Security settings for Linux and operating system passwords

I ask a client why some of the password parameters are not defined at the Linux operating system level, and he says that the complexity and timeout settings for Linux and Windows differ internally. If you set the Linux password complexity and timeout, the Linux system may prompt for a password change before Windows AD does so. The Linux password's AND / OR complexity is different from Windows complexity, and the user changes their password to something that is valid in Linux but is not valid in Windows and therefore locks their account. Is that true? Can not you just set up OS and AD password settings in the same way (eg account lockout, inactive session timeout, complexity) to avoid this?

Passwords – Is it possible to specify the hash while cracking WordPress (phpass) hash?

I'm trying to crack a hash for an online WordPress CTF box.
The hash is a WordPress hash with the following format:

$P$BP.urIloNF7HNoSPN2lveguQHw97Wf.

I also have the salt from the wp-config file.
However, it seems that neither John nor Hashcat allow running with the salt.
Would you know how to run it with the salt?

Encryption – How are Mozilla Firefox passwords encrypted?

As far as I know, current versions of Mozilla Firefox Save the saved passwords (encrypted with 3DES) to the logins.json File in the meantime, the keys are stored in key4.db (or key3.db in older versions).

If you have not set up a master key The passwords can then be accessed using the key database file. In the database, I came across an entry that actually looks like the keys.

------------------------------
|    id    | item1 | item2   |
------------------------------
| password |  ...  |  ...    |
------------------------------

So, why is there two? 3DES Key in the database? Are they really encryption keys? How can I use it to decrypt it? logins.json Dates? Which coding option is used?

Passwords – How to Avoid Using System.String with Rfc2898DeriveBytes in C #

I'm creating a .NET Core web app in C # that picks up a user's password and has it grabbed to save it to a server. I use Rfc2898DeriveBytes together with a randomly generated salt. However, I've read that I should avoid using strings throughout the process because strings can not be removed from memory. I know .NET Core has one PasswordBox that holds the password as SecureString, but SecureStrings can not be converted to a byte array to pass to Rfc2898DeriveBytes& # 39; s constructor without much gimmick.

Since the webapp only runs on my server, I can easily convert it SecureString Back to a string as soon as it was transferred to my web application? If an attacker manages to access the server's memory to look for an undeleted string, I probably can not do very much to protect anything.

If I'm to go through with it SecureStringsWhat are the best practices for saving hashes?

Do not use Excel spreadsheets to store and share your server details and root passwords. | Be PCI compliant

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Ezeelogin Automations to manage and manage multiple Linux servers

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World's first automatic login for switch users (see below) That would improve security without remembering the passwords.

The world's first SSH user access control system Integrated with ssh gateway, which allows you to grant / deny ssh access to servers, improving security.

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Just search and ssh in your servers with the least time. Take a look at cool queries based on hostnames, IP addresses, descriptions, and more.

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between servers.

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Authentication – Is it safe to use Redis to store usernames and hashed passwords?

We take a look at using Redis for a cache aside pattern and I think it's safe to store usernames and hashed passwords in Redis Cache? If so, are there security issues with a key structure like user: username?

Or is it safer to read the database directly and store the refresh token instead in Redis for the first user name and password authentication / login?

Passwords – Is getpass.io a threat to secret graphics?

If you enter a secret keyword in Getpass, a small jdenticon based on the entered secret will be displayed on the right. The FAQ on Getpass states:

Did you notice that the secret keyword is hidden? If so, then this is one
Ability to visually display a hash of your secret keyword based on
jdenticon library. This will ensure that your keyword is secret
spelled correctly without revealing the actual letters you have
typed.

Is not that completely against the purpose of hidden fields in applications?

I've found that the generated symbol is based on a hash and is therefore irreversible. However, this still provides direct information about the password. Such information would be completely obscured if the artwork were not available.

For example, if I know the graphic of a terrible password, how & # 39; # 39 & password123;If I cross my colleague's shoulder while writing his password on this page, I would already say that his password is a password that it is not & # 39; # 39 & password123;, This would not happen if the artwork were not there.

Am I paranoid? Is that something that can be done safely?

Lock-screen passwords sometimes fail

I recently upgraded from Android 8.1 to 9.

Since the update, there is a problem that keeps coming up. No matter how many times I enter the password, it will not be accepted. And I'm sure the password is right.

The only way out is to restart the phone. Then my password will be recognized again, until the problems reappear after a few days.