Is there a way to catch the openssh key based authentication failure?
I am looking for an option, where some custom "error handling like alarms" to be raised whenever a ssh key based authentication fails for a certain user.
I know that the key based authentication is done by openssh, I wanted to know if there is any option, where in I can plug in my error handling/reporting code which will be called when the authentication fails.
Any pointers on how this can be done? Any way for this failure to caught by some application process?
No. OpenSSH does not support any way to plug your error handling. But the failed login attempts are recorded in error log or in audit (on RHEL/Fedora), where you can simply differentiate the user, authentication type and react accordingly.
This is very similar as the way fail2ban does it (it reads error logs). But I don't know what are you trying to achieve. Failed publickey authentication is quite common (most of the clients are sending public keys tests to all servers they are trying to access and therefore you can see a lot of these events).
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I am extremely new to UiPath. I have inherited a project from an experienced UiPath developer. I am trying to find the username and password he uses to login to a specific app. Because the project is not working when executing in the development environment, it is possible the password has expired. I am on the machine he used to develop the project, but logged in under my name. I have found the process that does the "Get Credential". I am using a message box to show the username at this point. When I run the process The "Get Credential" activity returns the error "you are not authenticated Error Code:0" I have researched the error and found several answers as to why it is happening, but not what to do to either fix my problem or get around the problem. The UiPath.systems.Activites version used is 21.4.1. I am aware of the concept of the CredentialStores, but can't seem to find the one used for this project. Where would I find the name of the credential store used? How do I find the username? I need to test the change I made for a user request.
I am going to close this question as I have determined the correct password for what I needed to do. I have no need to get into the credential stores for a password.
Credential stores and password were not the actual issue with the error I was receiving. The error "Loading asset PreAuth_Citrix_FolderName failed:
You are not authenticated! Error code: 0" by referencing the word authenticated, I assumed it had to do with passwords. As I did more research I found the issue to be the new security certificate installed on our web server. While orchestrator recognized the new cert, the Identity Server was not updated with the new thumbprint. I found the information I need at this link https://forum.uipath.com/t/get-asset-you-are-not-authenticated-error-code-0/343910. Once I updated the Identity Server thumbprint, I no longer received the error and my jobs ran. (not successful, but at least they ran past this error!)
We are using a custom database data store in OpenAM. This store authenticates user against our Oracle database.
Now, there are many possible causes why that authentication might fail. The account could be locked in Oracle or the password might be expired.
The datastore catches the SQLException, but how do I propagate the cause to the OpenAM UI?
I can throw a AuthLoginException from authenticate(), but on its way to the AMLoginContext, it gets wrapped and AMLoginContext kind of ignores error codes of AuthLoginExceptionS anyway. Meaning: AMLoginContext doesn't read the error code from the exception but tries to determine the error code itself, and usually it just puts AMAuthErrorCode.AUTH_LOGIN_FAILED into the login state.
How do I get the UI to show the cause of the login problem?
As Bernhard says, that is not recommended. However, from your data store you could obtain a Debug instance (com.sun.identity.shared.debug.Debug) and you can log exceptions, and they will appear in [AM_INSTALL_DIR]/openam/debug.
edit: You can find examples of doing so throughout the OpenAM source code.
We have a web-app which uses federated authentication to authenticate users. Data for the Fed Auth are obtained from the Active Directory service.
One of the system's requirements is to have a "Last log in date" saved in the web-app, but the application is not performing any log in operation. It just checks if the incoming request if allowed to perform requested operation, based on the AD credentials.
Have you ever encountered such a requirement in a similar scenario? What was your approach to the problem? We thought about creating user session on the first request and treat the session creation point as the log in date. This seemed as a bad idea, as we don't want to use user-session at all, and it would be the only scenario utilizing it.
Another approach we were thinking about was to use client to tell us if he is logging in or not, for example by making a special "mock" request, which on the web-app would be treated as the log in. This also seems bad, because in that case we have to trust the client to be telling the truth, which basically looks like a major vulnerability.
I am aware that this requirement makes little sense in such environment, but that is something I can't argue with right now, that's why I am trying to find most reasonable solution to that situation.
Thanks for all the suggestions in advance.
Persona's quick setup guide says that I need to verify the assertion from the server:
It’s extremely important that you verify the assertion on your server, and not in JavaScript running on the user’s browser, since that would be easy to forge.
Although I have already implemented it, why do I need to do it on the server? I anyway need to send the assertion to Persona's own server here: https://verifier.login.persona.org/verify
I just want to know what are the security issues if I send the assertion directly from the browser?
What can be spoofed using the browser, and why can't the same data be spoofed when sending it over my own server?
Thanks!
The problem isn't so much that you're sending the assertion directly from the browser to the verification service, but rather about what happens right after that.
If the server is the one performing the verification (by sending it to verifier.login.persona.org) then it knows that the assertion is valid because it checked itself. A hostile user cannot intercept and tamper with the communication between the server and the verification service. So the server can create a session for the user and set a cookie. That's all good.
On the other hand, if the client is doing the verification, then how is the session created? Perhaps the client code checks that the assertion is valid and then calls /create_session on the server? The problem here is that the server needs to trust that when the client asks for a session to be created, it has actually done the check.
Client code running in a user's browser cannot be trusted because it can easily be changed (e.g. using the developer tools) by users. So while you're sending me JavaScript code that properly checks assertions, I could modify that check to skip the assertion check and just lie to your server when asking for a new session to be created.
I configured my Jenkins server to only use HTTPS and enabled security.
As well I don't like anybody who's not logged on to see the Dashboard (even if it would be empty). Here for I disabled the 'read' access for 'anonymous'.
So far all this works exactly to my likings :)
But wanting to add some build notification functionality to remote clients by e.g. using something like 'CCtray' I run into trouble. The access to the https://<SERVER>/cc.xml now only works for logged in users.
Where I would have liked to be able to get those notifications for 'anonymous'.
Probably combining these wishes is kind of contradictory - I suppose?
Maybe someone has a better idea which could match my likings?
Possibly any other notification tool which can be used???
For the Mercurial hook triggering the sw-builds I can use a construction like
curl --cacert <CERTIFICATE> https://<USER>:<PASSWORD>#<SERVER>/job/MyPROJECT/build?delay=0sec
But a similar approach for the URL in CCtray doesn't seem to work.
I've just started using the cctray Jenkins transport extension. Early days, but it seems to work as advertised and is connecting to our secure server perfectly happily.
Currently, the only significant limitation seems to be that if your password expires there's no way to re-enter your credentials.
For Jenkins servers without anonymous access, you can use Catlight build notification tool. You can provide access token or username/password to authenticate to your server.
I you have a self-signed ssl certificate, make sure that you add it to trusted by OS. That way, most applications will recognize it and connect to server without warnings.
Adding to #MrBlueSky 's answer, you can avoid the password expiration hassle; simply use a Jenkins-issued API Token instead of your password.
Log into Jenkins
Click your username (in the upper right corner)
Click Configure (in the left navbar)
Click Show API Token
Use this token in place of your password when setting up the Jenkins Transport settings