How is the sentry's password accessed？Why can't I visit my sentinel？
I've tested my sentinels are accessible from the command line.
I have changed the account password in the picture, which is not real. Just a sample.
Related
I'm currently trying to understand how credentials are processed and registered in all (well the most...) cases possible during authentication.
Now from what I understand, LSA retreives all authentication requests, and depending on the protocol used, it then deals with credentials.
Then, only CredSSP (= RDP right ?) and NTML protocols make that the password gets registered in SAM, and that forever (because they go through NetLogon). Is that right ?
For Kerberos, because credentials aren't carried by NetLogon, they also aren't stored in SAM. But ! Like any other credentials, they're registered in LSASS, which only carries credentials for an user during the time he is logged in a session. I'm not sure about this part, and if it is right, when does it then gets rid of the credentials for the user ? Simply at the end of the session ?
(Is there also a way to check which users are in LSASS memory and SAM without using mimkatz or similar ?)
If someone could light me up on this, would be awesome :)
Have a great day !
My secretary created a new instance in Amazon using their EC2 server but lost the .pem file. Doing research online I was able to go to the instance system settings/get system log and retrieve some type of password there. The instance system log shows something like this:
2019/04/15 12:15:19Z: Username: Username
2019/04/15 12:15:19Z: Password: <Password>
It is a very long code of random characters.
Is there any way I can use this to log in via remote desktop or is there a way to decrypt it? I tried several decryption methods online and they said this was not a valid "hash"...whatever this means. I am not a technical person so I need hopefully a response in layman terms.
It appears that you are connecting to a Windows instance. When a new Amazon EC2 Windows instance is launched, a program on the AMI (disk image) automatically generates a random Administrator password. This is done so that you can access the instance, but nobody else can.
To keep the password secret, the program encrypts the password with the keypair nominated when the instance was launched. The encrypted password is passed back to AWS via the console. That is the string of 'random characters' you saw.
To decrypt the password, you can use the Get Windows Password feature, which requires you to supply the nominated keypair. It will then decrypt the password, which can be used to login to the instance as Administrator.
Since you no longer have the keypair, you cannot decrypt the password and therefore cannot login to the server. This is good! This proves that security works, because you would not want other people to be able to login to the server.
So, can do you regain access?
Refer to the steps on: I need to reset the administrator password on a Windows Server instance in Amazon EC2
Basically, there are two methods:
If Systems Manager is enabled for the instance, you can run a "rescue" script
Otherwise, there is a series of scripts that assist with the process of:
Detaching the disk
Attaching it to another instance
Resetting a configuration on the disk
Reattaching the disk to the original instance
The second process is a bit like plugging a USB disk into another computer to change a file (except that EC2 disks are managed differently).
Looks like I forgot my backup password on authy for PC however, I can still access all my 2fa accounts on mobile authy for android. I want to know if it is possible to recover or reset my backup password to make it work on the computer again.
I did try to remove a 2fa account and set it up again from mobile authy but on pc, it still asks me to put the backup password to access it. please guide me what to do.
Authy developer evangelist here.
I'm afraid the backup password is used to encrypt your backups and is never saved anywhere by Authy. The password is needed to decrypt the backups and without it, you can't and there is no way to recover the password (if Authy had a copy of your password, we could access your codes).
To completely start again you will need to find where Authy Desktop saved your backups file and remove it. Then the app won't ask for the password to decrypt it. I don't know where that is though, as I'm on a Mac.
Is there any possible way to check if a SVN update needs authentication or not?
Scenario : I have written a ruby GUI app which updates SVN repositories (from a static path) in a scheduled manner. This executes as a windows service. Also have tortoisesvn installed.
In ruby when I execute
svn update local_path_to_repository --username user --password password in my script then it works fine as I am passing the username & password with the update command.
But, tortoisesvn saves the password (by caching password, using standard Windows cryptography services to encrypt the password on disk) when I checkout the repository for the first time so I don't necessarily need to pass the username and password every time. Thus I just have svn update local_path_to_repository in my script.
Issue: This works fine until I change my LDAP password. Once my LDAP password is changed all the repository fails to get updated as it is requesting for the new password but there is no user interface for passing the new password.
I need to build the username and password UI only when svn updates needs those credentials but not always. How do I achieve this?
Update : Reading from the SVN book. I Understood that:
The client checks whether the user specified any credentials as command-line options (--username and/or --password). If not, or if these options fail to authenticate successfully, then
The client looks up the server's hostname, port, and realm in the runtime auth/ area, to see if the user already has the appropriate credentials cached. If not, or if the cached credentials fail to authenticate, then
Finally, the client resorts to prompting the user (unless instructed not to do so via the --non-interactive option or its client-specific equivalents).
But I did not find a way to check if authentication is required.
Can anyone please help me!
So I finally found a work around by doing:
output = `svn update "#{repo_path}" --non-interactive 2>&1`
check_authentication = output.include?("Authentication failed")
if check_authentication returns true meaning authentication has failed then I build the GUI for entering the new password and send it to the user.
I work as a student web developer for my computer science department and I've been asked to look into a modification of our password reset procedure for linux accounts. Currently users will log in with their university credentials (via Active Directory) and after being authenticated they get a temporary password through email which they are forced to change as soon as they log in. This way eben if the temporary password it intercepted there is a very short time span in which it could even be used.
Now the idea has been posed that instead of using a temporary password that we might allow the user to pick a new permanent password and set it directly through the web utility. It is my understanding that https is more of "the best we have" than "a great way to secure information". Are there any other avenues I can explore for securing the new password so that we can feel comfortable implementing such a system?
Basically, if you communicate with a server over HTTPS and the private key of the server isn't exposed to someone else, you can be sure that anything you transfer (e.g. the new password) can only be decrypted by the server. Additionally the server certificate assures, that the server you are communicating with, really is the server you want to communicate with.
So, using HTTPS provides authentication and prevents eavesdropping.
If you are working with Active Directory, it is my understanding that the Password Modify Extended Operation (which requires the existing password) is not supported. Therefore, the password must be changed with the LDAP modify request. One solution would be to use the UnboundID LDAP SDK with a web application to execute the LDAP modify with the new password. The modify request should be transmitted over a secure connection, or a non-secure connection promoted to a secure connection using the StartTLS extended operation.
see also
AD password change
Using ldapmodify - this article is about the command line utility ldapmodify but the concepts are useful.