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• Protecting Windows SMTP service against the spam

  - by MainMa

  Hi, I'm trying to use a Windows SMTP service on Windows Server 2008, but I can't understand how to secure it. Basically, if I open firewall for local network IPs only for %windir%\system32\inetsrv\inetinfo.exe and keep Connection and Relay settings of SMTP Virtual Server to "All except the list below" (with an empty list), a few minutes later I see spam appearing in Queue directory. (Why? Isn't firewall intended to block this?) Now, if I set Connection or Relay to "Only the list below", specifying the range of local IPs, I can't use the SMTP server nevermore (a "Unable to read data from the transport connection: net_io_connectionclosed." exception is thrown). So what is the way to get rid of spam from internet but let send mails from local network?

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• Nginx rewrite with Simple Machines Forum

  - by Kevin Worthington

  I am running Nginx 1.5.6 and I use the Simple Machines Forum software. Most rewrite rules seem to work properly, with the exception of the RSS feeds. In my Nginx configuration, I have the following line which is supposed to handle URLs which contain ".xml": rewrite ^/forum/(\.xml|xmlhttp)/?$ "/forum/index.php?pretty;action=$1" last; The above rule produces the following URL for the main forum, which returns a 403 Error: http://www.mydomain.com/forum/.xml/?type=rss I would like the rewrite rule to produce this type of URL, which returns code 200 (a real page): http://www.mydomain.com/forum/?type=rss;action=.xml Here is the entire block pertaining to the forum rewrites: http://pastebin.com/raw.php?i=tZkAibW3 I would really appreciate some help to create a rewrite rule to do that. Thanks.

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• Import PDF in Inkscape without per character spacing

  - by Morinar

  I have a PDF form I imported into Inkscape. It did a pretty great job of created an SVG from it, however it appears to have given per character x coordinates to each tspan in every text block. I'm not sure, but I think this is making the FOP render that our software does ridiculously slow (running it through other renderers like IBEX it seems fine). I'd like to import it but have it not do per character positions. I can't seem to find any sort of PDF importing options at all. Does such a thing exist? Or is there perhaps some other, better freeware application I could use to generate the SVG from the PDF then use Inkscape to do adjustments from there? Thanks in advance.

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• Cant remove/delete symlink

  - by user477519

  I have tried to create a symlink and it threw this error: ln: accessing `.test': Permission denied Now I can't unlink or delete the symlink file. Tried Googling for help but could not find a solution. Please find the results of following commands. stat .test : File: `.test'stat: cannot read symbolic link `.test': Permission denied Size: 26 Blocks: 0 IO Block: 16384 symbolic link Device: 1fh/31d Inode: 312075453 Links: 1 Access: (0777/lrwxrwxrwx) Uid: (11160/ chatt) Gid: (11307/ pgr) Access: 2012-11-12 11:36:51.167327500 +0000 Modify: 2012-11-12 11:36:51.163331700 +0000 Change: 2012-11-12 11:36:51.163331700 +0000 Birth: - chattr -i .test: chattr: Permission denied while trying to stat .test lsatter .test lsattr: Operation not supported While reading flags on .test Any help would be appreciated. Thanks

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• Indentation-based Folding for TextMate

  - by Craig Walker

  SASS and HAML have indentation-based syntax, much like Python. Blocks of related code have the same number of spaces at the start of a line. Here's some example code: #drawer height: 100% color: #c2c7c4 font: size: 10px .slider overflow: hidden height: 100% .edge background: url('/images/foo') repeat-y .tab margin-top = !drawer_top width: 56px height: 161px display: block I'm using phuibonhoa's SASS bundle, and I'd like to enhance it so that the various sections can fold. For instance, I'd like to fold everything under #drawer, everything under .slider, everything under .edge, etc. The bundle currently includes the following folding code: foldingStartMarker = '/\*|^#|^\*|^\b|^\.'; foldingStopMarker = '\*/|^\s*$'; How can I enhance this to fold similarly-indented blocks?

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• Unmounted root partition

  - by Jack

  My server running Debian lenny has just had a power cut recently and its come back up with the root partition in read only mode. I tried to remount the filesystem in read write mode with mount -n -o remount,rw / which then gave the output mount: block device /dev/hda1 is write-protected, mounting read-only. But now the root filesystem isn't mounted at all so I can't run anything to mount the partition again or any other command for that matter such as shutdown because /bin/ isn't there. Is there anything I can do remotely?

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• Photoshop / Illustrator Fill text box with large string.

  - by Xetius

  I have a massive string (lots of Fibonacci numbers concatenated together). I don't know how much of this text I need to fill an A4 page. What I was hoping for was to paste a large block into a text box and have it display as much as possible, wrapping the text at the end of a line, but it is not doing that. It is just displaying a blank box (With the text overflowing into an awaiting textbox or something. I have tried pasting smaller amounts of text into the text box, and it appears that it will get about half way and then go into 'blank' mode. All I need is a simple way of creating a background of numbers which I don't have to type in. Any ideas?

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• Advice on new hardware firewall for a small company server-environment

  - by Mestika

  Hi everyone, My companies currently hardware firewall (an old ZyXEL ZyWALL firewall) and is indeed requiring an update to a new firewall. It is a small company with a similar small server-environment, so the need for a huge, complex and expensive solution isn’t there but a more “straight-forward” firewall, that can provide the necessary security to our systems and block unwanted elements from the core server and only accept access through our one server which is used as an “gateway” between the Internet and our internal network. I haven’t that much experience with hardware firewalls so I’m requesting any good advice and/or knowledge on which products will be suited for our specific need. If you need more information about the specific needs we require, please let me know and I’ll provide them to you. Sincerely - Mestika

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• The canonical "blocking BitTorrent" question

  - by Aphex5

  How can one block, or severely slow down, BitTorrent and similar peer-to-peer (P2P) services on one's small home/office network? In searching Server Fault I wasn't able to find a question that served as a rallying point for the best technical ideas on this. The existing questions are all about specific situations, and the dominant answers are social/legal in nature. Those are valid approaches, but a purely technical discussion would be useful to a lot of people, I suspect. Let's assume that you don't have access to the machines on the network. With encryption use increasing in P2P traffic, it seems like stateful packet inspection is becoming a less workable solution. One idea that seems to make sense to me is simply throttling down heavy users by IP, regardless of what they're sending or receiving -- but it doesn't seem many routers support that functionality at the moment. What's your preferred method to throttle P2P/BitTorrent traffic? My apologies if this is a dupe.

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• Setting up Shibboleth to secure part of a website

  - by HorusKol

  I've installed the Shibboleth module for apache on Ubuntu 10.04 using aptitude to install libapache2-mod-shib2 as per https://groups.google.com/group/shibboleth-users/browse_thread/thread/9fca3b2af04d5ca8?pli=1 and enabled the module (I have checked in /etc/apache2/mods-enabled) I then proceeded to secure a directory on the server by placing a .htaccess file with the following directives: AuthType shibboleth ShibRequestSetting requireSession 1 Require valid-user Now - I haven't set up an SSL host yet - and I also haven't set up the IdP - but I would expect that the server would block access to this directory - but I'm getting the content without any problems. I have restarted the apache service and I have no errors in the log files.

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• apxs cannot install mod_cloudflare on centos

  - by Adam

  [ Linux - CentOS - Apache 2.2 - mod_cloudflare - apxs2 ] I have changed my nameservers to point to CloudFlare. The problem is that all the IP addresses are coming in as CloudFlare's. This is no good, because I have to monitor and block some specific traffic. mod_cloudflare is supposed to resolve this but I have been unable to get this installed. The command in the documentation uses apxs2. I can't figure out how to install this, or if it just means for 'apache 2.4'. I'm running 2.2.3, and I can use 'apxs'. When I run: apxs -aic mod_cloudflare.c I get the error apxs:Error: Command failed with rc=65536 Does this mean I need apxs2 or something else? How do I get mod_cloudflare working on my server? I appreciate any help, the documentation is vague and limited.

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• Un-table a cell range in Excel 2007

  - by Joe

  In Excel 2007, if you highlight a block of cells and then "Format as Table", it doesn't just apply colors and formatting, it somehow marks those cells as being a table. Now I want to get rid of the table, but keep all the cells (i.e. keep the data). So I tried clearing the table style and formatting, but Excel still recognizes those cells as being a table. I can tell because: When I select a cell that was in the table, Excel still displays the "Table Tools / Design" tab I cannot merge cells that were in the table <- this is what's annoying me So, how do I un-table those cells? I want to keep all the cell data and formatting, but have Excel not recognize them as a table.

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• Software that supports ATA Secure Erase Command

  - by vy32

  We have a lot of drives that need to be sanitized. NIST SP 800-88 recommends software that uses the ATA Secure Erase command. That's apparently the only way to be sure that the drive is properly wiped, due to bad-block remapping and such. I know that this functionality is available in hdparm. The problem with that approach is that it is inconsistent on multiple platforms, occasionally times out, doesn't have error-checking logic, and doesn't check the resulting drive to make sure that it has, in fact, been erased. So a proper program might use hdparm, but hdparm by itself isn't an answer. I'm looking for open source software that implements ATA Secure Erase. Ideally it will be a bootable disk image like DBAN, but it will use the ATA command.

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• Configuring Nginx for Wordpress and Rails

  - by Michael Buckbee

  I'm trying to setup a single website (domain) that contains both a front end Wordpress installation and a single directory Ruby on Rails application. I can get either one to work successfully on their own, but can't sort out the configuration that would let me coexist. The following is my best attempt, but it results in all rails requests being picked up by the try_files block and redirected to "/". server { listen 80; server_name www.flickscanapp.com; root /var/www/flickscansite; index index.php; try_files $uri $uri/ /index.php; location ~ \.php$ { include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /var/www/flickscansite$fastcgi_script_name; } passenger_enabled on; passenger_base_uri /rails; } An example request of the Rails app would be http://www.flickscan.com/rails/movies/upc/025192395925

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• Puppet: Conditional file source based on naming convention

  - by thinice

  I'm getting the ball rolling on puppet for my environment - and I'd like to have a conditional file resource based on whether or not the module itself contains a file based on a naming convention. So visually, assume a module named 'mysql' and it's layout: mysql/ /files /etc/ my.cnf my.hostname1.cnf my.hostname2.cnf /manifests init.pp ... So I'd like the block to verify if the resource for the module exists or not, and take action accordingly, in pseudo-terms: file { '/etc/my.cnf': if -f 'puppet:///mysql/etc/my.$hostname.cnf' { source => 'puppet:///mysql/etc/my.$hostname.cnf' } else { source => 'puppet:///mysql/etc/my.cnf' } } This way one wouldn't have to manage a csv file or the .pp file with a host specific case statement - is this possible?

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• Which iptables rule do you think is a 'must have'

  - by Saif Bechan

  I have some basic iptable rules set up now for my vps. Just block everything except some default ports, 80,21,22,443. I do get brute forced a lot. I have heard that iptables is very powerful but I have not seen many use cases. Can you give me an example of a(some) rule(s) you always use and give a small example why. I can not find a general best practice post here on SF, if there is any I would like the link. If this is a duplicate I am sorry and it can be closed.

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• How to integrate Thunderbird with SpamAssassin running on the server?

  - by haimg

  I'm trying to integrate SpamAssassin running on a server with Thunderbird. Basically I need to be able to select several emails in Thunderbird and send them back to SpamAssassin for training, either as spam or ham. I tried several approaches: Tried "Report Spam" plugin, which is able to send message back to server either as an email attachment or via HTTP post. However, the plugin is rather buggy... Does not support sending several messages at once, "report as ham" is not working at all, etc. Wanted to make a custom button that will copy selected messages to a separate IMAP folder (I could create "LearnAsSpam" and "LearnAsHam" folders in IMAP that will get processed automatically on server), but don't even know how to approach this in Thunderbird, don't want to learn Thunderbird extention authoring... Server-side, I'm prepared to do some custom programming or integration needed (can receive a message via HTTP / SMTP / whatever), my stumbling block is Thunderbird... So, how can I send emails from Thunderbird back to SpamAssassin running on email server for Bayesian training, with as few keystrokes as possible?

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• Installing httpssl module on a running NGINX server

  - by Rob

  Hi, New to NGINX, we inherited a project that runs Django/FCGI/NGINX on a hosted RHEL box. A requirement has come in that the site now needs to have ssl enabled. Client was pretty sure the person who had built the site had made it so they could use ssl. I backed up the conf file, added the server block for the ssl instance and tried to reload. Reload failed because it didn't recognize the ssl in this line: ssl on; Not an NGINX expert, but the David Caruso in me tells me that the server (sunglasses on) is not secure. I know that you need to configure NGINX at install with this module. If this didn't happen, how hard/risky is it to reconfigure a running nginx box with this module given that we didn't configure it in the first place.

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• Windows VPN not authenticating from ADSL to Wireless link

  - by deanvz

  I have a normal windows VPN on a computer connecting to a 196.201.x.x/24 IP. If this VPN tries to connect from any address in the 41.x.x.x range it cant get there. The server is a normal windows 2008 server, running exchange with a PPPoE IP natted to a public IP on the public gateway of the wireless network as the server is on site and its connectivity is derived from Mikrotik RB's. The computer on the 41 range can traceroute and ping the server, but the VPN does not authenticate. When on the network or any other, the VPN works fine. Is there something that could be configured on the VPN client? All firewall settings of a standard ADSL router have been checked and found to block only ICMP's. Is this a VPN configuration problem or a network issue?

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• mount fstab partition with public access

  - by Mikhail

  How do I specify that an fstab mount-point should be public? I want /mnt/windows to be accessible to normal users. I believe I am using ntfs-3g. If I set the /mnt/windows to 777 will it be publicly accessible without changing the permissions on the NTFS disk? /dev/sdb4 /mnt/windows ntfs noatime 0 1 /dev/sdb5 / ext4 noatime 0 1 UUID=5AA4-168D /boot/efi vfat defaults 0 1 and localhost my_computer # stat /mnt/windows/ File: '/mnt/windows/' Size: 12288 Blocks: 24 IO Block: 512 directory Device: 814h/2068d Inode: 5 Links: 1 Access: (0700/drwx------) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2014-08-21 18:29:13.597722200 -0500 Modify: 2014-08-21 18:29:13.597722200 -0500 Change: 2014-08-21 18:29:13.597722200 -0500 Birth: -

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• Excel Matching problem with logic expression

  - by abelenky

  I have a block of data that represents the steps in a process and the possible errors: ProcessStep Status FeesPaid OK FormRecvd OK RoleAssigned OK CheckedIn Not Checked In. ReadyToStart Not Ready for Start I want to find the first Status that is not "OK". I have attempted this: =Match("<>""OK""", StatusRange, 0) which is supposed to return the index of the first element in the range that is NOT-EQUAL (<) to "OK" But this doesn't work, instead returning #N/A. I expect it to return 4 (index #4, in a 1-based index, representing that CheckedIn is the first non-OK element) Any ideas how to do this?

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• Work around for yahoo mail slowness (using 100% cpu)

  - by Tony Lee

  My yahoo mail is very slow sometimes. When it is, I notice that IE8 is using 100% cpu. Using sysinternals process explorer I discovered the thread using all the cpu in IE8 has Flash in the stackwalk. I upgraded flash from 9 to 10, but the problem persists. I'm about to edit hosts to block the flash content by redirecting the yahoo and ad click dns entries. Is there some easier way to get flash to behave? The fix for the long run will be switching to gmail.

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• Snort [PFSense] is configured but not blocking or generating alerts!

  - by Chase Florell

  I've got PFSense V 2.0-RC1 (i386) and I've got the latest version of Snort installed I've loaded up a bunch of rules from Oinkmaster, I've enabled all of the preprocessors, and I've ensured the service is started. When I let it sit for a while and then check my Alerts and Block list, there are no entries. Even when I test it by logging into Skype (skype is listed as a Rule from P2P), I don't get any entries in the logs. If you need any further information, please let me know... I simply can't figure this one out.

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• PHP Script causing high CPU

  - by user20996

  I have a website which is causing me a major headache. There is one PHP script which is using far to much CPU, this only seem to happen when bots hit the site, I dont want to block all the bots because we need them. I have the the process manager output: Pid Owner Priority CPU % Memory % Command 16943 (Trace) (Kill) specialone 0 99.4 1.0 /usr/bin/php /var/www/specialone/page.php I ran strace -p 16943 on the process but it comes up with nothing. We have 2GB of RAM and the php memory_limit is set to 128M which should be enough. The trouble I have is the PHP code is a Framework and the culprit page.php pulls in a lot of other PHP files so I cant debug the PHP. Is there any way of finding out what the script is doing when its using so much CPU which will help me solve it?

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• Changing encryption settings for Microsoft Office 2010/2013

  - by iridescent

  Although there are Office 2013 settings to change how encryption is performed, when you encrypt Open XML Format files (.docx, .xslx, .pptx, and so on) the default values — AES (Advanced Encryption Standard), 128-bit key length, SHA1, and CBC (cipher block chaining) — provide strong encryption and should be fine for most organizations. Quoted from http://technet.microsoft.com/en-us/library/cc179125.aspx . I can't figure out where is the setting to change how encryption is performed. Is there any possible to change the encryption algorithm being used instead of the default AES-128 ? Thanks.

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