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• Does WD Drive Lock encrypt the data?

  - by ssg

  I wonder if WD Drive Lock ineed encrypts the data on a Western Digital My Book Essential device or just puts a firmware-level password on the device. If it's just a password the data surely could be retrieved by a third party. I could not find anything on about that on user manuals. I found a blog saying "data is secured with AES256" bla bla but that doesn't say anything about if the password could be compromised or not. Because I don't see any delays when I add/remove the password. On the other hand when I enable BitLocker, it takes hours before it encrypts everything with my password.

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• Bad ways to secure wireless network.

  - by Moshe

  I was wondering if anybody had any thoughts on this, as I recently saw a Verizon DSL network set up where the WEP key was the last 8 characters of the router's MAC address. (It's bad enough that hey were using WEP in the first place...)

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• Sensitive data in init scripts

  - by Steve Jorgensen

  I'm adapting some examples I've found by Googling to build an init script to run a VirtualBox OSE virtual machine as a daemon. I would like to specify a password for VNC access to the VM, and this must be given as an argument to the VBoxHeadless command. Conventionally, init scripts are readable by standard users, and this seems like a useful convention, but I also don't want the VNC password for this VM to be stored in easily accessible plain text. What's the most appropriate/conventional way to handle this kind of situation? Maybe put a root-readable supporting data file someplace, and have the init script load the value from there?

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• Encrypt LAN and wifi traffic on small private network

  - by Grimlockz

  I need some advice about encrypt all traffic on a small private network running wi-fi and LAN traffic on 192.168.0.x network. The network would comprise of client laptops connecting to the wi-fi router (192.168.0.254) via ethernet connection or wireless. The main purpose of the server is for the client laptops to talk to two servers on different IP's (192.168.0.200 and 192.168.0.201) on ports 80 and 433. My main concern is having packet sniffers and what not getting access to the data. The only ways I see at the moment is to have VPN running on the network or use IPSec policy's to do this. Any other ways guys?

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• How do I remove the ServerSignature added by mod_fcgid?

  - by matthew

  I'm running Mod_Security and I'm using the SecServerSignature to customize the Server header that Apache returns. This part works fine, however I'm also running mod_fcgid which appends "mod_fcgid/2.3.5" to the header. Is there any way I can turn this off? Setting ServerSignature off doesn't do anything. I was able to get it to go away by changing the ServerTokens but that removed the customization I had added.

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• how insecure is my short password really?

  - by rika-uehara

  Using systems like TrueCrypt, when I have to define a new password I am often informed that using a short password is insecure and "very easy" to break by brute-force. I always use passwords of 8 characters in length, which are not based on dictionary words, which consists of characters from the set A-Z, a-z, 0-9 I.e. I use password like sDvE98f1 How easy is it to crack such a password by brute-force? I.e. how fast. I know it heavily depends on the hardware but maybe someone could give me an estimate how long it would take to do this on a dual core with 2GHZ or whatever to have a frame of reference for the hardware. To briute-force attack such a password one needs not only to cycle through all combinations but also try to de-crypt with each guessed password which also needs some time. Also, is there some software to brute-force hack truecrypt because I want to try to brute-force crack my own passsword to see how long it takes if it is really that "very easy".

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• Using SSLv3 - Enabling Strong Ciphers Server 2008

  - by Igor K

  I've disabled SSLv2 and SSLv3 is on. However I cannot connect to a remote server which fails with The client and server cannot communicate, because they do not possess a common algorithm Ran an SSL check (http://www.serversniff.net/sslcheck.php) on the remote server and ours, and noticed none of the ciphers they accept we have on our server. How can this be configured? (Windows Web Server 2008) Remote Server Accepted SSL ciphers: DHE-RSA-AES256-SHA AES256-SHA EDH-RSA-DES-CBC3-SHA DES-CBC3-SHA DHE-RSA-AES128-SHA AES128-SHA Our server by default accepts: DES-CBC3-SHA RC4-SHA RC4-MD5

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• Disable mod_security on Dreamhost, for a single cgi script

  - by Hippyjim

  Hi I've searched around a lot, and tried various tweaks to .htaccess files to try to turn off mod_security for a particular cgi script (uber uploader) but it doesn't seem to have any effect. The most popular one I see rehashed all over the web is: # Turn off mod_security filtering. SecFilterEngine Off # The below probably isn't needed, # but better safe than sorry. SecFilterScanPOST Off Which looks relative simple to me - if "SecFilterEngine" is in some way related to mod_security of course. Shame it has absolutely no effect! Does anyone have a suggested way I can simply disable it for a request to any file in my cgi-bin directory?

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• How to securely store and update backup on remote server via ssh/rsync

  - by Sergey P. aka azure

  I have about 200 Gb of pictures (let's say about 1 mb/file, 200k files) on my desktop. I have access (including root access) to remote linux server. And I want to have updateable backup of my pictures on remote server. rsync seems to be the right tool for such kind of job. But other people also have access (including root access) to this server and I want to keep my pictures private. So the question is: what is the best way to keep private files on remote "shared" linux server securely?

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• How do I disable administrator prompt in Windows 8?

  - by Arnold Zokas

  I am using Windows 8 Enterprise on my development machine. Most of the time, I need full administrator for debugging, changing system files, etc. In Windows 7, setting UAC to "never notify" would disable any administrator prompts. In Windows 8 this is no longer the case. Even with UAC disabled I get prompted to grant programs elevated privileges. Is there a way disable this behaviour? Note: I am fully aware of the repercussions. I have antivirus, firewall, etc and am generally quite careful about what I download or install on my machine.

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• How do I find out if mod_security is installed on my apache server?

  - by Haluk

  How can I find out if mod_security is installed on my apache server? I would also like to learn its version. I'm having some upload issues and I tried to disable mod_security using .htaccess. But that started producing 500 internal server errors. I read somewhere that depending on my mod_security version I might not be able to disable it using .htaccess. So I would like to understand if I have mod_security installed and what version it is. I'm on a centos 5 box. Thanks! UPDATE -1 xxxxxxxxxxxxx Does the below output mean I do not have mod_security installed? [root@u11 htdocs]# httpd -l Compiled in modules: core.c prefork.c http_core.c mod_so.c

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• How to disable mod_security2 rule (false positive) for one domain on centos 5

  - by nicholas.alipaz

  Hi I have mod_security enabled on a centos5 server and one of the rules is keeping a user from posting some text on a form. The text is legitimate but it has the words 'create' and an html <table> tag later in it so it is causing a false positive. The error I am receiving is below: [Sun Apr 25 20:36:53 2010] [error] [client 76.171.171.xxx] ModSecurity: Access denied with code 500 (phase 2). Pattern match "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" at ARGS:body. [file "/usr/local/apache/conf/modsec2.user.conf"] [line "352"] [id "300015"] [rev "1"] [msg "Generic SQL injection protection"] [severity "CRITICAL"] [hostname "www.mysite.com"] [uri "/node/181/edit"] [unique_id "@TaVDEWnlusAABQv9@oAAAAD"] and here is /usr/local/apache/conf/modsec2.user.conf (line 352) #Generic SQL sigs SecRule ARGS "((alter|create|drop)[[:space:]]+(column|database|procedure|table)|delete[[:space:]]+from|update.+set.+=)" "id:1,rev:1,severity:2,msg:'Generic SQL injection protection'" The questions I have are: What should I do to "whitelist" or allow this rule to get through? What file do I create and where? How should I alter this rule? Can I set it to only be allowed for the one domain, since it is the only one having the issue on this dedicated server or is there a better way to exclude table tags perhaps? Thanks guys

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• Just added mod_security... want to whitelist a series of sub directories.

  - by kylex

  I am running a host and just updated mod_security. It "broke" a CMS in multiple sites. I want to white list all sub-directories named CMS. How do I specify a rule to do that?

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• LDAP for privilege control?

  - by neoice

  I've been wondering for a while if LDAP can be used to control user privileges. For example, if I have UNIX and web logins, is there an easy way to grant a user access to just or just UNIX (or even both?) My current attempt at solving this very problem was to create 'login' and 'nologin' groups, but this doesn't seem fine-grained enough to meet the ideas I have in my head. I'm also still in the situation where all UNIX users are web users, which isn't a problem so much as an indicator of the limitations. Does anyone have any input on this? Has this problem already been solved?

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• Open source system for swipe card access?

  - by Moduspwnens

  We're looking at replacing our campus-wide magnetic swipe card system with something more robust. The "programmer" side of me says there's got to be an open-source, scalable solution that already does this, but all I've been able to find are proprietary vendor-specific solutions. Ideally, it'd have the following: Based on some open standard that allows us to select from a wide selection of card readers (like IMAP or HTTP) Support different kinds of card access (magnetic strip, RFIDs, etc.) Future-proof (to the extent possible) The lack of information I'm finding leads me to believe I'm not searching for the right things... or such a solution doesn't exist. Is there not some basic, open-source solution to this (like MySQL for databases, or Moodle for an LMS, or Apache for a web server)?

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• How to protect an OS X Server from an anautorized physical connection?

  - by GJ

  Hi I have an OS X 10.6 server, which I administer via SSH and VNC (via SSH tunnel). I can't leave it at the login window since then VNC connections are refused. Therefore I currently leave it logged with my user account. Since it doesn't have a monitor attached, it doesn't go into screen saver mode, which means it doesn't require a password to retake control. This means it is very easy for anyone connecting a keyboard/mouse and monitor to take control of the system. The screen saver password protection, which I can't get to activate, unlike the system's login window, is perfectly compatible with VNC connections. How could I prevent such direct access to the server without connecting a monitor and without blocking my ability to connect with VNC? Thanks!

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• WEP/WPA/WPA2 and wifi sniffing

  - by jcea

  Hi, I know that WEP traffic can be "sniffed" by any user of the WIFI. I know that WPA/WPA2 traffic is encrypted using a different link key for each user, so they can't sniff traffic... unless they capture the initial handshake. If you are using a PSK (preshared key) schema, then you recover the link key trivially from this initial handshake. If you don't know the PSK, you can capture the handshake and try to crack the PSK by bruteforce offline. Is my understanding correct so far?. I know that WPA2 has AES mode and can use "secure" tokens like X.509 certificates and such, and it is said to be secure against sniffing because capturing the handshake doesn't help you. So, is WPA2+AES secure (so far) against sniffing, and how it actually works?. That is, how is the (random) link key negociated?. When using X.509 certificates or a (private and personal) passphrase. Do WPA/WPA2 have other sniffer-secure modes beside WPA2+AES? How is broadcast traffic managed to be received by all the WIFI users, if each has a different link key?. Thanks in advance! :).

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• How to create limited user accounts in Linux

  - 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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• Restricting Access to Application(s) on Point of Sale system

  - by BSchlinker

  I have a customer with two point of sale systems, a few workstations and a Windows 2003 SBS Server. The point of sale systems are typically running QuickBooks Point of Sale and are logged in with a user who has restricted permissions / access (via Group Policy). Occasionally, one of the managers needs to be able to run a few additional applications -- including some accounting software. I have created an additional user for this manager, allowing them to login and access the accounting software. The problem is, it can be problematic to switch users on the system, as QuickBooks takes a few minutes to close (on POSUser) and then reopen (on ManagerUser). If customers are waiting, this slows things down drastically. Since the accounting software is stored on a network drive, it would be easiest if the manager could simply double click something, authenticate against the network drive / domain controller and then the program would launch. When they close the program, the session to the network drive would be lost and the program would no longer be accessible. Is there any easy way to do this? Both users are on a domain and the system is Windows 7. I just don't want to require the user to switch back and forth. In a worst case scenario, they forget to switch back and leave the accounting software wide open.

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• My website is infected, I restored a backup of the uninfected files, how long will it take to un-mark as dangerous?

  - by Cyclone

  My website www.sagamountain.com was recently infected by a malware distributor (or at least I think it may have been). I have removed all external content, google ads, firefly chat, etc. I uploaded a backup from a few weeks ago, when there was no issue. I patched the SQL injection hole. Now, how long will it take to unmark it as dangerous? Where can I contact google? I am not sure if this is the right place to post it, but since it may have been a server issue I may as well. Can sites inject base64 code via a virus on the whole server, or is it only via sql injection? Thanks for the help, viruses freak me out. Is there an online virus scanner that can scan my page and tell me what is wrong?

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• How can I lock my Mac when I walk away?

  - by schnapple

  This has got to be an easy, trivial question but as a new Mac user, how can I lock my Mac when I walk away? On Windows this is dead simple - Win+L. Or hit Ctrl-Alt-Del and select "Lock this Computer" The best thing I've found for the Mac is to rig the screensaver to require password on wake, set a hot corner to fire off the screen saver, and do that as I leave. Which feels really "Windows 3.1" to me. Is there a Win+L-style method to quickly lock my Mac when I walk away?

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• Registry remotley hacked win 7 need help tracking the perp

  - by user577229

  I was writing some .VBS code at thhe office that would allow certain file extensions to be downloaded without a warning dialog on a w7x32 system. The system I was writing this on is in a lab on a segmented subnet. All web access is via a proxy server. The only means of accessing my machine is via the internet or from within the labs MSFT AD domain. While writing and testing my code I found a message of sorts. Upon refresing the registry to verify my code changed a dword, instead the message HELLO was written and visible in regedit where the dword value wass called for. I took a screen shot and proceeded to edit my code. This same weird behavior occurred last time I was writing registry code except on another internal server. I understand that remote registry access exists for windows systems. I will block this immediately once I return to the office. What I want to know is, can I trace who made this connection? How would I do this? I suspect the cause of this is the cause of other "odd" behaviors I'm experiencing at work such as losing control of my input director master control for over an hour and unchanged code that all of a sudden fails for no logical region. These failures occur at funny times, whenver I'm about to give a demonstration of my test code. I know this sounds crazy however knowledge of the registry component makes this believable. Once the registry can be accessed, the entire system is compromised. Any help or sanity checking is appreciated.

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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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• Securing a local server physically

  - by Daniele

  We are an online business. We have a very powerful server with hard disk mirroring in our office that we are using for a variety of internal business-critical functions. We want to keep that machine in our office but we want to make sure it is as secure as possible (within reason). Obviously we are already backing it up everyday off-site. My question is more about not-too-expensive physical measures to protect the machine against thieves and disasters such as fire. What would you suggest?

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• mystery Internet traffic to port 445

  - by Ben Collver

  Recently, I noticed traffic from the office network to TCP port 445 on the Internet [a]. Below are the Linux firewall log entries to Facebook's network [b] and Google's network [c]. I would like to identify the source of this traffic. My first guess is that Facebook and Google might be using multiple TCP ports for SSL load balancing. However, I could not confirm this based on the web proxy logs. What else might it be? [a] http://support.microsoft.com/kb/204279 [b] Sep 4 08:30:03 firewall01 kernel: IN=eth0 OUT=eth2 SRC=10.0.0.131 DST=69.171.237.34 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=14287 DF PROTO=TCP SPT=51711 DPT=445 WINDOW=8192 RES=0x00 SYN URGP=0 [c] Aug 28 06:02:41 firewall01 kernel: IN=eth0 OUT=eth2 SRC=10.0.0.115 DST=173.194.33.47 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=4558 DF PROTO=TCP SPT=49294 DPT=445 WINDOW=8192 RES=0x00 SYN URGP=0

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