Ubuntu :: Use Passwords And Encryption Keys For Remote SSH?
May 1, 2011
I just recently upgraded from 10.10 to 11.04, but using the classic desktop instead of unity, mainly because unity sucks big time, but that's a different story, anyway, when I used 10.10 I had a key setup for access to my remote SSH server, but now when I try to set up a new key using passwords and encryption, I get:- "Couldn't configure secure shell keys on remote computer", followed by:- '** (process:2532):WARNING **:couldn't open fd 27:Bad file desciptor' 3 lines of this with different process numbers then I got ''** (process:2535):WARNING **:couldn't open fd 27:Bad file descriptor: Permission Denied. Please try again'
I have not changed anything on the remote server at all. I can access SSH using PuTTy sucessfuly, but I want to set up a key using the ubuntu passwords and encryption key program, but since ugrading to 11.04 I can not do that for some reason.
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Oct 19, 2010
I have a lot of passwords and keys for FTP and SSH connections that I need to keep. When using the "Passwords and Encryption Keys" the Export menu is sensitive/disabled.
I need to back them up, amongst other things, as I'll be re-partitioning my hard drive which will most likely result in a fresh install of Ubuntu.
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Jun 7, 2011
I am not very security minded...I'm aware of it, and always made sure I had up-to-date overall protection in Windows but firewalls, and the blasted passwords are largely a thorn in my side!When I got my iPhone last year I suddenly discovered password managers & "wallets" to keep all that kind of information in and syncable across different devices. My life got so much easier. Of course now I need to figure out encryption keys, and how they work (I'm clueless). I also need to find a program or system that I can move my existing low-tech info (mailnly user name & passwords) that will also accomodate the increased needs of Ubuntu security and still be sync-able. I started a little research weeks ago, but my current "wallet" only exports .csv so I quit since I'm going to have to do a lot of data entry whatever I go with.So here goes:
1) what is the difference (bare bones) between using an encryption key (e.k.) vs. a standard user created password? what situations are better suited for e.k.?
2) I have seahorse (default intall with Ubuntu I guess) but the only thing in it is Login under passwords which leads to a login keyring (?) and a drop-down list of about 6-10 of the gazillon passwords I use daily. The other tabs are for keys which I don't have any concept of.
3) I know FF also "remembers" user id & passwords as you choose to have it do so. Is that information transferable into seahorse or another program?
4)I'm also (today) getting ready to really set up my system for user names & security across my little home network. How can I integrate that into whichever program/app I go with to store my pwds and keys?
5)give me links to fairly current documentation on this stuff?
6) Any program/app recommendations.Pros/cons uses, what they can & can't do or be used for, etc.
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Mar 11, 2011
Is it possible to have two passwords associated with one account, one that is the actual one, and another one, a duress password, that upon entering gives a similar (desktop) environment with "decoy data"?
The idea is to have the bogus password go to an encrypted home drive that looks as if it were the real deal, but it is wiping particular sensitive (encrypted) data that is visible only with the real password in the background, so that the actual data that need to be protected are not compromised. While the person who unlocked the computer tries to find the information on it between all the rubbish files, the real files are securely wiped. The files are very sensitive in nature, so it's better to have then destroyed than have unauthorized people access them, in the event of that happening.
I happen to know that TrueCrypt has a similar option but that requires an entire decoy operating system (and I think that might be a bit conspicuous), but is there a native linux way to do it?
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Nov 26, 2009
I am just wondering what encryption method the shadow file uses, so that I may be able to manually change it. I ask this because I am trying to make a web page that will allow people to change their linux password via a browser.
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Mar 10, 2010
I would like to be able to store all my important details and passwords in such a way that it is encrypted, easy to get the information out and is cross-platform. Basically, I am thinking that if I kick the bucket that I would like to make it as easy as possible for others to be able to access this information using a pre-arranged password.
Ideally I would like the files to contain the program that is needed to extract the data i.e. importantinfoLinux.sh inportantinfoWin.exe (Just like a self-containing zip). I haven't found anything along those lines.
The things I am currently thinking of is:
1) A password database program that is cross-platform like KeePass. WIth the bundle contining the relevant installers for win, linux and OS X and the database file.
2) An AES encrypted zip of the data with relevant programs to open it e.g. 7-zip on windows, peazip on linux and OS X
Has anyone got any thoughts on this? Any self-containing java encryption apps?
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Jun 20, 2010
I'd like to know if there's a simple way to create a LUKS encryption drive with different passwords? A real one that leads to one set of data, and another that leads to a whole different set of data. Is this even possible with LUKS?
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Nov 4, 2009
I'm looking to find out exactly how to go about changing the encryption method of shadow passwords from MD5 to something a bit stronger, like SHA. I've been looking around for a bit now and haven't found out how to do it. I've gathered that I'll most likely need to change the /etc/pam.d/system-auth file. Right now, there is a line that looks like this:
password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok.I'm guessing the md5 should be changed to something else, like sha256. What else? I know I'll need to reset all passwords once the change is made, but I thought there was someplace else that controls how the passwd command encrypts passwords.
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Oct 4, 2009
i am wanting to put a list of common passwords on a usb stick, but i want the file to be password protected. I also need to be able to access it from more than one computer (all linux, maybe a mac too).
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May 11, 2011
How to disabling Encryption keys ?(ubuntu 10.10)
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Aug 1, 2011
I have been using so far only 32bit ubuntu, but now for various reasons I have to change to 64bit I need to compile a lib for gpg encryption for handling old keys, namely .I have the idea.c file and had some instruction with which I was able to create the lib from it for the 32bit linux. The intruction was:
gcc -Wall -02 -shared -fPIC -o idea idea.c
this seems not to work under 64bit and the old lib does not work under 64bit either obviously. particularly the compiler tells me -02 option is unknown, does it matter? or what is -02 ?
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Apr 25, 2010
Is it possible to have multiple passwords on the same account, where one password allows only normal login and another only when accessing the machine remotely (for example, via ssh)?
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Oct 22, 2010
I know this has probably been asked too many times here but I need to secure my emails. Personal matters of course. But yeah. I use the program "Password and Encryption Keys" to generate a key to sign my emails with but I do not know what to do. To be blunt, I'm stupid when it comes to this. IF not, steps in creating a key? and giving it (my public key) to the significant other? Finding where both keys are? Implementing it into Thunderbird? If it helps any here's some extra information: Ubuntu distro: Ubuntu 10.04 Email client: Thunderbird
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Jul 28, 2009
I have currently a file server that runs on Fedora 9, and all other PCs (mostly running Windows XP) access the file server via SAMBA. Everything works perfectly! However, lately a home invasion in my neighborhood got me thinking. If they take my file server, my data is not protected. So, I would like to implement the LUKS partition encryption (/home) which sits on a separate disk. However, I don't quite like the decryption process at boot time. In other words, I would like to wake up the file server (WOL) remotely, and when it's done booting, I would like to log-in using the other PCs and enter the passphrase remotely to decrypt /home. Is this possible using LUKS encryption (i.e., cryptsetup)? If not, what would be another alternative to what I am trying to do using a secure encryption (so that the data is safe from thieves)?
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Oct 11, 2010
I have updated to 10.10 and now my ir remote is simulating keyboard arrow keys which is causing problems in applications like Boxee. The weird thing is if I stop lircd it still simulates the keyboard arrow keys.
Does anyone know how to stop the keyboard arrow keys from triggering when the ir remote up, down, left or right buttons are pressed?
(Here are all the IR config files)
hardware.conf
Code:
# /etc/lirc/hardware.conf
#
#Chosen Remote Control
REMOTE="Streamzap PC Remote"
REMOTE_MODULES="lirc_dev streamzap"
[Code]....
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Jan 7, 2010
I wonder if it is possible to have two passwords for one user account in 9.10. I have a long login password (5 words about 45 characters with spaces caps). I would like to set a shorter password for Authentication, sudo, etc. While retaining the original for logging in.In short:Have long password to login to computer.Have short password for everything after login.
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Jun 27, 2011
Just wondering if Ubuntu has an Accessibility equivalent for sticky keys and mouse keys.
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Apr 17, 2010
I don't know if this is a configuration issue or a hardware issue, but I have a Kinesis Advantage USB keyboard and for some reason the F3-F5 keys aren't responding as they used to. They don't respond to anything and, when I tried using F5 on Emacs, it said <XF86AudioNext> is undefined, so I guess it's a weird mapping problem.
Any idea how I could remap them to the original meaning?
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Apr 7, 2011
I'm running Debian (Squeeze) and I have a toshiba portege m700. It has five buttons on the front just under the screen, which are the only ones accessible when you flip the screen over into tablet mode. One of them is for rotating the screen, and another is for switching to external display. I want to remap the remaining three to control, alt and super so that I can use shortcuts with the stylusThe problem is, when I used showkey to find out the key codes, I found out that each button generates more than one key code:Button 1:
key 126 press >> super_r, although this is distinct from the actual super key (125)
key 7 press >> 6
key 7 release
key 126 release
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Dec 23, 2010
I am building an active directory and using BIND9 as my DNS. To allow for secure dynamic updates from the domain, I am enabling GSS-TSIG as detailed here and here. Unfortunately, some of the commands and configurations used here seem to be depreciated, at least in the newer versions that I'm using. My issue is one of keytab encryption. I generated a keytab using ktpass.exe on the Windows Server 2008 domain controller. I have tried DES/MD5, AES128/SHA1 and AES256/SHA1, each have been turned down by ktutil on the kerberos server (FreeBSD). Each time, it outputs the following error: ktutil: AES256/SHA1*: encryption type AES256/SHA1* not supported *Respective to encryption used.
I cannot find a list of suitable encryption schemes that ktutil will accept. The FreeBSD handbook details a means of producing a keytab file, but I'm not sure how to configure the Domain Controller to use the keytab.
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Oct 17, 2010
Canon cameras used to come with a piece of software called remote capture for Windows and MacOS.
You plug in the camera via USB, and then the camera display is on your monitor. From there you can do everything your camera does, like taking pictures of video. Does anyone know if there is linux equivalent software that can do this?
I have found this software, but new cameras aren't supported.
[url]
I'm trying to make a stop motion movie.
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Feb 6, 2011
I maintain plain vanilla Ubuntu 10.04 systems for several friends. Each machine has only one user, the owner. I use Remote Desktop to instruct and to perform maintenance. Here's my problem:After updating the system, if the kernel has changed, a restart is needed. If I do a restart, I then have to phone the owner to insert his login credentials in the gdm login screen, before I can do anything else via Remote Desktop on that machine.There ought to be a simple way I can avoid the phone call and login myself.
I'd strongly prefer not to use any software that is not included in a plain vanilla Ubuntu 10.04 installation. And I don't want to weaken system security beyond what it is now.Is there a solution? Or, what is the simplest solution?
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Mar 2, 2010
I am trying to set up Ubuntu like I had on my windows PC. I have my account, my wifes account and my kids account. I want passwords set for both myself and my wife but I don't want the kids to be required to have a password to log in. When setting up Ubuntu, it looks like it was all or none. I have dabbled with Linux off and on for years and am sure there is a way to set this up but I have no idea how.
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Jun 27, 2010
Just did a clean, fully updated install of Lucid. Unlike the development version I was running, Firefox now will not remember usernames or passwords for sites. I have "Remember passwords for sites" under Preferences checked.
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Nov 9, 2010
How Do I reset passwords in Ubuntu 10.10?
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Sep 15, 2010
We're using both SuSe and RHEL servers. Our servers are running behind firewall device and remote root login is disabled in SSH.
We're using NAT.
Remote client connections including failed logins are logged into the /var/log/messages but what is logged are gateway ip of our LAN - the LAN IP of Firewall device.
How can I logged the external or public IP of the remote client?
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May 10, 2010
I've just installed 10.04 x64 and I've had some problems with samba (cifs/windows file sharing). It seems like samba is forgetting user passwords, so on every reboot I have to add a password for the user that needs access: sudo smbpasswd -a tietze
I've tried restarting samba (sudo service sbmd restart), but it does not work. I have to add a new password for the user with the command above.
I tried to google a bit for a solution, but only found the following thread with a problem that seems related: [other] Samba forgets user
making samba remember passwords betweeen reboots/shutdowns?
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Jun 12, 2010
this is just weird. Did a fresh install from the alternate CD, including deleting original Win XP partition. Installation went just fine. Building this for my wife, so when asked for user name and password, entered those for her. As required, enteressword, then re-entered for verification. When setup completed, I tried to login, but absolutely could not. System recognizes the keyboard, responds to enter key, enters dots in the PW box as I'm typing but only returns Authentication Failed.
Thinking I must have mistyped the PW both times, I reinstalled. This time, I created my user name and password; the one my hand muscles know so I don't even have to think about it. Get to the end, reboot and, I can't log in!Does anybody have any idea what's going on here? I'd truly love to find out; my wife is getting restless
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Aug 17, 2010
I used to have ettercap on backtrack 4 and everything was ok...But on ubuntu 10.04 I'm having this issue; it is not showing passwords (if i log in for example in a forum with a http link )and not sending false certificate (if i try to log in in https links, after uncommenting the redir ip tables in etter.conf).Other features seems to work alright (such as dns spoofing) and the arp poisonning is succesful. Besides, Wireshark gets the passwords.
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Sep 29, 2010
I am unable to get group passwords to work at all in 10.4. I set the password for the group and try to `newgrp` in to it, the prompt asks for the password, but always gives me permission denied (even though its set to allow this..": x :"). Is this just not fully supported?
Next, after using `sudo gpasswd -A usr grp`, the user becomes an admin of the group, he can add/remove users only for that grp, but is not a "member". How would I find out who are admins of groups? I have tried `groups`, looking in /etc/group and theres nothing, the user does't even look like hes associated with the group at all.
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