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  • What email server should I choose?

    - by DCC
    I need a secure email server installed in debian-lenny with users in a mysql table. Also users are from multiple domains. Quota should be in mysql or a global variable for all users. What are my options ? THanks in advance for your help.

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  • Mac OS X Lion 10.7.2 update breaks SSL

    - by mcandre
    Summary After updating from 10.7.1 to 10.7.2, neither Safari nor Google Chrome can load GMail. Spinning Beachballs all around. The problem isn't GMail; Firefox loads GMail just fine. The problem isn't limited to Safari or Google Chrome; Other applications also have trouble with SSL: Gilgamesh and Safari. Any program that uses WebKit (Google Chrome, Safari) or a Cocoa library (Gilgamesh) to access the Internet has trouble loading secure sites. The various forums online suggest a handful of fixes, none of which work. Analysis Fix #1: Open Keychain Access.app and delete the Unknown certificate. The 10.7.2 update also prevents Keychain Access from loading. The Keychain program itself Spinning Beachballs. Fix #2: Delete ~/Library/Keychains/login.keychain and /Library/Keychains/System.keychain. This temporarily resolves the issue, and lets you load secure sites, but a minute or two after rebooting or hibernating somehow magically undoes the fix, so you have to delete these files over and over. Fix #3: Delete ~/Library/Application\ Support/Mob* and /Library/Application\ Support/Mob*. There is a rumor that the new MobileMe/iCloud service ubd is causing the issue. This fix does not resolve the issue. Fix #4: Open Keychain Access, open the Preferences, and disable OCSP and CRL. This fix does not resolve the issue. Fix #5: Use the 10.7.0 - 10.7.2 combo installer, rather than the 10.7.1 - 10.7.2 installer. When I run the combo installer, it stays forever at the "Validating Packages..." screen. The combo installer itself is bugged to He||. I force-quit the installer, ran "sudo killall installd" to force-quit the background installer process, and reran the combo installer. Same problem: it stalls at "Validing Packages..." Recap The only fix that works is deleting the keychains, but you have to do this every time you reboot or wake from hibernate. There is some evidence that ubd continually corrupts the keychain files, but the suggested ubd fix of deleting ~/Library/Application\ Support/Mob* and /Library/Application\ Support/Mob* does not resolve this issue. Evidently, something is corrupting the keychain over and over and over. Also posted on the Apple Support Communities.

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  • SELinux vs. AppArmor vs. grsecurity

    - by Marco
    I have to set up a server that should be as secure as possible. Which security enhancement would you use and why, SELinux, AppArmor or grsecurity? Can you give me some tips, hints, pros/cons for those three? AFAIK: SELinux: most powerful but most complex AppArmor: simpler configuration / management than SELinux grsecurity: simple configuration due to auto training, more features than just access control

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  • How to use the 4-in-1 card reader on my Lenovo x100e?

    - by Thomas Padron-McCarthy
    My Lenovo x100e laptop has a "4-in-1" card reader that's supposed to handle SD/SDHC, MMC, Memory Stick and MS Pro, but I can't insert my SDHC card (a "SANDISK SECURE DIGITAL EXTREME SDHC 16GB 30MB/S"). It enters a bit and looks lite it will fit, but then it doesn't get any further in (and yes, I've tried to turn it around). It really doesn't move, and I'm afraid to break something if I push harder. Am I missing something obvious here?

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  • Personal email server

    - by celil
    I would like to set up a personal email server. I am currently using Gmail, but I am becoming increasingly concerned at the amount of data that I share with Google. I would like to migrate all of my email to my personal server. Is there an easy to use, secure, open source alternative to Gmail that can be ran on personal servers? I do not need a web interface to my email as I usually access it via IMAP.

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  • Personal email server

    - by celil
    I would like to set up a personal email server. I am currently using Gmail, but I am becoming increasingly concerned at the amount of data that I share with Google. I would like to migrate all of my email to my personal server. Is there an easy to use, secure, open source alternative to Gmail that can be ran on personal servers? I do not need a web interface to my email as I usually access it via IMAP.

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  • Downloading Microsoft Security Essentials via https

    - by Marcel
    I want to download Microsoft Security Essentials on my brand new Windows 7 home PC. The official site presented to me is http://windows.microsoft.com/de-CH/windows/products/security-essentials, as I am located in Switzerland. The link to the actual package then is http://go.microsoft.com/fwlink/?LinkID=231276 Obviously, the download is not secured with https. Why? Would this not be the first thing Microsoft should do? They could deliver the certificate already with the OS to make it really secure...

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  • Mac - Windows VPN

    - by user61652
    Hi, I am trying to setup a secure vpn server (Ipsec l2tp) on windows so I can connect to it using my mobile mac or any other windows pc. It seems it is quite a hassle to do this. Does anyone have any good suggestions, maybe a software or open source. Note that I have not yet encountered a piece of ware that can run on both windows and mac. I would ideally prefer a single UI rather than learn two. BR

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  • Account sharing among Ubuntu machines

    - by muckabout
    I'd like a simple and secure system to have allow users in our network to have their account (e.g., 'myname') work on every machine in the network (e.g., such that they could ssh to any machine and have the same userid, mounted smb share). Any suggestions?

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  • How do I securely delete cookies and saved passwords?

    - by Matt Solnit
    Is there a way, from inside the browser, to delete cookies and saved passwords in such a way that the data is unrecoverable (similar to Secure Empty Trash)? I know I can probably track down all the files involved and then manually do this, but I'm curious if there's an easier way. Or maybe browsers already do it out of the box? I'm specifically looking for solutions for Firefox and Safari, on Mac OS X.

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  • SSH Tunneling From Mac to Windows Server 2008

    - by 5arx
    I've been using Bitvise Tunnelier for a good few years to get secure access to my home server. This week I've switched to OS X and can't seem to find a nice GUI-based app to allow me to connect SSH/SFTP/Remote Desktop thru an SSH tunnel. Can anyone please advise? I'm not overly keen on the command line... Thanks for reading :-D

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  • KeePass: use a key file or a regular password?

    - by RCIX
    I'm setting up a KeePass database and it offers the ability to use a key file, which it says is more secure because it can use a longer and more complex password but is easier to break because you only need the key file to open the database. I'll only be using the key file on 2 computers (one desktop and one laptop), wo which is the best option? Note that it's definitely more appealing to use the key file for me because i have a hard time remembering anything close to a random password.

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  • Automounting AFP Share For OpenDirectory Users (Mac Lion Server)

    - by davzie
    We're moving all our Mac's from local logins to OpenDirectory logins in an effort to keep everything secure and to also solve issues we have with a Tiger server buggering permissions on an AFP shared drive. To cut it short, I want users to be able to login to their OpenDirectory account and I then want the AFP share point to mount using the credentials they just logged in with. Firstly, is this possible (I assumed it was) and secondly how might I go about doing it? Cheers, Dave

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  • Explanation of the init.d/scripts Fedora

    - by Shahmir Javaid
    Below is a copy of vsftpd, i need some explanations of some of the scripts mentioned below in this script: #!/bin/bash # ### BEGIN INIT INFO # Provides: vsftpd # Required-Start: $local_fs $network $named $remote_fs $syslog # Required-Stop: $local_fs $network $named $remote_fs $syslog # Short-Description: Very Secure Ftp Daemon # Description: vsftpd is a Very Secure FTP daemon. It was written completely from # scratch ### END INIT INFO # vsftpd This shell script takes care of starting and stopping # standalone vsftpd. # # chkconfig: - 60 50 # description: Vsftpd is a ftp daemon, which is the program \ # that answers incoming ftp service requests. # processname: vsftpd # config: /etc/vsftpd/vsftpd.conf # Source function library. . /etc/rc.d/init.d/functions # Source networking configuration. . /etc/sysconfig/network RETVAL=0 prog="vsftpd" start() { # Start daemons. # Check that networking is up. [ ${NETWORKING} = "no" ] && exit 1 [ -x /usr/sbin/vsftpd ] || exit 1 if [ -d /etc/vsftpd ] ; then CONFS=`ls /etc/vsftpd/*.conf 2>/dev/null` [ -z "$CONFS" ] && exit 6 for i in $CONFS; do site=`basename $i .conf` echo -n $"Starting $prog for $site: " daemon /usr/sbin/vsftpd $i RETVAL=$? echo if [ $RETVAL -eq 0 ]; then touch /var/lock/subsys/$prog break else if [ -f /var/lock/subsys/$prog ]; then RETVAL=0 break fi fi done else RETVAL=1 fi return $RETVAL } stop() { # Stop daemons. echo -n $"Shutting down $prog: " killproc $prog RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog return $RETVAL } # See how we were called. case "$1" in start) start ;; stop) stop ;; restart|reload) stop start RETVAL=$? ;; condrestart|try-restart|force-reload) if [ -f /var/lock/subsys/$prog ]; then stop start RETVAL=$? fi ;; status) status $prog RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|try-restart|force-reload|status}" exit 1 esac exit $RETVAL Question I What the hell is the difference between the && and || signs in the below commands, and is it just an easy way to do a simple if check or is it completely different to a if[..something..]; then ..something.. fi: # Check that networking is up. [ ${NETWORKING} = "no" ] && exit 1 [ -x /usr/sbin/vsftpd ] || exit 1 Question II i get what -eq and -gt is (equal to, greater than) but is there a simple website that explains what -x, -d and -f are? Any help would be apreciated Running Fedora 12 on my OS. Script copied from /etc/init.d/vsftpd Question III It says required starts are $local_fs $network $named $remote_fs $syslog but i cant see any where it checks for those.

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  • how to configure a dedicated server as a web server using shell?

    - by alhoseany
    I need some good tutorials that covers the topic of initial configuration of a dedicated server as a secure powerful and up to date web server. The server will have centos6 and cpanel already installed. And will be hosting wordpress and joomla websites. Security and flexibility is my big concern. I know about how to forge website but i need something more advanced and optimized for wordpress and joomla.

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  • Best Photo Sharing Website for Teams/Organizations [closed]

    - by Patrick Cuff
    I manage the website for my daughter's U-10 soccer team. I'd like to set up a place where team members can both view and upload pictures. It needs to be secure, so that only authorized/registered members can view and upload pics. I've looked into Picasa and Flickr, and while both are good for sharing photos, only one registered user can upload. Are there any good sites that allow multiple people to upload photos?

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  • Recommend a free/cheap CRM system [closed]

    - by Dan Hedley
    I am part of a 4 person volunteer team who manage a small housing development in London. We need a low-cost/no-cost contact management and issue tracking system. Specifically, it needs to be: -Web-based, or easily shared between 4 people working out of their homes -Easy to backup and restore -Decently secure Does anyone have any recommendations? I am reasonably technically literate, so a PHP-based solution running on a cheap hosting package would definitely be a viable option. Many thanks.

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  • Preparing laptops for theft

    - by ccook
    With a number of laptops out there the likelihood of one being stolen is high. What methods, preferably free, can be used to secure the data on the computers? The laptops do not have any special hardware on them, and generally keep their user data in a dropbox folder. One small step taken is to have the the dropbox folder encrypted by Windows 7. Any additional suggestions are greatly appreciated. The data in the dropbox folder is sensitive.

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  • emule cannot create Incoming Files directory

    - by Tim
    Hi, I have installed emule on Windows 7. When I start emule, I will receive a message "failed to create Incoming Files directory 'C:\Program Files\eMule\Incoming' - Access is denied", similar message for "C:\Program Files\eMule\Temp" and "Failed to initialize cryptokeys - secure ident disabled". It looks like Windows 7 does not allow emule to make such operation. How can I give emule the right to do what it needs? Thanks!

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  • Windows Server 2003 W3SVC Failing, Brute Force attack possibly the cause

    - by Roaders
    This week my website has disappeared twice for no apparent reason. I logged onto my server (Windows Server 2003 Service Pack 2) and restarted the World Web Publishing service, website still down. I tried restarting a few other services like DNS and Cold Fusion and the website was still down. In the end I restarted the server and the website reappeared. Last night the website went down again. This time I logged on and looked at the event log. SCARY STUFF! There were hundreds of these: Event Type: Information Event Source: TermService Event Category: None Event ID: 1012 Date: 30/01/2012 Time: 15:25:12 User: N/A Computer: SERVER51338 Description: Remote session from client name a exceeded the maximum allowed failed logon attempts. The session was forcibly terminated. At a frequency of around 3 -5 a minute. At about the time my website died there was one of these: Event Type: Information Event Source: W3SVC Event Category: None Event ID: 1074 Date: 30/01/2012 Time: 19:36:14 User: N/A Computer: SERVER51338 Description: A worker process with process id of '6308' serving application pool 'DefaultAppPool' has requested a recycle because the worker process reached its allowed processing time limit. Which is obviously what killed the web service. There were then a few of these: Event Type: Error Event Source: TermDD Event Category: None Event ID: 50 Date: 30/01/2012 Time: 20:32:51 User: N/A Computer: SERVER51338 Description: The RDP protocol component "DATA ENCRYPTION" detected an error in the protocol stream and has disconnected the client. Data: 0000: 00 00 04 00 02 00 52 00 ......R. 0008: 00 00 00 00 32 00 0a c0 ....2..À 0010: 00 00 00 00 32 00 0a c0 ....2..À 0018: 00 00 00 00 00 00 00 00 ........ 0020: 00 00 00 00 00 00 00 00 ........ 0028: 92 01 00 00 ... With no more of the first error type. I am concerned that someone is trying to brute force their way into my server. I have disabled all the accounts apart from the IIS ones and Administrator (which I have renamed). I have also changed the password to an even more secure one. I don't know why this brute force attack caused the webservice to stop and I don't know why restarting the service didn't fix the problem. What should I do to make sure my server is secure and what should I do to make sure the webserver doesn't go down any more? Thanks.

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  • SSL connection error during handshake on Windows Server 2008 R2

    - by Thomas
    I have a Windows 2008 R2 Server that runs a HTTPS Tunneling service. The software uses a certificate that is provided via the Windows certificate store. The certificate is located in the local computer private certificates. It supports server and client authentication with signing and keyencipherment. Cert chain The certificate chain looks fine. It's a Thawte SSL123 certificate. Thawte Premium Server CA (SHA1) [?e0 ab 05 94 20 72 54 93 05 60 62 02 36 70 f7 cd 2e fc 66 66] thawte Primary Root CA [?1f a4 90 d1 d4 95 79 42 cd 23 54 5f 6e 82 3d 00 00 79 6e a2] Thawte DV SSL CA [3c a9 58 f3 e7 d6 83 7e 1c 1a cf 8b 0f 6a 2e 6d 48 7d 67 62] Server certificate Issues Most browsers accept the certificate without any warning. But IE 7 on Windows XP SP3 and Opera 12 on OSX just report an connection error. Opera complains: Secure connection: fatal error (552) https://www.example.com/ Opera was not able to connect to the server, because the server does not communicate via any secure protocol known to Opera. A connection test using openssl s_client -connect www.example.com:443 -state says: CONNECTED(00000003) SSL_connect:before/connect initialization SSL_connect:SSLv2/v3 write client hello A 52471:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:/SourceCache/OpenSSL098/OpenSSL098-35.1/src/ssl/s23_lib.c:182: ssldump -aAHd host www.example.com during curl https://www.example.com/ reports: New TCP connection #1: localhost(53302) <-> www.example.com(443) 1 1 0.0235 (0.0235) C>SV3.1(117) Handshake ClientHello Version 3.1 random[32]= 50 77 56 29 e8 23 82 3b 7f e0 ae 2d c1 31 cb ac 38 01 31 85 4f 91 39 c1 04 32 a6 68 25 cd a0 c1 cipher suites Unknown value 0x39 Unknown value 0x38 Unknown value 0x35 TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA TLS_RSA_WITH_3DES_EDE_CBC_SHA Unknown value 0x33 Unknown value 0x32 Unknown value 0x2f Unknown value 0x9a Unknown value 0x99 Unknown value 0x96 TLS_RSA_WITH_RC4_128_SHA TLS_RSA_WITH_RC4_128_MD5 TLS_DHE_RSA_WITH_DES_CBC_SHA TLS_DHE_DSS_WITH_DES_CBC_SHA TLS_RSA_WITH_DES_CBC_SHA TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA TLS_RSA_EXPORT_WITH_DES40_CBC_SHA TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 TLS_RSA_EXPORT_WITH_RC4_40_MD5 Unknown value 0xff compression methods unknown value NULL 1 0.0479 (0.0243) S>C TCP FIN 1 0.0481 (0.0002) C>S TCP FIN Thawte provides two Java based SSL Checkers. The Legacy Thawte SSL Certificate Installation Checker and the sslToolBox. Both validate the certificate under Windows XP but report connection errors under OSX and Windows 2008 R2.

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