my iPhone (3G) and from the net. I have a Linksys WRT54G-TM router. My first question is whether I have set up the dyndns correctly. On my computer that is on my network, if I put in mydomain.dyndns.org, I am taken to a password popup and when I enter my router login and password, my router admin page opens up. On the same computer, I get the same results if I use my external IP address, and if I use my internal IP 192.168.0.1 So that is all as expected. However, when I go to my iphone and turn off wifi, and try to connect with 3g to the external IP or the dnydns domain, I just get an error "Safari could not open the page because the server stopped responding". What's up?

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• Solarwinds SDK/customisation

  - by Shane

  Hi, Sorry if this is the wrong place to post, but it is a hybrid serverfault/stackoverflow question. I've been directed to take a look at Solarwinds, which is an excellent network monitoring solution, for an internal project. Basically we want to write our own panel to display information custom to our network infrastructure. Has anyone done anything like this, or know if there is a plugin SDK giving developer access? [edit:] Also, if anyone knows of any other Solarwinds-type open source network solutions, please let me know. Cheers, Shane

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• Excel - export sheet to fixed-width text file?

  - by jkohlhepp

  I know that Excel has functionality to import fixed-width text files where it presents a dialog that lets you choose where the begins and ends of fields are which it puts into columns. Does it also have functionality where, given an existing spreadsheet, you can export to a fixed-width text file? If so, how do I access this? I have tried using Save As and choosing Text File but it seems to only save as Tab-delimited which doesn't help me. This is Excel 2003 if it matters. Thanks, ~ Justin

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• Windows Server 2003 Licensing

  - by Phil

  Hi all, I'm looking to get a Windows Server 2003 box in the middle of my linux network. :( I'm just concerned about CAL licensing for it. No devices will access any network server function of Windows Server 2003. I don't need Windows for DHCP or DNS or file and print sharing. I have linux boxes to do that! xD I just need a box running Windows (of some variety) to host those few apps that have to run on Windows like my AV management console. In short do I need any CALs for my server if its not acting as server itself. I think Windows Server 2003 comes with 5 CALs which can be per user for the admins to use RDP? Thanks, Phil

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• How do I create /Groups/ folder in Mac OS X

  - by fettereddingoskidney

  I am familiar with adding Groups with the GUI in MAC OS X, but I am trying to do it via SSH to a computer I remotely manage as a production server. I want to create / modify some of my users for a particular directory by creating a new group. In Another helpful serverfault post, I see that I need to add the users to the group name at /Groups/foo, however my system's Groups folder does not exist... Does Mac OS X create the Groups directory only when you actually create the group – if there do not already exist any groups on the Machine? Is this something that I can do simply using: mkdir "Groups" Or maybe I'm wrong altogether. Any pointers for how to go about this with Unix? – I should note also that this group will be used to manage the access to a directory on my server via an .htaccess file. Thanks!

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• Do I have an efficient APC Setup?

  - by Gaia

  Regarding my particular APC setup: APC 3.1.9 PHP 5.3.3 via fCGI Apache 2.2.15 CentOS 6.3 1) Is it setup properly to minimize overall memory usage? /etc/php.d/apc.ini has only one line: "apc.cache_by_default=0" Each domain for which I want to turn on APC has all the apropriate APC configurations in its own php.ini. 2) I would like to keep only one copy of apc.php that can be accessed via any of the vhosts on the server. What's the recommended way to do this? It seems that apc.php doesn't play well with apache Alias directive. apc.php only exists is on one of the vhosts, is set to 644 and it doesn't seem to matter who owns it: if I try to access it via an alias I get only gibberish.

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• Gateway time out connecting to tethered server from Android

  - by BentFX

  I've got an Android device running android-wifi-tether. It works as advertised. I connect to it from my Ubuntu 12.04 laptop running Apache 2.2.22. The laptop is manually configured to IP 192.168.2.100 in the hosts file. It can ping itself and access it's own web server through that address. The WiFi tether hotspot gives the laptop the same 192.168.2.100 address(Laptop was configured to match the hotspot address as a troubleshooting step, and could be wrong.) Using ping I can ping the laptop from the phone using the 192.168.2.100 address. Using portscan the phone shows port 80 open on the 192.168.2.100 address. So, everything looks like it's in place, but any attempt to browse to http://192.168.2.100 fails after a few moments with a 504(Gateway time out) Any help would certainly be help.

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• Set up iis7.5 to deny connections outside of LAN for certain folder

  - by Darkcat Studios

  Im setting up a combined website and extranet currently, they both read from the same database on the same server as the site is hosted on. The reason being that the website is fed from the data that the staff plug into the extranet interface. it also links in to AD for authorising access to the extranet. I have the extranet in a folder within the website folder. What I want to do is only allow the extranet to be accessed from computers within our LAN, but allow the main website to be freely accessible to internet users. I have it set up as a generic web server currently, so anyone can view anything (well up to the point where the user is asked to log into the extranet of course! I have read a lot on this but nothing I read applies to, or works in IIS7.5

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• Using apache reverse proxy for Domino inotes 8.5

  - by Haider

  I have setup access for the users to their mailfiles on Domino 8.5.1 using Inotes. The reverse proxy in use is Apache. It works fine. This is the current configuration i am using. Virtual host is commented out. The user types e.f.g.h and is being pointed to a.b.c.d and this works correctly without using virtual host. How would i implement this using Virtual Host # <VirtualHost ServerName ??? ProxyRequests off ProxyPass / `http://a.b.c.d/ ProxyPassReverse / `http://a.b.c.d/ ProxyPreserveHost On <Location / ProxyHTMLEnable On ProxyHTMLURLMap / / RequestHeader unset Accept-Encoding </Location </VirtualHost

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• How do I turn a router into a wireless bridge

  - by Rob Cowell

  I'm trying to get my HD satellite receiver connected to the internet - it has an Ethernet port on the back but my networking equipment is all upstairs. I had the idea of connecting a spare wireless router to the box with an ethernet cable and getting that wireless router to talk to my "main" wireless router (the one with the ADSL connection) to supply internet access. I believe this entails getting the router to work as a "wireless bridge", but I don't know how to do this. Currently, the ADSL line is hooked up to a NETGEAR DG834G. The other two "spare" wireless routers I have to act as the bridge are :- Huawei HG520b Netgear DGN2000 BT Homehub I'd prefer not to change the "main" router (cos I'm used to its web admin UI) - does anyone know a way I can achieve the connectivity I require with the equipment I have?

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• How do I turn a router into a wireless bridge

  - by Rob Cowell

  I'm trying to get my HD satellite receiver connected to the internet - it has an Ethernet port on the back but my networking equipment is all upstairs. I had the idea of connecting a spare wireless router to the box with an ethernet cable and getting that wireless router to talk to my "main" wireless router (the one with the ADSL connection) to supply internet access. I believe this entails getting the router to work as a "wireless bridge", but I don't know how to do this. Currently, the ADSL line is hooked up to a NETGEAR DG834G. The other two "spare" wireless routers I have to act as the bridge are :- Huawei HG520b Netgear DGN2000 BT Homehub I'd prefer not to change the "main" router (cos I'm used to its web admin UI) - does anyone know a way I can achieve the connectivity I require with the equipment I have?

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• IPv6 local address in hosts file

  - by Dan

  I have set up a local domain on my Apache server. Then I added the following line in my /etc/hosts file ::1 exampledomain.local After I trying to navigate to it, (I tried Firefox and Chromium) I got a server not found error. Then I tried ping6 and it worked: dan@danny:~$ ping6 exampledomain.local PING exampledomain.local(exampledomain.local) 56 data bytes 64 bytes from exampledomain.local: icmp_seq=1 ttl=64 time=0.032 ms If I replace ::1 with 127.0.0.1 in my hosts file, it works fine. I'm not sure if this is relevant but this is my Virtual Host configuration in Apache2: <VirtualHost *:80> ServerAlias exampledomain.local DocumentRoot /home/dan/sites/exampledomain <Directory /home/dan/sites/exampledomain> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/exampledomain-error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel debug CustomLog ${APACHE_LOG_DIR}/exampledomain-access.log combined </VirtualHost> My question is: How can I make it work with the IPv6 address?

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• Driverless printer sharing on Windows.

  - by MiffTheFox

  I have a printer hooked up to a computer running Windows XP. It prints fine from that computer, but I'd like to set up other computers (running Vista and 7) to print from it as well. I tried setting up printer sharing, but it wouldn't work because the client computers needed to install the print driver as well. (The driver itself has been discontinued and there's no version for Vista or 7.) Is there some (hopefully free) software I can install to, say, add a virtual printer that sends the data to a host computer to print it, rather then having to directly access the printer over the network via the Windows printer sharing model?

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• Remove Downed Exchange Server from First Administrative Group

  - by Campo

  I had a server die. It is gone forever. It is still listed in the servers folder of the first administrative group in the Exchange System Manager. When I click "all tasks Remove Server" I get the following error: The Server "SERVERNAME" cannot be removed because: -One or more users currently use a mailbox on this server. These users must be moved to a mailbox store on a different server or be mail disabled before uninstalling this server. Facility: Exchange System Manager ID no: c103f492 Exchange System Manager Any help would be MUCH appreciated. I cannot access the mailbox stores anymore and I do not care about the lost mailboxes. We deleted the inactive and old users as well. So I am stumped on this one. I just need to remove the old machine. THANKS!

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• .htaccess to block by file name possible?

  - by Tiffany Walker

  I have a bunch of files that are secure_xxxxxx.php. Is there a way to use .htaccess to block access to all the secure_* php files based on IP? EDIT: I've tried but I get 500 errors <FilesMatch "^secure_.*\.php$"> order deny all deny from all allow from my ip here </FilesMatch> Don't see any errors in apache error logs either httpd -M Loaded Modules: core_module (static) authn_file_module (static) authn_default_module (static) authz_host_module (static) authz_groupfile_module (static) authz_user_module (static) authz_default_module (static) auth_basic_module (static) include_module (static) filter_module (static) log_config_module (static) logio_module (static) env_module (static) expires_module (static) headers_module (static) setenvif_module (static) version_module (static) proxy_module (static) proxy_connect_module (static) proxy_ftp_module (static) proxy_http_module (static) proxy_scgi_module (static) proxy_ajp_module (static) proxy_balancer_module (static) ssl_module (static) mpm_prefork_module (static) http_module (static) mime_module (static) dav_module (static) status_module (static) autoindex_module (static) asis_module (static) info_module (static) suexec_module (static) cgi_module (static) dav_fs_module (static) negotiation_module (static) dir_module (static) actions_module (static) userdir_module (static) alias_module (static) rewrite_module (static) so_module (static) fastinclude_module (shared) auth_passthrough_module (shared) bwlimited_module (shared) frontpage_module (shared) suphp_module (shared) Syntax OK

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• Cannot install Office 2003 Professional on a machine which formerly had 2003 Basic

  - by Paul

  Hi to all, I have a problem with one of our PCs. I've inherited this PC and it's always had MS Office basic on it; the time has come to install our Access application on it, so I'm trying to install Office Professional 2003, the problem I have is the installer says the license key is invalid; I can only assume this is down to the fact that the PC used to have Office Basic installed. I've deleted the registration keys for the OFFICE11 section of the registry, but am still getting the problem... Any suggestions as to how to kill any trace of the old install would be appreciated - its' no longer showing up in the add/remove programs window.

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• Build NAS for Windows and Linux network

  - by modernzombie

  I have a spare PC and I would like to setup a NAS that is accessible from Windows and Linux. I would like to avoid using Windows as an OS and would like something like Ubuntu or FreeNAS. My only concern is I don't want to have to install special software on each client. Is there a way to use Ubuntu or FreeNAS and have Windows machines access the files with installing a client on each Windows box? UPDATE Thanks for the answers. I wish I could choose more than one. I will give FreeNAS a try and see how it goes. Thanks!

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• PHP throwing XDebug errors ONLY in command line mode...

  - by Wilhelm Murdoch

  Hey, all! I've been having a few problems running PHP-based utilities within the command line ever since I enabled the XDebug. It runs just fine when executing script through a browser, but once I try an execute a script on the command line, it throws the following errors: h:\www\test>@php test.php PHP Warning: PHP Startup: Unable to load dynamic library 'E:\development\xampplite\php\ext\php_curl.dll' - The specified module could not be found in Unknown on line 0 PHP Warning: Xdebug MUST be loaded as a Zend extension in Unknown on line 0 h:\www\test> The script runs just fine after this, but it's something I can't seem to wrap my head around. Could it be a path issue within my php.ini config? I'm not sure if that's the case considering it throws the same error no matter where I access the @php environmental variable. Also, all paths within my php.ini are absolute. Not really sure what's going on here. Any ideas? Thanks!

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• SQL Server 2005 to 2008 upgrade - are MDF files binary compatible?

  - by james

  I have 50 databases on a MS SQL Server 2005 system and want to upgrade to MS SQL Server 2008. This is what I tried on some test machines: 1. copied the \DATA directory from the source (MSSQL 2005) to exactly the same path on the target (MSSQL 2008) server. 2. edited the startup parameters on the MSSQL 2008 service to point to the path of the MSSQL 2005 master database. 3. restarted MSSQL service It worked and I can access all databases, tables and data. My questions are: I go back to SQL Server 4.2 and it has never been this easy. I know it worked, but should have it worked? Am I missing something, or is there going to be a gotcha next week? These are simple databases, with just tables, views and indexes. No cross database links, no triggers etc

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• vista server 2008 web edition cant change permissions

  - by minus4

  hi there, Im used to using windows server 2003 but decided to get a Vista web edition for IIS7 and to run our MVC applications on. I have installed copSSH that i use for SFTP, and when i upload my files i am unable to change persmissions or take ownership or anything when logged in as an administrator. when i try to go to permissions i get: The permissions on uploads are incorrectly ordered, which may cause some entries to be ineffective. and all permissions are the grayed out. i have tried to use icacls to reset ownership and also tried to give myself full control through icacls however all attempts are met with a access is denied message and failed processing 669 files. all i wish to do is set up write and delete permissions on an upload folder for a CMS systems admin area, but i am a week into looking into this and i am still no wiser. Please could someone give some sound advice so i can get this running smooth thanks p.s i have added the copSSH notes as i think that when i SFTP the files to the server, this may somehow have some involvement in messing up permissions

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• Error "fileid changed" when accessing files over NFS

  - by Roman Prikhodchenko

  I have an nfs-kernel-server configured and running on Ubuntu 10.04 Server. /export THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) /export/ebs THIRD_SERVER_IP(rw,fsid=0,insecure,no_subtree_check,async) SECOND_SERVER_IP(rw,nohide,insecure,no_subtree_check,async) I mounted the exported folder to the second server: mount -t nfs4 -o proto=tcp,port=2049 NFS_SERVER_IP_HERE:/ebs /ebs and it works just fine. I mounted it to the third server but I cannot access files from it. ls -l /ebs ls: reading directory /ebs: Stale NFS file handle total 0 The syslog on the third server says: kernel: [11575.483720] NFS: server NFS_SERVER_IP_HERE error: fileid changed kernel: [11575.483722] fsid 0:14: expected fileid 0x2, got 0x6e001 Some info: uname -r 2.6.32-312-ec2 uname -m i686

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• Installing an EC2 (EBS based) instance on another AWS account

  - by imaginative

  We're moving from one AWS account to another. I have a couple of EC2 instances I would like to move over. These instances are EBS based. Googling around, I'm seeing all sorts of convoluted answers for how to appropriately launch this EBS based instance on a new account. Surely there has to be a simple way of going about this. As of right now, what I have done so far is backup the EB2 Volume as a snapshot. I then altered the permissions of the snapshot to allow the new AWS account number to be able to access it. I am not sure where to go from here. Do I have to create an image from the EBS snapshot? Upload it to S3? What's the next step(s)?

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