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• TrueCrypt with blank password

  - by TheSavo

  This might sound like an odd question, but please hear me out. I want to setup my laptop to use TrueCrypt, but without a password. My wife doesn't travel much with her notebook. There are occasions where we will have to travel and bring the notebook with us. This is when we would like the have the encryption. The time it takes to to change the unlock pass-phrase is considerably less than it takes to encrypt the drive. My thoughts are to leave the disk encrypted but with no password. Then when it's time to pack for a trip and bring the laptop, we would then change the pass-phrase and create a rescue disk.

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• Mitigating the 'firesheep' attack at the network layer?

  - by pobk

  What are the sysadmin's thoughts on mitigating the 'firesheep' attack for servers they manage? Firesheep is a new firefox extension that allows anyone who installs it to sidejack session it can discover. It does it's discovery by sniffing packets on the network and looking for session cookies from known sites. It is relatively easy to write plugins for the extension to listen for cookies from additional sites. From a systems/network perspective, we've discussed the possibility of encrypting the whole site, but this introduces additional load on servers and screws with site-indexing, assets and general performance. One option we've investigated is to use our firewalls to do SSL Offload, but as I mentioned earlier, this would require all of the site to be encrypted. What's the general thoughts on protecting against this attack vector? I've asked a similar question on StackOverflow, however, it would be interesting to see what the systems engineers thought.

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• Is there a Linux kernel boot parameter to configure an IPv6 address?

  - by aef

  I know there is a parameter named ip which lets you configure IPv4 addresses on the Linux kernel through the boot loader. That looks like the following: ip=192.0.2.1::192.0.2.62:255.255.255.192::eth0:none I'm looking for an equal parameter for IPv6 configuration. I couldn't find anything about this in the kernel documentations. Update: Because of a lot of you asked why I would need this: The idea to use a kernel configuration came up related to this problem. I suspect the regular boot-up interface configuration is not done, because the interfaces are already up. The reason for this could be that I'm using a pre-boot environment with a Dropbear SSH server to allow me to unlock my encrypted root partition. The IP addresses for this environment are configured through GRUB with the ip= parameter. There is no DHCP or Router Advertisement available on that Ethernet segment and as this is the uplink segment provided by a large hosting company, there is no way to change that fact.

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• Where are the SQLServer jobs stored?

  - by Saiyine

  I'd like to know what is the process a SqlServer job is executing, but I only can find that it calls DTSRun with an encrypted string. After decoding the string, it results is just the name of the job with the user and the password. How can I find what is this job really calling? Edit: I've found a candidate, they could be at the msdb.sysdtspackages, but again, can't read them as SQLServer says the data is binary. How can I read them to confirm they are the jobs?

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• Display "iftop" on web

  - by DmitrySemenov

  I do iftop -i eth1 > out.txt It does produce the file with "encrypted" UI content such as [(B[)0[[1;80r[[mO[[?7h[[?1h[=[[H[[J[[0;7mO Listening on eth1 [[1;48H[[mO12.5Kb Is it possible to display this as a web xhtml output somehow? cat out.txt on my console does produce a normal iftop window but when I do the same thing over the web I get the content above. I understand that it is "managed" on kernel level. Is the task that I want to perform possible?

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• How to put fear of God (law) into Wi-Fi hacking neighbors [closed]

  - by Shakehar

  I live in an apartment and some new guys have apparently moved into one of the apartments. They have been shamelessly hacking into my WiFi. Mine was initially a WEP encrypted network and out of laziness I just limited and reserved the IPS on my router for the people in my house. Yesterday I had to free up an IP for a guest in my house but before he could join the network these guys connected in. I have changed my encryption to WPA2 and hope they dont have the hardware/patience required to hack into it, but there are many wi-fi networks in my apartment most of which are secured using WEP. I don't really want to call the police on them. Is there any way to deter them from misusing other people's wi-fi ? I have gone through I think someone else has access to my wireless network. What next? but I have already taken the steps mentioned there.

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• Using TrueCrypt (software encryption) with an SSD

  - by Shackrock

  I use full drive encryption (FDE) w/ TrueCrypt on my laptop. I have a 2nd gen I7 with AES instruction support, so honestly I can't even notice a speed change on the system with it on. My question, is for those who know about SSD's a lot. I previously (early 2011) read articles about how software encryption will negate the speed benefits that an SSD provides - because of the need for the SSD to send a delete command, then a write command, for every encrypted write - instead of just writing over data like a regular HDD would (or something like this...honestly I can't remember...ha!). Anyway, any improvements in this field? Is it pointless for me to grab an SSD if I'm using FDE? Thanks all.

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• Decrypting a TrueCrypt drive pulled from another machine

  - by Blakeg08

  I work in a corporate environment and we are now required to encrypt laptops. I have already encrypted about 5 or 6 out of 40. I still have a few questions before we go all out with TrueCrypt. Can I decrypt a hard drive by plugging it into my desktop using a data transfer kit? I tried this and the hard drive showed up asking me to format before using the volume. If I have the TRD from each laptop backed up do I still need to backup the volume headers? What else do I need to back up? Thanks.

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• Determine compression ratio for Windows compressed drive

  - by munrobasher

  Is there a Windows 7 native way to display the overall compression ratio on a Windows compressed drive? As part of our disaster recovery process, we're copying some key system folders onto 2TB external hard drive, encrypted using TrueCrypt and copied using robocopy. The drive is compressed and I'd like to see what kind of compression ratio we're getting and whether it's actually worth the performance overhead. I know that TreeSize can possibly do this (as mentioned in another post) but want a OS native way if possible. Thanks, Rob.

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• Encrypt backups with GPG to multiple tapes

  - by Dan

  Currently, I use tar to write my backups (ntbackup files) to a tape drive fed by an autoloader. Ex: tar -F /root/advancetape -cvf /dev/st0 *.bkf (/root/advancetape just has the logic to advance to the next tape if there is one available or notify to swap the tapes out) I was recently handed the requirement to encrypt our tape backups. I can easily encrypt the data with no problems using GPG. The problem I'm having is how do I write this to multiple tapes with the same logic that tar uses to advance the tapes once the current one is filled? I cannot write the encrypted file to disk first (2+TB). As far as I can tell, tar will not accept binary input from stdin (it's looking for file names). Any ideas? :(

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• Fully secured gateway web sites

  - by SeaShore

  Hello, Are there any web sites that serve as gateways for fully encrypted communication? I mean sites with which I can open a secured session, and then to exchange through them with other sites in a secure way both URLs and content? Thanks in advance. UPDATE Sorry for not being clear. I was wondering if there was a way to access any site over the Internet (http or https) without letting any Intranet-proxy read the requested URL or the received content. My question is whether such a site exists, e.g.: I am connected to that site via https, I send it a URL in a secured way, the site gets the content from the target site (possibly in a non-secured way) and returns to me the requested content in a secured way.

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• VPN PPTPD with MPPE Support for Debian or Ubuntu

  - by user78395

  Having an unencrypted vpn connection from a windows client to linux is pretty easy by using pptpd. When I was looking for an solution for encrypted (per MPPE) connection, I found a lot of information about patching the kernel etc. - so it definitly works after some work. But all these information is pretty old (2005-2006). Is it the same solution nowadays? I am not asking for a complete instruction (only if it's short) - I am more asking for a link to the right solution.

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• What could be causing LVM errors on first boot after install in Debian?

  - by ianfuture

  Hi, I've installed Debian (lenny) on a machine at home. It was set up during install to have a /boot partition, then the rest was encrypted, then had an LVM ontop of that, then all the other partitons inside LVM. After install completed and on first boot it asked for password to un-encrypt(same password for both drives) then it showed an error which said LVM could not find a physical device with a particular UUID or something similar. LVM install is over two HDs. One is 120GB and one 40GB. 120GB is Master on its IDE cable and this has /boot on it. 40GB is slave on the other IDE cable. Is there anything that could be done to rescue this install? Or diagnose problem? It took ages to get installed due to time spent enrypting drives and I'd rather not go through that again. :( Thanks.. Ian

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• asymetric encryption of directory

  - by ftiaronsem

  Hello alltogether Currently I am wondering whether it is possible to apply asymetric encryption of a directory in Linux. I would like to achieve the following: Write log files to /var/log/secret Everything written to /var/log/secret is instantly encrypted by a public RSA key (or something similar) The encryption programms I know, i.e. ecryptfs do not support asymetric encryption of files, at least as far as I know. (Correct me if I am wrong). Therefore I am asking here whether you know of any possibility to implement this. Thanks in advance

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• How to automount a Truecrypt volume before login in Windows 7?

  - by nonoitall

  I have an external hard drive containing all my documents, and it is encrypted with a password via Truecrypt. I'd like my desktop computer at home to automatically mount the volume prior to my logging in (so that it can be used as my user folder) without asking me for a password. (Yes, the password can be saved in plain text on my desktop's hard drive - that's okay.) For the life of me, I can't figure out a way to do this that actually works though. Tried using the Task Scheduler to schedule a mount when the computer starts up, and it works, but the volume is only accessible by my user account after I log in. (Haven't tried every combination of users/options for the scheduled task, so maybe there's something else there I need to try.) Also tried adding a startup script for my user account that runs on login, which evidently is too late to set up the user's profile folder. Anybody ever successfully achieve this or something like it?

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• Apache Key: Which is it using?

  - by quindraco

  I'm running an Apache server on Ubuntu. When I restart it, it asks me for a pass phrase; here's what the dialog looks like: Apache/2.2.16 mod_ssl/2.2.16 (Pass Phrase Dialog) Some of your private key files are encrypted for security reasons. In order to read them you have to provide the pass phrases. Server 127.0.0.1:443 (RSA) Enter pass phrase: I've already worked out how to remove the pass phrase from the key file in question, but I can't find any information anywhere on how to determine which key file Apache is complaining about in the above dialog. I have dozens of key files on the server in question, although I don't know which ones are in active use (all I did is 'locate .pem' and ignore the false positives). Does anyone know how to track down which pem file I need to remove the passphrase from?

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• What is your approach to draw a representation of your network ?

  - by Kartoch

  Hello, I'm looking to the community to see how people are drawing their networks, i.e. using symbols to represent complex topology. You can have hardware approach, where every hardware unit are represented. You can also have "entity" approach, where each "service" is shown. Both are interesting but it is difficult to have both on the same schema (but this is needed, especially using virtualization environment). Furthermore, it is difficult to have complex informations on such representation. For instance security parameters (encrypted link, need for authentication) or specific details (protocol type, ports, encapsulation). So my question is: where your are drawing a representation of your network, what is your approach ? Are you using methodology and/or specific softwares ? What is your recommendations for information to put (or not) ? How to deal with the complexity when the network becomes large and/or you want to put a lot of information on it ? Examples and links to good references will be appreciated.

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• What processes would make the selling of a hard drive that previously held sensitive data justifiable? [closed]

  - by user12583188

  Possible Duplicate: Securely erasing all data from a hard drive In my personal collection are an increasing number of relatively new drives, only put on the shelf due to upgrades; in the past I have never sold hard drives with used machines for fear of having the encrypted password databases that have been stored on them compromised, but as their numbers increase I find myself more tempted to do so (due to the $$$ I know they're worth on the used market). What tools then exist to make the recovery of data from said drives difficult to the extent that selling them could be justified? Another way of saying this would be: what tools/method exist for making the attempts at recovery of any data previously stored on a certain drive impractical? I assume that it is always possible to recover data from a drive that is in working order. I assume also there are some methods for preventing recovery of data due a program called dban, and one particular feature in macOSX that deals with permanently deleting data from a disk.

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• Encrypt two drives with Truecrypt with password before boot

  - by Deshroom

  i'm using laptop and PC with single HDD with full disk encryption. I know how works truecrypt on single drive because i use it everyday. My second laptop has 2 HHDs. My question is how to encrypt first 128GB SSD and second 1TB HDD in same way. I have multiple applications installed on second drive so i want to have it accessible during boot in ex. Steam in installed on second drive and it starts with windows. How to do it? can i encrypt two drives in truecrypt and unlock it via password before boot? My main reason is i want to RMA laptop without removing disks or data - my data need to be encrypted. Thank you.

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• Cloud storage services offering one-time download links? [closed]

  - by TARehman

  Is anyone aware of consumer-targeted cloud storage services that allow users to generate a one-time download link for hosted files? Case in point: I have an encrypted container with some documents I need to send to a vendor. I would prefer to give them a one-time download link, so that I know when they have accessed the file, and then inform them of the passphrase by phone. I have heard that MediaFire offers 1-time links, but that they are buried in tons of advertising. At the moment, I'm not sure that I consider MediaFire fully legitimate; I'm more interested in solutions with Google Drive, Box.net, DropBox, etc.

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• Store and Encrypt data over the internet.

  - by sotsec

  I am trying to build a system where I will be able to access my files remotely. I want to setup an external hard drive or a NAS that I will access over the internet, and I want every file that is stored on that system to be encrypted. Could you please suggest me what is the best way of doing that? Or if you have any knowledge, what is the best way to access your files remotely with maximum safety? but the same time the space that the files are allocated is protected against theft(encryption) etc. thank you

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• How can I enable encryption for SQLite3 in PHP5.3?

  - by meouw

  The php manual for SQLite3::open has this information: public bool SQLite3::open ( string $filename [, int $flags = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE [, string $encryption_key ]] ) Opens an SQLite 3 Database. If the build includes encryption, then it will attempt to use the key. I would like to use encrypted SQLite databases for a project I'm working on, but I can't find any information anywhere on how to build the SQLite module including encryption. Does anyone know how to do this? Perhaps it's so obvious no one has published any information or perhaps only commercial modules are available. I've noticed that the developers of SQLite offer a proprietary encryption extension. Is this the only way to go?

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• Remotely enter encryption key?

  - by Jason Swett

  This might be a really dumb question but here goes, anyway. I just bought a couple servers. I already installed Ubuntu with encrypted LVM on one and I'm planning on doing the same with the other. This means that every time I boot up each of these machines, I have to enter the passphrase. And I'll have to do this every morning because I'll power each machine off each night for security reasons. Here's the problem: I don't have monitors or keyboards for these servers. It seems to me I have two options: Somehow enter the passphrase remotely Buy a KVM switch I doubt #1 is an option but I want to make sure it's not before I buy a KVM. Is it possible to enter the passphrase remotely? AND is it a good idea?

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• What does the NTFS encryption protect against?

  - by Ray

  I have encrypted a folder from the (PropertiesAdvancedEncrypt contents to secure data). However when I change my user profile to another one which is also an administrator the folder seems to be accessible as if nothing happened. What exactly does this encryption protect against. I'm looking to encrypt folders that no other user, or another OS or even if the HDD were to be removed and plugged to another device will be accessible. My OS is Windows 7 Ultimate. Any suggestions?

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• How to know which protocol is used in data transfer and inspect that data?

  - by user37880

  I've a .net application for windows. This application transfers a lot of data to and from a particular server on a fix port no 8888. I tried 'Tcpview' but couldn't figure out anything useful. I only figured that it uses 'tcp' connection. Is there a way to know which protocol is used for data transfer (I think port no 8888 is not specific port so not helpful)? How exactly my machine makes connection to this server? Is it telnet/http etc or what? How can I inspect the actual data which is being transferred? If data is encrypted, is it possible to know encryption method on client side (without reverse engineering)? Thanks.

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